Built 2026-10-16 (16 October 2026)

Williston Sloulin Fld Weather Records (USW00094014)

Record envelope, standing records and threshold days for Williston Sloulin Fld (USW00094014), North Dakota, United States, with 126 years of record.

Key Facts for Williston Sloulin Fld

  • Williston Sloulin Fld (USW00094014) is a weather station in North Dakota, United States at 48.17 latitude and -103.64 longitude, 580 m (1,902 ft) above sea level.
  • The station reports from 1894 to 2019, 126 years of record.
  • 1,464 records set at Williston Sloulin Fld still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Williston Sloulin Fld set a daily record high minimum temperature of 3.3 C (37.9 F) on 18 November 2019.

About the Station

  • Location: North Dakota, United States, 48.17 latitude, -103.64 longitude.
  • Elevation: 580 m (1,902 ft).
  • Period of record: 1894 to 2019, 126 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Williston Sloulin Fld, with 2026 drawn through them The band shows the record high and record low for each calendar day at Williston Sloulin Fld. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Williston Sloulin Fld. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Williston Sloulin Fld, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.4 C (57.9 F)-41.1 C (-42.0 F)n/an/a
Feb18.9 C (66.0 F)-45.6 C (-50.1 F)n/an/a
Mar28.9 C (84.0 F)-37.2 C (-35.0 F)n/an/a
Apr33.3 C (91.9 F)-26.1 C (-15.0 F)n/an/a
May41.1 C (106.0 F)-12.2 C (10.0 F)n/an/a
Jun42.2 C (108.0 F)-3.3 C (26.1 F)n/an/a
Jul43.3 C (109.9 F)1.1 C (34.0 F)n/an/a
Aug42.2 C (108.0 F)0.0 C (32.0 F)n/an/a
Sep40.0 C (104.0 F)-10.6 C (12.9 F)n/an/a
Oct33.9 C (93.0 F)-22.8 C (-9.0 F)n/an/a
Nov24.4 C (75.9 F)-32.8 C (-27.0 F)n/an/a
Dec17.2 C (63.0 F)-45.6 C (-50.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Williston Sloulin Fld by the year they were set 1,464 records at Williston Sloulin Fld still stand. 1936 holds the most, with 45. 02040601894: 61895: 101896: 171897: 171898: 181899: 181900: 271901: 231902: 101903: 121904: 41906: 61907: 311908: 141909: 211910: 291911: 161912: 171913: 61914: 131915: 171916: 161917: 201918: 171919: 331920: 81921: 91922: 61923: 101924: 151925: 121926: 81927: 121928: 111929: 121930: 181931: 181932: 51933: 91934: 191935: 151936: 451937: 141938: 31939: 221940: 81941: 131942: 91943: 111944: 91945: 101946: 81947: 101948: 81949: 111950: 121951: 121952: 71953: 61954: 171955: 71956: 131957: 111958: 161959: 111960: 71961: 61962: 121963: 161964: 101965: 81966: 61967: 91968: 101969: 151970: 21971: 41972: 131973: 31974: 51975: 41976: 41977: 161978: 51979: 61980: 191981: 161982: 51983: 221984: 111985: 131986: 61987: 81988: 241989: 81990: 91991: 171992: 191993: 101994: 51995: 61996: 101997: 81998: 101999: 112000: 102001: 72002: 152003: 232004: 102005: 102006: 82007: 52008: 62009: 62010: 52011: 12012: 162013: 42014: 62015: 112016: 42017: 82018: 82019: 51894190819211934194719601973198619992012
1,464 records at Williston Sloulin Fld still stand. 1936 holds the most, with 45.
Standing records at Williston Sloulin Fld by the year they were set
Year setStanding records
18946
189510
189617
189717
189818
189918
190027
190123
190210
190312
19044
19066
190731
190814
190921
191029
191116
191217
19136
191413
191517
191616
191720
191817
191933
19208
19219
19226
192310
192415
192512
19268
192712
192811
192912
193018
193118
19325
19339
193419
193515
193645
193714
19383
193922
19408
194113
19429
194311
19449
194510
19468
194710
19488
194911
195012
195112
19527
19536
195417
19557
195613
195711
195816
195911
19607
19616
196212
196316
196410
19658
19666
19679
196810
196915
19702
19714
197213
19733
19745
19754
19764
197716
19785
19796
198019
198116
19825
198322
198411
198513
19866
19878
198824
19898
19909
199117
199219
199310
19945
19956
199610
19978
199810
199911
200010
20017
200215
200323
200410
200510
20068
20075
20086
20096
20105
20111
201216
20134
20146
201511
20164
20178
20188
20195

All-Time Record Progression

12 new records
When Williston Sloulin Fld set new all-time records 12 all-time records were set at Williston Sloulin Fld between 16 June 1931 and 31 January 2004. Each dot is a new record. Record high maximum temperatureRecord daily precipitationRecord snow depthRecord low minimum temperatureRecord high minimum temperatureRecord daily snowfall16 June 1931: Record high maximum temperature 42.2 C (108.0 F)9 June 1932: Record daily precipitation 77.5 mm (3.1 in)31 December 1933: Record snow depth 48.3 cm (19.0 in)16 February 1936: Record low minimum temperature -45.6 C (-50.1 F)5 July 1936: Record high maximum temperature 43.3 C (109.9 F)6 July 1936: Record high minimum temperature 25.6 C (78.1 F)10 July 1963: Record daily precipitation 125.2 mm (4.9 in)28 March 1975: Record snow depth 50.8 cm (20.0 in)29 March 1975: Record snow depth 55.9 cm (22.0 in)12 May 1983: Record daily snowfall 30.0 cm (11.8 in)13 April 1986: Record daily snowfall 38.1 cm (15.0 in)31 January 2004: Record snow depth 61.0 cm (24.0 in)1940195019601970198019902000
12 all-time records were set at Williston Sloulin Fld between 16 June 1931 and 31 January 2004. Each dot is a new record.
When Williston Sloulin Fld set new all-time records
DateKindDetail
1931-06-16Record high maximum temperatureRecord high maximum temperature 42.2 C (108.0 F)
1932-06-09Record daily precipitationRecord daily precipitation 77.5 mm (3.1 in)
1933-12-31Record snow depthRecord snow depth 48.3 cm (19.0 in)
1936-02-16Record low minimum temperatureRecord low minimum temperature -45.6 C (-50.1 F)
1936-07-05Record high maximum temperatureRecord high maximum temperature 43.3 C (109.9 F)
1936-07-06Record high minimum temperatureRecord high minimum temperature 25.6 C (78.1 F)
1963-07-10Record daily precipitationRecord daily precipitation 125.2 mm (4.9 in)
1975-03-28Record snow depthRecord snow depth 50.8 cm (20.0 in)
1975-03-29Record snow depthRecord snow depth 55.9 cm (22.0 in)
1983-05-12Record daily snowfallRecord daily snowfall 30.0 cm (11.8 in)
1986-04-13Record daily snowfallRecord daily snowfall 38.1 cm (15.0 in)
2004-01-31Record snow depthRecord snow depth 61.0 cm (24.0 in)

Wettest Day of Each Month

Jul: 125.2 mm (4.9 in)
Record daily precipitation for each month at Williston Sloulin Fld The wettest day on record for each calendar month at Williston Sloulin Fld. The most was 125.2 mm (4.9 in) on 10 July 1963. 050100150 Jan: 15.7 mm (0.6 in), 16 January 1995 Jan Feb: 17.8 mm (0.7 in), 22 February 1961 Feb Mar: 35.3 mm (1.4 in), 17 March 2003 Mar Apr: 55.9 mm (2.2 in), 18 April 2006 Apr May: 43.9 mm (1.7 in), 9 May 1953 May Jun: 77.5 mm (3.1 in), 9 June 1932 Jun Jul: 125.2 mm (4.9 in), 10 July 1963 Jul Aug: 77.2 mm (3.0 in), 21 August 1993 Aug Sep: 58.9 mm (2.3 in), 7 September 2019 Sep Oct: 46.2 mm (1.8 in), 2 October 1971 Oct Nov: 50.3 mm (2.0 in), 1 November 2000 Nov Dec: 23.4 mm (0.9 in), 13 December 2008 Dec
The wettest day on record for each calendar month at Williston Sloulin Fld. The most was 125.2 mm (4.9 in) on 10 July 1963.
Record daily precipitation for each month at Williston Sloulin Fld
MonthRecord daily precipitation (mm)Date
Jan15.7 mm (0.6 in)16 January 1995
Feb17.8 mm (0.7 in)22 February 1961
Mar35.3 mm (1.4 in)17 March 2003
Apr55.9 mm (2.2 in)18 April 2006
May43.9 mm (1.7 in)9 May 1953
Jun77.5 mm (3.1 in)9 June 1932
Jul125.2 mm (4.9 in)10 July 1963
Aug77.2 mm (3.0 in)21 August 1993
Sep58.9 mm (2.3 in)7 September 2019
Oct46.2 mm (1.8 in)2 October 1971
Nov50.3 mm (2.0 in)1 November 2000
Dec23.4 mm (0.9 in)13 December 2008

Period of Record Coverage

1894 to 2019
Days with data per year at Williston Sloulin Fld 125 years of record at Williston Sloulin Fld, 1894 to 2019. 2 years have data for under 90 percent of days and are left out of rankings: 1904, 1906. 1894: 352 of 365 days1895: 350 of 365 days1896: 358 of 366 days1897: 360 of 365 days1898: 363 of 365 days1899: 363 of 365 days1900: 361 of 365 days1901: 362 of 365 days1902: 364 of 365 days1903: 365 of 365 days1904: 190 of 366 days1906: 195 of 365 days1907: 364 of 365 days1908: 365 of 366 days1909: 365 of 365 days1910: 362 of 365 days1911: 362 of 365 days1912: 366 of 366 days1913: 364 of 365 days1914: 365 of 365 days1915: 365 of 365 days1916: 364 of 366 days1917: 363 of 365 days1918: 365 of 365 days1919: 365 of 365 days1920: 366 of 366 days1921: 365 of 365 days1922: 365 of 365 days1923: 365 of 365 days1924: 365 of 366 days1925: 363 of 365 days1926: 365 of 365 days1927: 365 of 365 days1928: 366 of 366 days1929: 363 of 365 days1930: 363 of 365 days1931: 364 of 365 days1932: 366 of 366 days1933: 365 of 365 days1934: 364 of 365 days1935: 364 of 365 days1936: 365 of 366 days1937: 364 of 365 days1938: 365 of 365 days1939: 365 of 365 days1940: 366 of 366 days1941: 364 of 365 days1942: 365 of 365 days1943: 365 of 365 days1944: 366 of 366 days1945: 365 of 365 days1946: 364 of 365 days1947: 363 of 365 days1948: 366 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 364 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 364 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 364 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 365 of 366 days2017: 364 of 365 days2018: 365 of 365 days2019: 340 of 365 days190019201940196019802000
125 years of record at Williston Sloulin Fld, 1894 to 2019. 2 years have data for under 90 percent of days and are left out of rankings: 1904, 1906.
Days with data per year at Williston Sloulin Fld
YearDays with dataShare of yearComplete
189435296%Yes
189535096%Yes
189635898%Yes
189736099%Yes
189836399%Yes
189936399%Yes
190036199%Yes
190136299%Yes
1902364100%Yes
1903365100%Yes
190419052%No
190619553%No
1907364100%Yes
1908365100%Yes
1909365100%Yes
191036299%Yes
191136299%Yes
1912366100%Yes
1913364100%Yes
1914365100%Yes
1915365100%Yes
191636499%Yes
191736399%Yes
1918365100%Yes
1919365100%Yes
1920366100%Yes
1921365100%Yes
1922365100%Yes
1923365100%Yes
1924365100%Yes
192536399%Yes
1926365100%Yes
1927365100%Yes
1928366100%Yes
192936399%Yes
193036399%Yes
1931364100%Yes
1932366100%Yes
1933365100%Yes
1934364100%Yes
1935364100%Yes
1936365100%Yes
1937364100%Yes
1938365100%Yes
1939365100%Yes
1940366100%Yes
1941364100%Yes
1942365100%Yes
1943365100%Yes
1944366100%Yes
1945365100%Yes
1946364100%Yes
194736399%Yes
1948366100%Yes
1949365100%Yes
1950365100%Yes
1951365100%Yes
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967364100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974364100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982364100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997364100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016365100%Yes
2017364100%Yes
2018365100%Yes
201934093%Yes

Latest Records

20
Latest records at Williston Sloulin Fld
DateStationRecordValueBeat old record byOld record stoodSignificance
18 November 2019Williston Sloulin Fld, USdaily high min3.3 C (37.9 F)1.6 C (2.9 F)36 years22 of 100 (Routine)
20 September 2019Williston Sloulin Fld, USdaily high min13.9 C (57.0 F)2.2 C (4.0 F)96 years43 of 100 (Notable)
12 September 2019Williston Sloulin Fld, USdaily rain33.8 mm (1.3 in)11.7 mm (0.5 in)40 years40 of 100 (Notable)
11 September 2019Williston Sloulin Fld, USdaily rain24.9 mm (1.0 in)1.5 mm (0.06 in)38 years20 of 100 (Routine)
7 September 2019Williston Sloulin Fld, USmonthly rain58.9 mm (2.3 in)13.7 mm (0.5 in)4 years42 of 100 (Notable)
24 August 2019Williston Sloulin Fld, USdaily high min (Tie)18.9 C (66.0 F)tie34 years5 of 100 (Routine)
3 August 2019Williston Sloulin Fld, USdaily high min (Tie)21.1 C (70.0 F)tie60 years7 of 100 (Routine)
9 July 2019Williston Sloulin Fld, USdaily rain79.2 mm (3.1 in)43.4 mm (1.7 in)0 years50 of 100 (Notable)
3 June 2019Williston Sloulin Fld, USdaily high max (Tie)33.9 C (93.0 F)tie30 years4 of 100 (Routine)
2 March 2019Williston Sloulin Fld, USdaily low max-20.5 C (-4.9 F)1.6 C (2.9 F)114 years41 of 100 (Notable)
8 February 2019Williston Sloulin Fld, USdaily low min-41.6 C (-42.9 F)1.0 C (1.8 F)119 years41 of 100 (Notable)
3 February 2019Williston Sloulin Fld, USdaily rain16.5 mm (0.6 in)12.7 mm (0.5 in)4 years20 of 100 (Routine)
18 January 2019Williston Sloulin Fld, USdaily rain6.1 mm (0.24 in)2.0 mm (0.08 in)3 years19 of 100 (Routine)
4 January 2019Williston Sloulin Fld, USdaily high min-2.1 C (28.2 F)0.1 C (0.2 F)16 years15 of 100 (Routine)
26 December 2018Williston Sloulin Fld, USdaily rain9.9 mm (0.39 in)1.8 mm (0.07 in)29 years20 of 100 (Routine)
21 December 2018Williston Sloulin Fld, USdaily high min-1.6 C (29.1 F)0.6 C (1.1 F)60 years28 of 100 (Routine)
19 December 2018Williston Sloulin Fld, USdaily high min-1.0 C (30.2 F)0.1 C (0.2 F)87 years36 of 100 (Notable)
27 November 2018Williston Sloulin Fld, USdaily rain4.8 mm (0.19 in)0.2 mm (0.01 in)73 years20 of 100 (Routine)
11 October 2018Williston Sloulin Fld, USdaily low min-9.3 C (15.3 F)1.0 C (1.8 F)111 years42 of 100 (Notable)
20 September 2018Williston Sloulin Fld, USdaily rain23.9 mm (0.9 in)11.7 mm (0.5 in)7 years20 of 100 (Routine)

Climate Trend

122 complete years, 1894 to 2018
Annual mean temperature at Williston Sloulin Fld as warming stripes, 1894 to 2018 One stripe for each of 122 complete years at Williston Sloulin Fld, 1894 to 2018. Blue stripes are years cooler than the station's own mean of 5.1 C (41.1 F); red stripes are warmer. The coolest year was 1916, at 2.3 C (36.2 F), and the warmest was 1981, at 8.2 C (46.8 F). The strongest colour marks a difference of 3.2 C (5.8 F). 1894: 4.8 C, -0.3 C from the station mean1895: 4.0 C, -1.1 C from the station mean1896: 3.1 C, -2.0 C from the station mean1897: 3.8 C, -1.2 C from the station mean1898: 3.9 C, -1.1 C from the station mean1899: 2.7 C, -2.4 C from the station mean1900: 5.6 C, +0.6 C from the station mean1901: 5.3 C, +0.3 C from the station mean1902: 3.7 C, -1.4 C from the station mean1903: 3.4 C, -1.7 C from the station mean1907: 2.4 C, -2.7 C from the station mean1908: 5.0 C, -0.1 C from the station mean1909: 3.7 C, -1.3 C from the station mean1910: 5.1 C, 0.0 C from the station mean1911: 3.5 C, -1.6 C from the station mean1912: 3.8 C, -1.2 C from the station mean1913: 4.9 C, -0.1 C from the station mean1914: 5.1 C, 0.0 C from the station mean1915: 4.8 C, -0.2 C from the station mean1916: 2.3 C, -2.7 C from the station mean1917: 3.0 C, -2.1 C from the station mean1918: 4.9 C, -0.2 C from the station mean1919: 4.1 C, -1.0 C from the station mean1920: 4.9 C, -0.2 C from the station mean1921: 5.9 C, +0.8 C from the station mean1922: 4.3 C, -0.7 C from the station mean1923: 5.4 C, +0.3 C from the station mean1924: 4.1 C, -1.0 C from the station mean1925: 5.2 C, +0.1 C from the station mean1926: 5.5 C, +0.4 C from the station mean1927: 3.4 C, -1.7 C from the station mean1928: 5.4 C, +0.3 C from the station mean1929: 3.6 C, -1.5 C from the station mean1930: 5.7 C, +0.6 C from the station mean1931: 7.8 C, +2.7 C from the station mean1932: 5.1 C, 0.0 C from the station mean1933: 5.7 C, +0.7 C from the station mean1934: 7.0 C, +1.9 C from the station mean1935: 4.4 C, -0.6 C from the station mean1936: 4.3 C, -0.8 C from the station mean1937: 4.9 C, -0.2 C from the station mean1938: 6.2 C, +1.1 C from the station mean1939: 6.2 C, +1.1 C from the station mean1940: 5.6 C, +0.6 C from the station mean1941: 6.2 C, +1.1 C from the station mean1942: 5.5 C, +0.4 C from the station mean1943: 4.9 C, -0.1 C from the station mean1944: 5.7 C, +0.7 C from the station mean1945: 4.4 C, -0.7 C from the station mean1946: 5.7 C, +0.7 C from the station mean1947: 5.3 C, +0.2 C from the station mean1948: 5.1 C, 0.0 C from the station mean1949: 5.0 C, -0.1 C from the station mean1950: 2.6 C, -2.5 C from the station mean1951: 2.7 C, -2.3 C from the station mean1952: 5.7 C, +0.7 C from the station mean1953: 6.6 C, +1.6 C from the station mean1954: 5.8 C, +0.7 C from the station mean1955: 4.5 C, -0.6 C from the station mean1956: 5.2 C, +0.1 C from the station mean1957: 5.7 C, +0.7 C from the station mean1958: 6.2 C, +1.1 C from the station mean1959: 5.1 C, +0.1 C from the station mean1960: 5.6 C, +0.5 C from the station mean1961: 6.5 C, +1.5 C from the station mean1962: 5.3 C, +0.3 C from the station mean1963: 6.4 C, +1.3 C from the station mean1964: 4.9 C, -0.2 C from the station mean1965: 3.6 C, -1.5 C from the station mean1966: 4.4 C, -0.7 C from the station mean1967: 4.8 C, -0.2 C from the station mean1968: 5.0 C, -0.1 C from the station mean1969: 4.5 C, -0.5 C from the station mean1970: 4.3 C, -0.8 C from the station mean1971: 4.7 C, -0.4 C from the station mean1972: 3.6 C, -1.5 C from the station mean1973: 6.0 C, +0.9 C from the station mean1974: 5.4 C, +0.4 C from the station mean1975: 4.3 C, -0.7 C from the station mean1976: 5.6 C, +0.5 C from the station mean1977: 5.5 C, +0.5 C from the station mean1978: 3.9 C, -1.1 C from the station mean1979: 3.8 C, -1.3 C from the station mean1980: 6.2 C, +1.2 C from the station mean1981: 8.2 C, +3.1 C from the station mean1982: 4.3 C, -0.8 C from the station mean1983: 6.0 C, +0.9 C from the station mean1984: 5.8 C, +0.8 C from the station mean1985: 4.0 C, -1.0 C from the station mean1986: 6.1 C, +1.0 C from the station mean1987: 7.9 C, +2.8 C from the station mean1988: 6.6 C, +1.5 C from the station mean1989: 4.9 C, -0.1 C from the station mean1990: 6.7 C, +1.6 C from the station mean1991: 6.8 C, +1.7 C from the station mean1992: 6.0 C, +1.0 C from the station mean1993: 4.1 C, -0.9 C from the station mean1994: 4.9 C, -0.1 C from the station mean1995: 4.9 C, -0.2 C from the station mean1996: 3.0 C, -2.0 C from the station mean1997: 5.3 C, +0.2 C from the station mean1998: 6.3 C, +1.3 C from the station mean1999: 6.2 C, +1.2 C from the station mean2000: 5.1 C, +0.1 C from the station mean2001: 5.6 C, +0.5 C from the station mean2002: 4.6 C, -0.5 C from the station mean2003: 4.5 C, -0.5 C from the station mean2004: 4.8 C, -0.2 C from the station mean2005: 6.2 C, +1.1 C from the station mean2006: 6.7 C, +1.7 C from the station mean2007: 6.0 C, +0.9 C from the station mean2008: 4.8 C, -0.2 C from the station mean2009: 3.9 C, -1.2 C from the station mean2010: 4.9 C, -0.1 C from the station mean2011: 5.2 C, +0.1 C from the station mean2012: 6.7 C, +1.6 C from the station mean2013: 4.3 C, -0.8 C from the station mean2014: 4.9 C, -0.1 C from the station mean2015: 7.0 C, +2.0 C from the station mean2016: 7.6 C, +2.5 C from the station mean2017: 6.4 C, +1.3 C from the station mean2018: 4.8 C, -0.2 C from the station mean1894190019101920193019401950196019701980199020002010
One stripe for each of 122 complete years at Williston Sloulin Fld, 1894 to 2018. Blue stripes are years cooler than the station's own mean of 5.1 C (41.1 F); red stripes are warmer. The coolest year was 1916, at 2.3 C (36.2 F), and the warmest was 1981, at 8.2 C (46.8 F). The strongest colour marks a difference of 3.2 C (5.8 F).
Annual mean temperature at Williston Sloulin Fld as warming stripes, 1894 to 2018
YearAnnual mean temperatureDifference from the station mean
18944.8 C-0.28 C
18954.0 C-1.08 C
18963.1 C-1.98 C
18973.8 C-1.24 C
18983.9 C-1.12 C
18992.7 C-2.41 C
19005.6 C+0.58 C
19015.3 C+0.26 C
19023.7 C-1.37 C
19033.4 C-1.68 C
19072.4 C-2.68 C
19085.0 C-0.10 C
19093.7 C-1.32 C
19105.1 C-0.01 C
19113.5 C-1.57 C
19123.8 C-1.22 C
19134.9 C-0.12 C
19145.1 C+0.01 C
19154.8 C-0.24 C
19162.3 C-2.73 C
19173.0 C-2.07 C
19184.9 C-0.20 C
19194.1 C-1.01 C
19204.9 C-0.19 C
19215.9 C+0.81 C
19224.3 C-0.74 C
19235.4 C+0.32 C
19244.1 C-0.99 C
19255.2 C+0.13 C
19265.5 C+0.43 C
19273.4 C-1.69 C
19285.4 C+0.33 C
19293.6 C-1.46 C
19305.7 C+0.61 C
19317.8 C+2.71 C
19325.1 C+0.00 C
19335.7 C+0.68 C
19347.0 C+1.89 C
19354.4 C-0.65 C
19364.3 C-0.79 C
19374.9 C-0.16 C
19386.2 C+1.13 C
19396.2 C+1.14 C
19405.6 C+0.57 C
19416.2 C+1.09 C
19425.5 C+0.44 C
19434.9 C-0.12 C
19445.7 C+0.66 C
19454.4 C-0.69 C
19465.7 C+0.65 C
19475.3 C+0.21 C
19485.1 C+0.03 C
19495.0 C-0.10 C
19502.6 C-2.48 C
19512.7 C-2.32 C
19525.7 C+0.66 C
19536.6 C+1.55 C
19545.8 C+0.70 C
19554.5 C-0.61 C
19565.2 C+0.14 C
19575.7 C+0.66 C
19586.2 C+1.13 C
19595.1 C+0.05 C
19605.6 C+0.51 C
19616.5 C+1.48 C
19625.3 C+0.28 C
19636.4 C+1.33 C
19644.9 C-0.16 C
19653.6 C-1.47 C
19664.4 C-0.70 C
19674.8 C-0.24 C
19685.0 C-0.10 C
19694.5 C-0.52 C
19704.3 C-0.78 C
19714.7 C-0.41 C
19723.6 C-1.49 C
19736.0 C+0.92 C
19745.4 C+0.36 C
19754.3 C-0.74 C
19765.6 C+0.54 C
19775.5 C+0.48 C
19783.9 C-1.14 C
19793.8 C-1.31 C
19806.2 C+1.15 C
19818.2 C+3.14 C
19824.3 C-0.79 C
19836.0 C+0.91 C
19845.8 C+0.77 C
19854.0 C-1.03 C
19866.1 C+1.02 C
19877.9 C+2.82 C
19886.6 C+1.54 C
19894.9 C-0.15 C
19906.7 C+1.63 C
19916.8 C+1.72 C
19926.0 C+0.95 C
19934.1 C-0.94 C
19944.9 C-0.14 C
19954.9 C-0.20 C
19963.0 C-2.02 C
19975.3 C+0.20 C
19986.3 C+1.27 C
19996.2 C+1.16 C
20005.1 C+0.06 C
20015.6 C+0.51 C
20024.6 C-0.51 C
20034.5 C-0.55 C
20044.8 C-0.22 C
20056.2 C+1.14 C
20066.7 C+1.66 C
20076.0 C+0.91 C
20084.8 C-0.24 C
20093.9 C-1.21 C
20104.9 C-0.12 C
20115.2 C+0.11 C
20126.7 C+1.60 C
20134.3 C-0.76 C
20144.9 C-0.12 C
20157.0 C+1.95 C
20167.6 C+2.50 C
20176.4 C+1.31 C
20184.8 C-0.22 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1894 to 2018. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 122 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Williston Sloulin Fld
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1894 to 2018122Rise
Mean daily maximum0.2 C (0.1 to 0.3) per decade0.3 F (0.2 to 0.5) per decade1894 to 2018122Rise
Mean daily minimum0.05 C (-0.01 to 0.11) per decade0.09 F (-0.01 to 0.19) per decade1894 to 2018122Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1894 to 2019
Yearly extremes at Williston Sloulin Fld: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.3 C (109.9 F)193637.8 C (100.0 F)125
Coldest night (TNn)-45.6 C (-50.1 F)1936-35.0 C (-31.0 F)125
Wettest day (Rx1day)125.2 mm (4.9 in)196335.8 mm (1.4 in)125
Wettest five days (Rx5day)127.7 mm (5.0 in)196354.7 mm (2.2 in)125
Longest dry spell (CDD)77 days196034 days125

Hottest day (TXx)

Hottest day (TXx) at Williston Sloulin Fld by year The hottest day of the year at Williston Sloulin Fld, 1894 to 2019. The record is 43.3 C (109.9 F) in 1936, marked on the chart; the median year is 37.8 C (100.0 F). 30354045190019201940196019802000Record: 43.3 C (109.9 F) in 1936
The hottest day of the year at Williston Sloulin Fld, 1894 to 2019. The record is 43.3 C (109.9 F) in 1936, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Williston Sloulin Fld by year
YearHottest day (TXx)
189437.8 C (100.0 F)
189535.6 C (96.1 F)
189634.4 C (93.9 F)
189738.3 C (100.9 F)
189836.1 C (97.0 F)
189934.4 C (93.9 F)
190040.0 C (104.0 F)
190137.2 C (99.0 F)
190234.4 C (93.9 F)
190335.0 C (95.0 F)
190434.4 C (93.9 F)
190636.7 C (98.1 F)
190736.7 C (98.1 F)
190838.9 C (102.0 F)
190937.2 C (99.0 F)
191038.9 C (102.0 F)
191136.7 C (98.1 F)
191236.7 C (98.1 F)
191335.6 C (96.1 F)
191437.2 C (99.0 F)
191534.4 C (93.9 F)
191635.0 C (95.0 F)
191741.1 C (106.0 F)
191838.9 C (102.0 F)
191938.3 C (100.9 F)
192038.9 C (102.0 F)
192136.1 C (97.0 F)
192236.7 C (98.1 F)
192336.1 C (97.0 F)
192435.6 C (96.1 F)
192538.3 C (100.9 F)
192639.4 C (102.9 F)
192732.2 C (90.0 F)
192838.9 C (102.0 F)
192940.0 C (104.0 F)
193037.8 C (100.0 F)
193142.2 C (108.0 F)
193239.4 C (102.9 F)
193339.4 C (102.9 F)
193438.3 C (100.9 F)
193539.4 C (102.9 F)
193643.3 C (109.9 F)
193742.2 C (108.0 F)
193835.0 C (95.0 F)
193938.9 C (102.0 F)
194037.8 C (100.0 F)
194140.0 C (104.0 F)
194238.3 C (100.9 F)
194335.0 C (95.0 F)
194435.0 C (95.0 F)
194537.8 C (100.0 F)
194637.8 C (100.0 F)
194737.8 C (100.0 F)
194838.3 C (100.9 F)
194942.2 C (108.0 F)
195036.1 C (97.0 F)
195137.8 C (100.0 F)
195238.3 C (100.9 F)
195335.0 C (95.0 F)
195433.9 C (93.0 F)
195538.3 C (100.9 F)
195637.2 C (99.0 F)
195738.3 C (100.9 F)
195840.6 C (105.1 F)
195937.8 C (100.0 F)
196041.1 C (106.0 F)
196137.2 C (99.0 F)
196235.6 C (96.1 F)
196337.8 C (100.0 F)
196439.4 C (102.9 F)
196537.8 C (100.0 F)
196641.7 C (107.1 F)
196737.8 C (100.0 F)
196838.9 C (102.0 F)
196939.4 C (102.9 F)
197037.2 C (99.0 F)
197138.3 C (100.9 F)
197237.8 C (100.0 F)
197337.8 C (100.0 F)
197438.3 C (100.9 F)
197540.0 C (104.0 F)
197638.9 C (102.0 F)
197737.2 C (99.0 F)
197838.9 C (102.0 F)
197939.4 C (102.9 F)
198042.8 C (109.0 F)
198142.2 C (108.0 F)
198237.2 C (99.0 F)
198341.7 C (107.1 F)
198439.4 C (102.9 F)
198538.3 C (100.9 F)
198636.7 C (98.1 F)
198737.2 C (99.0 F)
198842.2 C (108.0 F)
198942.2 C (108.0 F)
199038.9 C (102.0 F)
199137.8 C (100.0 F)
199237.2 C (99.0 F)
199333.3 C (91.9 F)
199437.8 C (100.0 F)
199540.0 C (104.0 F)
199638.9 C (102.0 F)
199737.8 C (100.0 F)
199838.3 C (100.9 F)
199938.3 C (100.9 F)
200038.9 C (102.0 F)
200136.7 C (98.1 F)
200237.8 C (100.0 F)
200339.4 C (102.9 F)
200438.9 C (102.0 F)
200538.3 C (100.9 F)
200638.9 C (102.0 F)
200741.7 C (107.1 F)
200838.3 C (100.9 F)
200936.7 C (98.1 F)
201036.1 C (97.0 F)
201137.2 C (99.0 F)
201237.8 C (100.0 F)
201336.1 C (97.0 F)
201437.2 C (99.0 F)
201540.0 C (104.0 F)
201637.2 C (99.0 F)
201739.4 C (102.9 F)
201842.2 C (108.0 F)
201935.6 C (96.1 F)

Coldest night (TNn)

Coldest night (TNn) at Williston Sloulin Fld by year The coldest night of the year at Williston Sloulin Fld, 1894 to 2019. The record is -45.6 C (-50.1 F) in 1936, marked on the chart; the median year is -35.0 C (-31.0 F). -50-40-30-20190019201940196019802000Record: -45.6 C (-50.1 F) in 1936
The coldest night of the year at Williston Sloulin Fld, 1894 to 2019. The record is -45.6 C (-50.1 F) in 1936, marked on the chart; the median year is -35.0 C (-31.0 F).
Coldest night (TNn) at Williston Sloulin Fld by year
YearColdest night (TNn)
1894-37.8 C (-36.0 F)
1895-40.0 C (-40.0 F)
1896-32.2 C (-26.0 F)
1897-37.2 C (-35.0 F)
1898-32.2 C (-26.0 F)
1899-40.6 C (-41.1 F)
1900-37.8 C (-36.0 F)
1901-33.3 C (-27.9 F)
1902-34.4 C (-29.9 F)
1903-43.3 C (-45.9 F)
1904-36.7 C (-34.1 F)
1906-38.3 C (-36.9 F)
1907-45.0 C (-49.0 F)
1908-30.6 C (-23.1 F)
1909-38.3 C (-36.9 F)
1910-40.0 C (-40.0 F)
1911-35.0 C (-31.0 F)
1912-41.1 C (-42.0 F)
1913-37.2 C (-35.0 F)
1914-36.7 C (-34.1 F)
1915-40.0 C (-40.0 F)
1916-41.1 C (-42.0 F)
1917-40.0 C (-40.0 F)
1918-36.1 C (-33.0 F)
1919-34.4 C (-29.9 F)
1920-38.3 C (-36.9 F)
1921-31.1 C (-24.0 F)
1922-37.8 C (-36.0 F)
1923-34.4 C (-29.9 F)
1924-35.0 C (-31.0 F)
1925-32.8 C (-27.0 F)
1926-28.3 C (-18.9 F)
1927-35.0 C (-31.0 F)
1928-35.6 C (-32.1 F)
1929-38.9 C (-38.0 F)
1930-33.3 C (-27.9 F)
1931-25.0 C (-13.0 F)
1932-31.1 C (-24.0 F)
1933-37.2 C (-35.0 F)
1934-34.4 C (-29.9 F)
1935-40.0 C (-40.0 F)
1936-45.6 C (-50.1 F)
1937-38.9 C (-38.0 F)
1938-35.0 C (-31.0 F)
1939-38.3 C (-36.9 F)
1940-32.2 C (-26.0 F)
1941-29.4 C (-20.9 F)
1942-32.8 C (-27.0 F)
1943-37.2 C (-35.0 F)
1944-32.8 C (-27.0 F)
1945-31.1 C (-24.0 F)
1946-31.7 C (-25.1 F)
1947-32.8 C (-27.0 F)
1948-33.9 C (-29.0 F)
1949-35.0 C (-31.0 F)
1950-38.3 C (-36.9 F)
1951-36.7 C (-34.1 F)
1952-32.2 C (-26.0 F)
1953-30.0 C (-22.0 F)
1954-39.4 C (-38.9 F)
1955-32.2 C (-26.0 F)
1956-31.1 C (-24.0 F)
1957-35.6 C (-32.1 F)
1958-31.1 C (-24.0 F)
1959-36.7 C (-34.1 F)
1960-30.0 C (-22.0 F)
1961-31.7 C (-25.1 F)
1962-40.6 C (-41.1 F)
1963-35.0 C (-31.0 F)
1964-34.4 C (-29.9 F)
1965-38.9 C (-38.0 F)
1966-40.0 C (-40.0 F)
1967-36.7 C (-34.1 F)
1968-37.2 C (-35.0 F)
1969-38.3 C (-36.9 F)
1970-37.2 C (-35.0 F)
1971-35.0 C (-31.0 F)
1972-35.6 C (-32.1 F)
1973-33.3 C (-27.9 F)
1974-37.8 C (-36.0 F)
1975-32.8 C (-27.0 F)
1976-35.0 C (-31.0 F)
1977-38.3 C (-36.9 F)
1978-36.7 C (-34.1 F)
1979-34.4 C (-29.9 F)
1980-36.7 C (-34.1 F)
1981-32.2 C (-26.0 F)
1982-37.2 C (-35.0 F)
1983-45.6 C (-50.1 F)
1984-36.7 C (-34.1 F)
1985-34.4 C (-29.9 F)
1986-35.6 C (-32.1 F)
1987-25.0 C (-13.0 F)
1988-35.0 C (-31.0 F)
1989-38.3 C (-36.9 F)
1990-36.1 C (-33.0 F)
1991-31.7 C (-25.1 F)
1992-32.2 C (-26.0 F)
1993-34.4 C (-29.9 F)
1994-35.6 C (-32.1 F)
1995-31.7 C (-25.1 F)
1996-38.3 C (-36.9 F)
1997-36.1 C (-33.0 F)
1998-35.6 C (-32.1 F)
1999-33.9 C (-29.0 F)
2000-32.8 C (-27.0 F)
2001-30.6 C (-23.1 F)
2002-33.3 C (-27.9 F)
2003-37.2 C (-35.0 F)
2004-36.7 C (-34.1 F)
2005-38.3 C (-36.9 F)
2006-31.1 C (-24.0 F)
2007-30.0 C (-22.0 F)
2008-33.3 C (-27.9 F)
2009-38.3 C (-36.9 F)
2010-35.6 C (-32.1 F)
2011-36.1 C (-33.0 F)
2012-28.9 C (-20.0 F)
2013-34.3 C (-29.7 F)
2014-31.6 C (-24.9 F)
2015-29.3 C (-20.7 F)
2016-31.0 C (-23.8 F)
2017-35.0 C (-31.0 F)
2018-34.9 C (-30.8 F)
2019-41.6 C (-42.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Williston Sloulin Fld by year The wettest day of the year at Williston Sloulin Fld, 1894 to 2019. The record is 125.2 mm (4.9 in) in 1963, marked on the chart; the median year is 35.8 mm (1.4 in). 050100150190019201940196019802000Record: 125.2 mm (4.9 in) in 1963
The wettest day of the year at Williston Sloulin Fld, 1894 to 2019. The record is 125.2 mm (4.9 in) in 1963, marked on the chart; the median year is 35.8 mm (1.4 in).
Wettest day (Rx1day) at Williston Sloulin Fld by year
YearWettest day (Rx1day)
189429.7 mm (1.2 in)
189533.0 mm (1.3 in)
189652.8 mm (2.1 in)
189729.5 mm (1.2 in)
189828.2 mm (1.1 in)
189932.8 mm (1.3 in)
190063.5 mm (2.5 in)
190156.6 mm (2.2 in)
190248.3 mm (1.9 in)
190338.1 mm (1.5 in)
190424.1 mm (0.9 in)
190634.5 mm (1.4 in)
190730.0 mm (1.2 in)
190826.7 mm (1.1 in)
190933.0 mm (1.3 in)
191023.4 mm (0.9 in)
191125.9 mm (1.0 in)
191229.0 mm (1.1 in)
191348.8 mm (1.9 in)
191454.9 mm (2.2 in)
191542.9 mm (1.7 in)
191630.7 mm (1.2 in)
191718.8 mm (0.7 in)
191829.2 mm (1.1 in)
191953.1 mm (2.1 in)
192058.4 mm (2.3 in)
192138.1 mm (1.5 in)
192238.9 mm (1.5 in)
192347.2 mm (1.9 in)
192461.7 mm (2.4 in)
192545.0 mm (1.8 in)
192644.5 mm (1.8 in)
192732.3 mm (1.3 in)
192841.1 mm (1.6 in)
192937.1 mm (1.5 in)
193034.5 mm (1.4 in)
193123.9 mm (0.9 in)
193277.5 mm (3.1 in)
193338.6 mm (1.5 in)
193424.1 mm (0.9 in)
193537.6 mm (1.5 in)
193615.7 mm (0.6 in)
193727.7 mm (1.1 in)
193843.2 mm (1.7 in)
193924.4 mm (1.0 in)
194022.6 mm (0.9 in)
194126.2 mm (1.0 in)
194251.8 mm (2.0 in)
194327.7 mm (1.1 in)
194450.3 mm (2.0 in)
194521.1 mm (0.8 in)
194641.1 mm (1.6 in)
194740.9 mm (1.6 in)
194832.5 mm (1.3 in)
194925.4 mm (1.0 in)
195043.7 mm (1.7 in)
195140.6 mm (1.6 in)
195242.7 mm (1.7 in)
195343.9 mm (1.7 in)
195437.1 mm (1.5 in)
195527.7 mm (1.1 in)
195664.3 mm (2.5 in)
195718.8 mm (0.7 in)
195820.6 mm (0.8 in)
195947.2 mm (1.9 in)
196052.8 mm (2.1 in)
196132.3 mm (1.3 in)
196250.3 mm (2.0 in)
1963125.2 mm (4.9 in)
196440.1 mm (1.6 in)
196538.6 mm (1.5 in)
196633.0 mm (1.3 in)
196748.3 mm (1.9 in)
196837.8 mm (1.5 in)
196932.5 mm (1.3 in)
197025.9 mm (1.0 in)
197146.2 mm (1.8 in)
197262.2 mm (2.4 in)
197340.6 mm (1.6 in)
197438.1 mm (1.5 in)
197533.0 mm (1.3 in)
197628.4 mm (1.1 in)
197727.7 mm (1.1 in)
197856.9 mm (2.2 in)
197929.7 mm (1.2 in)
198023.4 mm (0.9 in)
198124.4 mm (1.0 in)
198231.0 mm (1.2 in)
198338.1 mm (1.5 in)
198425.4 mm (1.0 in)
198529.2 mm (1.1 in)
198671.6 mm (2.8 in)
198785.1 mm (3.4 in)
198835.3 mm (1.4 in)
198922.4 mm (0.9 in)
199029.0 mm (1.1 in)
199135.8 mm (1.4 in)
199230.0 mm (1.2 in)
199377.2 mm (3.0 in)
199456.1 mm (2.2 in)
199527.7 mm (1.1 in)
199626.4 mm (1.0 in)
1997122.4 mm (4.8 in)
199835.8 mm (1.4 in)
199933.0 mm (1.3 in)
200050.3 mm (2.0 in)
200134.8 mm (1.4 in)
200235.8 mm (1.4 in)
200335.3 mm (1.4 in)
200435.8 mm (1.4 in)
200528.4 mm (1.1 in)
200655.9 mm (2.2 in)
200733.8 mm (1.3 in)
200838.4 mm (1.5 in)
200931.5 mm (1.2 in)
201043.7 mm (1.7 in)
201132.3 mm (1.3 in)
201226.4 mm (1.0 in)
201344.2 mm (1.7 in)
201428.4 mm (1.1 in)
201545.2 mm (1.8 in)
201627.4 mm (1.1 in)
201736.8 mm (1.4 in)
201835.8 mm (1.4 in)
201979.2 mm (3.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Williston Sloulin Fld by year The wettest five days of the year at Williston Sloulin Fld, 1894 to 2019. The record is 127.7 mm (5.0 in) in 1963, marked on the chart; the median year is 54.7 mm (2.2 in). 050100150190019201940196019802000Record: 127.7 mm (5.0 in) in 1963
The wettest five days of the year at Williston Sloulin Fld, 1894 to 2019. The record is 127.7 mm (5.0 in) in 1963, marked on the chart; the median year is 54.7 mm (2.2 in).
Wettest five days (Rx5day) at Williston Sloulin Fld by year
YearWettest five days (Rx5day)
189459.1 mm (2.3 in)
189546.2 mm (1.8 in)
189674.7 mm (2.9 in)
189730.5 mm (1.2 in)
189856.1 mm (2.2 in)
189973.3 mm (2.9 in)
1900101.4 mm (4.0 in)
190188.8 mm (3.5 in)
190273.7 mm (2.9 in)
190395.7 mm (3.8 in)
190449.5 mm (1.9 in)
190683.3 mm (3.3 in)
190731.8 mm (1.3 in)
190840.8 mm (1.6 in)
190963.7 mm (2.5 in)
191032.8 mm (1.3 in)
191136.1 mm (1.4 in)
191243.9 mm (1.7 in)
191378.8 mm (3.1 in)
191475.0 mm (3.0 in)
191546.5 mm (1.8 in)
191656.7 mm (2.2 in)
191735.3 mm (1.4 in)
191856.6 mm (2.2 in)
191953.1 mm (2.1 in)
192063.0 mm (2.5 in)
192197.8 mm (3.9 in)
192286.4 mm (3.4 in)
192362.2 mm (2.4 in)
192478.7 mm (3.1 in)
192579.1 mm (3.1 in)
192645.8 mm (1.8 in)
192760.0 mm (2.4 in)
192877.2 mm (3.0 in)
192978.5 mm (3.1 in)
193046.2 mm (1.8 in)
193127.2 mm (1.1 in)
1932118.2 mm (4.7 in)
193354.6 mm (2.1 in)
193441.9 mm (1.6 in)
193547.5 mm (1.9 in)
193625.4 mm (1.0 in)
193739.1 mm (1.5 in)
193853.4 mm (2.1 in)
193940.4 mm (1.6 in)
194042.7 mm (1.7 in)
194139.4 mm (1.6 in)
194276.5 mm (3.0 in)
194350.9 mm (2.0 in)
194498.8 mm (3.9 in)
194540.9 mm (1.6 in)
194658.1 mm (2.3 in)
194775.7 mm (3.0 in)
194854.9 mm (2.2 in)
194934.3 mm (1.4 in)
195055.1 mm (2.2 in)
195159.7 mm (2.4 in)
195258.2 mm (2.3 in)
195361.9 mm (2.4 in)
195459.0 mm (2.3 in)
195543.6 mm (1.7 in)
195671.1 mm (2.8 in)
195734.8 mm (1.4 in)
195825.4 mm (1.0 in)
195976.5 mm (3.0 in)
196070.4 mm (2.8 in)
196143.7 mm (1.7 in)
196265.5 mm (2.6 in)
1963127.7 mm (5.0 in)
196468.7 mm (2.7 in)
196584.8 mm (3.3 in)
196641.5 mm (1.6 in)
196754.7 mm (2.2 in)
196851.0 mm (2.0 in)
196956.1 mm (2.2 in)
197057.7 mm (2.3 in)
197163.0 mm (2.5 in)
197265.0 mm (2.6 in)
197368.0 mm (2.7 in)
197445.4 mm (1.8 in)
197556.9 mm (2.2 in)
197630.9 mm (1.2 in)
197753.1 mm (2.1 in)
197868.8 mm (2.7 in)
197941.6 mm (1.6 in)
198031.8 mm (1.3 in)
198154.4 mm (2.1 in)
198246.4 mm (1.8 in)
198346.7 mm (1.8 in)
198434.8 mm (1.4 in)
198538.1 mm (1.5 in)
1986101.8 mm (4.0 in)
1987105.2 mm (4.1 in)
198850.0 mm (2.0 in)
198937.1 mm (1.5 in)
199031.4 mm (1.2 in)
199170.1 mm (2.8 in)
199240.7 mm (1.6 in)
199394.3 mm (3.7 in)
199473.8 mm (2.9 in)
199551.1 mm (2.0 in)
199635.9 mm (1.4 in)
1997127.0 mm (5.0 in)
199854.8 mm (2.2 in)
199950.3 mm (2.0 in)
200070.7 mm (2.8 in)
200149.2 mm (1.9 in)
200251.3 mm (2.0 in)
200335.6 mm (1.4 in)
200447.2 mm (1.9 in)
200555.4 mm (2.2 in)
200674.2 mm (2.9 in)
200749.6 mm (2.0 in)
200839.2 mm (1.5 in)
200951.0 mm (2.0 in)
201059.8 mm (2.4 in)
201160.0 mm (2.4 in)
201234.8 mm (1.4 in)
201388.2 mm (3.5 in)
201436.5 mm (1.4 in)
201552.1 mm (2.1 in)
201653.3 mm (2.1 in)
201737.3 mm (1.5 in)
201838.6 mm (1.5 in)
2019102.6 mm (4.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Williston Sloulin Fld by year The longest dry spell of the year at Williston Sloulin Fld, 1894 to 2019. The record is 77 days in 1960, marked on the chart; the median year is 34 days. 020406080190019201940196019802000Record: 77 days in 1960
The longest dry spell of the year at Williston Sloulin Fld, 1894 to 2019. The record is 77 days in 1960, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Williston Sloulin Fld by year
YearLongest dry spell (CDD)
189439 days
189552 days
189626 days
189725 days
189837 days
189944 days
190032 days
190122 days
190223 days
190336 days
190423 days
190630 days
190768 days
190836 days
190935 days
191072 days
191144 days
191241 days
191350 days
191438 days
191522 days
191633 days
191735 days
191832 days
191941 days
192040 days
192130 days
192231 days
192330 days
192422 days
192522 days
192637 days
192719 days
192849 days
192923 days
193031 days
193145 days
193222 days
193329 days
193476 days
193540 days
193634 days
193736 days
193829 days
193942 days
194037 days
194126 days
194234 days
194342 days
194434 days
194526 days
194628 days
194730 days
194842 days
194937 days
195027 days
195133 days
195234 days
195331 days
195433 days
195548 days
195631 days
195728 days
195841 days
195926 days
196077 days
196130 days
196243 days
196365 days
196429 days
196548 days
196651 days
196725 days
196828 days
196935 days
197031 days
197137 days
197233 days
197335 days
197437 days
197534 days
197633 days
197745 days
197834 days
197966 days
198046 days
198135 days
198229 days
198357 days
198420 days
198538 days
198640 days
198747 days
198826 days
198931 days
199040 days
199129 days
199223 days
199329 days
199435 days
199524 days
199617 days
199744 days
199844 days
199944 days
200029 days
200141 days
200217 days
200322 days
200426 days
200552 days
200635 days
200740 days
200829 days
200957 days
201032 days
201116 days
201247 days
201322 days
201437 days
201529 days
201633 days
201730 days
201823 days
201936 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

122 years with a frost

Across 122 years with a frost, the median last spring frost at Williston Sloulin Fld falls on 15 May and the median first autumn frost on 20 September, which leaves a median of 127 days between them.

In 1989 to 2018 the median growing season was 121 days. That is 2 days fewer than in 1894 to 1926.

Fitted over all years, the growing season changes by +0.2 days per decade at this station.

Frost dates and growing season at Williston Sloulin Fld
MeasureMedian, all yearsEarliest period (1894 to 1926)Recent period (1989 to 2018)Recent against earliestFitted trend
Last spring frost15 May17 May20 May3 days later+0.2 days per decade
First autumn frost20 September17 September19 September2 days later+0.4 days per decade
Growing days127 days123 days121 days2 days fewer+0.2 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

122 years, 1894 to 2018

A day with at least 35.4 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 102.3 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Williston Sloulin Fld: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years35.4 mm (1.4 in)
5 years48.4 mm (1.9 in)
10 years58.7 mm (2.3 in)
25 years74.0 mm (2.9 in)
50 years87.2 mm (3.4 in)
100 years102.3 mm (4.0 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 122 years of values from 1894 to 2018.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 125.2 mm (4.9 in) in 1963; 122.4 mm (4.8 in) in 1997; 85.1 mm (3.4 in) in 1987.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2004 to 2018 against 1961 to 1990

Over 2004 to 2018, Williston Sloulin Fld had a mean temperature of 5.6 C (42.1 F) and 376.0 mm (14.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Pretty Rock (United States, 260 km away), Trotters 3 SSE (United States, 101 km away) and Mott (United States, 223 km away).

Climate twins of Williston Sloulin Fld: stations whose 1961 to 1990 climate is closest to its 2004 to 2018 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Pretty RockUnited States260 km (162 mi)5.9 C (42.7 F)430.5 mm (16.9 in)0.72
Trotters 3 SSEUnited States101 km (63 mi)5.8 C (42.4 F)361.0 mm (14.2 in)0.79
MottUnited States223 km (139 mi)5.6 C (42.1 F)408.9 mm (16.1 in)0.80

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Williston Sloulin Fld standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Williston Sloulin Fld threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).