Built 2026-10-17 (17 October 2026)

Lake Arthur 7 SW Weather Records (USC00165065)

Record envelope, standing records and threshold days for Lake Arthur 7 SW (USC00165065), Louisiana, United States, with 126 years of record.

Key Facts for Lake Arthur 7 SW

  • Lake Arthur 7 SW (USC00165065) is a weather station in Louisiana, United States at 30.02 latitude and -92.77 longitude, 4 m (12 ft) above sea level.
  • The station reports from 1901 to 2026, 126 years of record.
  • 1,464 records set at Lake Arthur 7 SW still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Lake Arthur 7 SW tied a daily record high minimum temperature of 25.0 C (77.0 F) on 4 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Louisiana, United States, 30.02 latitude, -92.77 longitude.
  • Elevation: 4 m (12 ft).
  • Period of record: 1901 to 2026, 126 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

1 days at or beyond a record
Daily record high and record low at Lake Arthur 7 SW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lake Arthur 7 SW. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lake Arthur 7 SW. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Lake Arthur 7 SW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.8 C (91.0 F)-10.6 C (12.9 F)25.6 C (78.1 F)-4.4 C (24.1 F)
Feb30.6 C (87.1 F)-11.7 C (10.9 F)26.7 C (80.1 F)-3.3 C (26.1 F)
Mar33.3 C (91.9 F)-3.9 C (25.0 F)27.8 C (82.0 F)2.8 C (37.0 F)
Apr34.4 C (93.9 F)1.1 C (34.0 F)29.4 C (84.9 F)11.7 C (53.1 F)
May37.2 C (99.0 F)5.6 C (42.1 F)31.7 C (89.1 F)11.7 C (53.1 F)
Jun39.4 C (102.9 F)11.7 C (53.1 F)33.3 C (91.9 F)22.2 C (72.0 F)
Jul38.9 C (102.0 F)16.1 C (61.0 F)35.6 C (96.1 F)22.2 C (72.0 F)
Aug41.1 C (106.0 F)14.4 C (57.9 F)36.7 C (98.1 F)22.8 C (73.0 F)
Sep40.6 C (105.1 F)5.0 C (41.0 F)34.4 C (93.9 F)18.9 C (66.0 F)
Oct37.2 C (99.0 F)1.1 C (34.0 F)32.2 C (90.0 F)18.3 C (64.9 F)
Nov32.2 C (90.0 F)-5.0 C (23.0 F)n/an/a
Dec29.4 C (84.9 F)-7.8 C (18.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lake Arthur 7 SW by the year they were set 1,464 records at Lake Arthur 7 SW still stand. 1911 holds the most, with 44. 02040601901: 41902: 151903: 121904: 141905: 151906: 161907: 371908: 151909: 231910: 201911: 441912: 141913: 341914: 101915: 181916: 71917: 161918: 111919: 61920: 101921: 181922: 81924: 61925: 281926: 111927: 311928: 201929: 331930: 271931: 151932: 301933: 141934: 71935: 141936: 151937: 311938: 191939: 71940: 221941: 131942: 11943: 171944: 51945: 81946: 91947: 101948: 171949: 111950: 121951: 181952: 101953: 61954: 51955: 131956: 41957: 241958: 161959: 101960: 71961: 161962: 131963: 101964: 91965: 81966: 71967: 201968: 111969: 121970: 111971: 41972: 51973: 71974: 161975: 31976: 131977: 91978: 121979: 11995: 51996: 101997: 41998: 91999: 132000: 122001: 52002: 122003: 52004: 242005: 182006: 102007: 142008: 132009: 192010: 132011: 232012: 42013: 52014: 102015: 162016: 42017: 142018: 132019: 92020: 72021: 102022: 102023: 122024: 142025: 152026: 121901191219241935194619571968197920052016
1,464 records at Lake Arthur 7 SW still stand. 1911 holds the most, with 44.
Standing records at Lake Arthur 7 SW by the year they were set
Year setStanding records
19014
190215
190312
190414
190515
190616
190737
190815
190923
191020
191144
191214
191334
191410
191518
19167
191716
191811
19196
192010
192118
19228
19246
192528
192611
192731
192820
192933
193027
193115
193230
193314
19347
193514
193615
193731
193819
19397
194022
194113
19421
194317
19445
19458
19469
194710
194817
194911
195012
195118
195210
19536
19545
195513
19564
195724
195816
195910
19607
196116
196213
196310
19649
19658
19667
196720
196811
196912
197011
19714
19725
19737
197416
19753
197613
19779
197812
19791
19955
199610
19974
19989
199913
200012
20015
200212
20035
200424
200518
200610
200714
200813
200919
201013
201123
20124
20135
201410
201516
20164
201714
201813
20199
20207
202110
202210
202312
202414
202515
202612

All-Time Record Progression

8 new records
When Lake Arthur 7 SW set new all-time records 8 all-time records were set at Lake Arthur 7 SW between 15 August 1938 and 28 August 2023. Each dot is a new record. Record daily precipitationRecord low minimum temperatureRecord low maximum temperatureRecord daily snowfallRecord high maximum temperatureRecord snow depth15 August 1938: Record daily precipitation 355.6 mm (14.0 in)1 February 1951: Record low minimum temperature -11.7 C (10.9 F)2 February 1951: Record low maximum temperature -3.3 C (26.1 F)13 February 1960: Record daily snowfall 17.8 cm (7.0 in)12 January 1962: Record low maximum temperature -3.9 C (25.0 F)6 August 1964: Record high maximum temperature 40.6 C (105.1 F)20 January 1998: Record snow depth 12.7 cm (5.0 in)28 August 2023: Record high maximum temperature 41.1 C (106.0 F)19501965198019952010
8 all-time records were set at Lake Arthur 7 SW between 15 August 1938 and 28 August 2023. Each dot is a new record.
When Lake Arthur 7 SW set new all-time records
DateKindDetail
1938-08-15Record daily precipitationRecord daily precipitation 355.6 mm (14.0 in)
1951-02-01Record low minimum temperatureRecord low minimum temperature -11.7 C (10.9 F)
1951-02-02Record low maximum temperatureRecord low maximum temperature -3.3 C (26.1 F)
1960-02-13Record daily snowfallRecord daily snowfall 17.8 cm (7.0 in)
1962-01-12Record low maximum temperatureRecord low maximum temperature -3.9 C (25.0 F)
1964-08-06Record high maximum temperatureRecord high maximum temperature 40.6 C (105.1 F)
1998-01-20Record snow depthRecord snow depth 12.7 cm (5.0 in)
2023-08-28Record high maximum temperatureRecord high maximum temperature 41.1 C (106.0 F)

Wettest Day of Each Month

Aug: 355.6 mm (14.0 in)
Record daily precipitation for each month at Lake Arthur 7 SW The wettest day on record for each calendar month at Lake Arthur 7 SW. The most was 355.6 mm (14.0 in) on 15 August 1938. 0100200300400 Jan: 203.2 mm (8.0 in), 10 January 2013 Jan Feb: 138.2 mm (5.4 in), 5 February 1943 Feb Mar: 203.2 mm (8.0 in), 13 March 1947 Mar Apr: 285.8 mm (11.3 in), 14 April 1967 Apr May: 181.9 mm (7.2 in), 3 May 2000 May Jun: 288.5 mm (11.4 in), 14 June 1940 Jun Jul: 166.4 mm (6.6 in), 16 July 1952 Jul Aug: 355.6 mm (14.0 in), 15 August 1938 Aug Sep: 207.0 mm (8.1 in), 25 September 1913 Sep Oct: 153.7 mm (6.1 in), 28 October 2002 Oct Nov: 259.1 mm (10.2 in), 7 November 1943 Nov Dec: 262.6 mm (10.3 in), 6 December 1971 Dec
The wettest day on record for each calendar month at Lake Arthur 7 SW. The most was 355.6 mm (14.0 in) on 15 August 1938.
Record daily precipitation for each month at Lake Arthur 7 SW
MonthRecord daily precipitation (mm)Date
Jan203.2 mm (8.0 in)10 January 2013
Feb138.2 mm (5.4 in)5 February 1943
Mar203.2 mm (8.0 in)13 March 1947
Apr285.8 mm (11.3 in)14 April 1967
May181.9 mm (7.2 in)3 May 2000
Jun288.5 mm (11.4 in)14 June 1940
Jul166.4 mm (6.6 in)16 July 1952
Aug355.6 mm (14.0 in)15 August 1938
Sep207.0 mm (8.1 in)25 September 1913
Oct153.7 mm (6.1 in)28 October 2002
Nov259.1 mm (10.2 in)7 November 1943
Dec262.6 mm (10.3 in)6 December 1971

Period of Record Coverage

1901 to 2026
Days with data per year at Lake Arthur 7 SW 111 years of record at Lake Arthur 7 SW, 1901 to 2026. 27 years have data for under 90 percent of days and are left out of rankings: 1901, 1909, 1923, 1924, 1925, 1926, 1927, 1930 and others. 1901: 26 of 365 days1902: 364 of 365 days1903: 336 of 365 days1904: 363 of 366 days1905: 358 of 365 days1906: 358 of 365 days1907: 362 of 365 days1908: 363 of 366 days1909: 298 of 365 days1910: 365 of 365 days1911: 362 of 365 days1912: 361 of 366 days1913: 358 of 365 days1914: 364 of 365 days1915: 363 of 365 days1916: 362 of 366 days1917: 363 of 365 days1918: 358 of 365 days1919: 361 of 365 days1920: 363 of 366 days1921: 360 of 365 days1922: 365 of 365 days1923: 30 of 365 days1924: 54 of 366 days1925: 313 of 365 days1926: 287 of 365 days1927: 167 of 365 days1928: 339 of 366 days1929: 353 of 365 days1930: 315 of 365 days1931: 360 of 365 days1932: 362 of 366 days1933: 344 of 365 days1934: 311 of 365 days1935: 360 of 365 days1936: 362 of 366 days1937: 360 of 365 days1938: 285 of 365 days1939: 259 of 365 days1940: 281 of 366 days1941: 354 of 365 days1942: 345 of 365 days1943: 347 of 365 days1944: 345 of 366 days1945: 357 of 365 days1946: 299 of 365 days1947: 299 of 365 days1948: 357 of 366 days1949: 355 of 365 days1950: 354 of 365 days1951: 363 of 365 days1952: 363 of 366 days1953: 364 of 365 days1954: 364 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 363 of 365 days1958: 365 of 365 days1959: 364 of 365 days1960: 365 of 366 days1961: 363 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 363 of 366 days1965: 361 of 365 days1966: 354 of 365 days1967: 343 of 365 days1968: 331 of 366 days1969: 347 of 365 days1970: 353 of 365 days1971: 352 of 365 days1972: 354 of 366 days1973: 324 of 365 days1974: 357 of 365 days1975: 350 of 365 days1976: 295 of 366 days1977: 349 of 365 days1978: 359 of 365 days1979: 90 of 365 days1995: 145 of 365 days1996: 357 of 366 days1997: 356 of 365 days1998: 357 of 365 days1999: 293 of 365 days2000: 252 of 366 days2001: 247 of 365 days2002: 248 of 365 days2003: 259 of 365 days2004: 304 of 366 days2005: 355 of 365 days2006: 365 of 365 days2007: 334 of 365 days2008: 365 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 363 of 366 days2013: 365 of 365 days2014: 343 of 365 days2015: 364 of 365 days2016: 361 of 366 days2017: 359 of 365 days2018: 362 of 365 days2019: 364 of 365 days2020: 261 of 366 days2021: 183 of 365 days2022: 365 of 365 days2023: 364 of 365 days2024: 355 of 366 days2025: 363 of 365 days2026: 284 of 365 days19051920193519501965199520102025
111 years of record at Lake Arthur 7 SW, 1901 to 2026. 27 years have data for under 90 percent of days and are left out of rankings: 1901, 1909, 1923, 1924, 1925, 1926, 1927, 1930 and others.
Days with data per year at Lake Arthur 7 SW
YearDays with dataShare of yearComplete
1901267%No
1902364100%Yes
190333692%Yes
190436399%Yes
190535898%Yes
190635898%Yes
190736299%Yes
190836399%Yes
190929882%No
1910365100%Yes
191136299%Yes
191236199%Yes
191335898%Yes
1914364100%Yes
191536399%Yes
191636299%Yes
191736399%Yes
191835898%Yes
191936199%Yes
192036399%Yes
192136099%Yes
1922365100%Yes
1923308%No
19245415%No
192531386%No
192628779%No
192716746%No
192833993%Yes
192935397%Yes
193031586%No
193136099%Yes
193236299%Yes
193334494%Yes
193431185%No
193536099%Yes
193636299%Yes
193736099%Yes
193828578%No
193925971%No
194028177%No
194135497%Yes
194234595%Yes
194334795%Yes
194434594%Yes
194535798%Yes
194629982%No
194729982%No
194835798%Yes
194935597%Yes
195035497%Yes
195136399%Yes
195236399%Yes
1953364100%Yes
1954364100%Yes
1955365100%Yes
1956366100%Yes
195736399%Yes
1958365100%Yes
1959364100%Yes
1960365100%Yes
196136399%Yes
1962365100%Yes
1963365100%Yes
196436399%Yes
196536199%Yes
196635497%Yes
196734394%Yes
196833190%Yes
196934795%Yes
197035397%Yes
197135296%Yes
197235497%Yes
197332489%No
197435798%Yes
197535096%Yes
197629581%No
197734996%Yes
197835998%Yes
19799025%No
199514540%No
199635798%Yes
199735698%Yes
199835798%Yes
199929380%No
200025269%No
200124768%No
200224868%No
200325971%No
200430483%No
200535597%Yes
2006365100%Yes
200733492%Yes
2008365100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
201236399%Yes
2013365100%Yes
201434394%Yes
2015364100%Yes
201636199%Yes
201735998%Yes
201836299%Yes
2019364100%Yes
202026171%No
202118350%No
2022365100%Yes
2023364100%Yes
202435597%Yes
202536399%Yes
202628478%No

Latest Records

20
Latest records at Lake Arthur 7 SW
DateStationRecordValueBeat old record byOld record stoodSignificance
4 October 2026Lake Arthur 7 SW, USdaily high min (Tie, Provisional)25.0 C (77.0 F)tie84 years8 of 100 (Routine)
3 October 2026Lake Arthur 7 SW, USdaily high min (Tie, Provisional)25.0 C (77.0 F)tie84 years8 of 100 (Routine)
13 September 2026Lake Arthur 7 SW, USdaily high min (Tie, Provisional)25.6 C (78.1 F)tie101 years10 of 100 (Routine)
12 September 2026Lake Arthur 7 SW, USdaily high min (Tie, Provisional)25.6 C (78.1 F)tie75 years8 of 100 (Routine)
25 August 2026Lake Arthur 7 SW, USdaily high min (Tie, Provisional)26.7 C (80.1 F)tie21 years4 of 100 (Routine)
24 August 2026Lake Arthur 7 SW, USdaily high min (Provisional)26.7 C (80.1 F)0.6 C (1.1 F)15 years17 of 100 (Routine)
19 August 2026Lake Arthur 7 SW, USdaily high min (Tie, Provisional)26.1 C (79.0 F)tie20 years4 of 100 (Routine)
23 July 2026Lake Arthur 7 SW, USdaily high min27.2 C (81.0 F)0.5 C (0.9 F)123 years43 of 100 (Notable)
15 July 2026Lake Arthur 7 SW, USdaily low max25.6 C (78.1 F)1.1 C (2.0 F)80 years39 of 100 (Notable)
19 May 2026Lake Arthur 7 SW, USdaily high min25.6 C (78.1 F)0.6 C (1.1 F)0 years11 of 100 (Routine)
18 May 2026Lake Arthur 7 SW, USdaily high min (Tie)25.0 C (77.0 F)tie11 years3 of 100 (Routine)
8 May 2026Lake Arthur 7 SW, USdaily low max (Tie)22.8 C (73.0 F)tie65 years7 of 100 (Routine)
29 April 2026Lake Arthur 7 SW, USdaily high min (Tie)23.9 C (75.0 F)tie8 years3 of 100 (Routine)
28 April 2026Lake Arthur 7 SW, USdaily high min24.4 C (75.9 F)0.5 C (0.9 F)56 years27 of 100 (Routine)
27 April 2026Lake Arthur 7 SW, USdaily high min24.4 C (75.9 F)1.1 C (2.0 F)113 years42 of 100 (Notable)
3 April 2026Lake Arthur 7 SW, USdaily high min22.8 C (73.0 F)0.6 C (1.1 F)69 years31 of 100 (Routine)
11 March 2026Lake Arthur 7 SW, USdaily high min22.2 C (72.0 F)1.1 C (2.0 F)52 years27 of 100 (Routine)
10 March 2026Lake Arthur 7 SW, USdaily high min21.7 C (71.1 F)1.1 C (2.0 F)52 years27 of 100 (Routine)
8 March 2026Lake Arthur 7 SW, USdaily rain65.5 mm (2.6 in)38.3 mm (1.5 in)84 years55 of 100 (Notable)
7 March 2026Lake Arthur 7 SW, USdaily high min21.1 C (70.0 F)0.5 C (0.9 F)75 years32 of 100 (Routine)

Climate Trend

77 complete years, 1902 to 2025
Annual mean temperature at Lake Arthur 7 SW as warming stripes, 1902 to 2025 One stripe for each of 77 complete years at Lake Arthur 7 SW, 1902 to 2025. Blue stripes are years cooler than the station's own mean of 20.3 C (68.6 F); red stripes are warmer. The coolest year was 1968, at 19.0 C (66.2 F), and the warmest was 2023, at 21.7 C (71.1 F). The strongest colour marks a difference of 1.4 C (2.5 F). 1902: 20.1 C, -0.2 C from the station mean1904: 20.2 C, -0.2 C from the station mean1906: 20.3 C, -0.1 C from the station mean1907: 20.9 C, +0.6 C from the station mean1908: 20.7 C, +0.4 C from the station mean1910: 20.7 C, +0.4 C from the station mean1911: 21.3 C, +0.9 C from the station mean1912: 19.2 C, -1.2 C from the station mean1913: 19.5 C, -0.8 C from the station mean1914: 19.9 C, -0.4 C from the station mean1915: 20.3 C, 0.0 C from the station mean1916: 20.9 C, +0.5 C from the station mean1917: 19.7 C, -0.6 C from the station mean1918: 20.0 C, -0.4 C from the station mean1920: 20.3 C, -0.1 C from the station mean1921: 21.5 C, +1.1 C from the station mean1922: 21.4 C, +1.1 C from the station mean1929: 20.6 C, +0.2 C from the station mean1931: 20.5 C, +0.2 C from the station mean1932: 20.7 C, +0.3 C from the station mean1935: 21.0 C, +0.6 C from the station mean1936: 19.9 C, -0.5 C from the station mean1937: 19.6 C, -0.8 C from the station mean1941: 20.5 C, +0.1 C from the station mean1942: 20.1 C, -0.3 C from the station mean1944: 20.7 C, +0.4 C from the station mean1945: 20.8 C, +0.5 C from the station mean1948: 20.5 C, +0.2 C from the station mean1949: 20.8 C, +0.5 C from the station mean1950: 20.6 C, +0.2 C from the station mean1951: 20.0 C, -0.4 C from the station mean1952: 19.9 C, -0.4 C from the station mean1953: 20.6 C, +0.3 C from the station mean1954: 20.5 C, +0.1 C from the station mean1955: 20.2 C, -0.1 C from the station mean1956: 20.3 C, -0.1 C from the station mean1957: 20.6 C, +0.3 C from the station mean1958: 19.4 C, -0.9 C from the station mean1959: 19.5 C, -0.9 C from the station mean1960: 19.2 C, -1.1 C from the station mean1961: 19.4 C, -1.0 C from the station mean1962: 20.2 C, -0.2 C from the station mean1963: 19.6 C, -0.8 C from the station mean1964: 19.7 C, -0.7 C from the station mean1965: 20.2 C, -0.2 C from the station mean1966: 19.2 C, -1.2 C from the station mean1967: 19.8 C, -0.6 C from the station mean1968: 19.0 C, -1.4 C from the station mean1969: 19.8 C, -0.5 C from the station mean1970: 19.4 C, -0.9 C from the station mean1971: 20.2 C, -0.1 C from the station mean1972: 20.2 C, -0.1 C from the station mean1974: 20.3 C, -0.1 C from the station mean1975: 19.9 C, -0.4 C from the station mean1977: 19.8 C, -0.6 C from the station mean1978: 19.4 C, -0.9 C from the station mean1996: 19.9 C, -0.4 C from the station mean1997: 20.0 C, -0.4 C from the station mean1998: 21.4 C, +1.1 C from the station mean1999: 21.2 C, +0.8 C from the station mean2005: 21.6 C, +1.2 C from the station mean2006: 21.4 C, +1.1 C from the station mean2008: 21.2 C, +0.8 C from the station mean2009: 21.0 C, +0.6 C from the station mean2010: 20.4 C, 0.0 C from the station mean2011: 21.1 C, +0.7 C from the station mean2012: 21.7 C, +1.3 C from the station mean2013: 20.3 C, 0.0 C from the station mean2015: 20.3 C, 0.0 C from the station mean2016: 20.6 C, +0.2 C from the station mean2017: 20.6 C, +0.3 C from the station mean2018: 20.0 C, -0.3 C from the station mean2019: 19.9 C, -0.4 C from the station mean2022: 20.6 C, +0.2 C from the station mean2023: 21.7 C, +1.4 C from the station mean2024: 21.3 C, +1.0 C from the station mean2025: 21.0 C, +0.6 C from the station mean1902191019201930194019501960197019801990200020102020
One stripe for each of 77 complete years at Lake Arthur 7 SW, 1902 to 2025. Blue stripes are years cooler than the station's own mean of 20.3 C (68.6 F); red stripes are warmer. The coolest year was 1968, at 19.0 C (66.2 F), and the warmest was 2023, at 21.7 C (71.1 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Lake Arthur 7 SW as warming stripes, 1902 to 2025
YearAnnual mean temperatureDifference from the station mean
190220.1 C-0.22 C
190420.2 C-0.15 C
190620.3 C-0.06 C
190720.9 C+0.59 C
190820.7 C+0.39 C
191020.7 C+0.38 C
191121.3 C+0.94 C
191219.2 C-1.15 C
191319.5 C-0.80 C
191419.9 C-0.41 C
191520.3 C-0.04 C
191620.9 C+0.52 C
191719.7 C-0.63 C
191820.0 C-0.35 C
192020.3 C-0.05 C
192121.5 C+1.15 C
192221.4 C+1.07 C
192920.6 C+0.24 C
193120.5 C+0.20 C
193220.7 C+0.34 C
193521.0 C+0.63 C
193619.9 C-0.46 C
193719.6 C-0.75 C
194120.5 C+0.14 C
194220.1 C-0.28 C
194420.7 C+0.40 C
194520.8 C+0.49 C
194820.5 C+0.16 C
194920.8 C+0.46 C
195020.6 C+0.22 C
195120.0 C-0.35 C
195219.9 C-0.40 C
195320.6 C+0.26 C
195420.5 C+0.15 C
195520.2 C-0.14 C
195620.3 C-0.06 C
195720.6 C+0.30 C
195819.4 C-0.91 C
195919.5 C-0.85 C
196019.2 C-1.12 C
196119.4 C-0.97 C
196220.2 C-0.18 C
196319.6 C-0.79 C
196419.7 C-0.67 C
196520.2 C-0.17 C
196619.2 C-1.15 C
196719.8 C-0.58 C
196819.0 C-1.36 C
196919.8 C-0.54 C
197019.4 C-0.91 C
197120.2 C-0.11 C
197220.2 C-0.11 C
197420.3 C-0.09 C
197519.9 C-0.41 C
197719.8 C-0.59 C
197819.4 C-0.93 C
199619.9 C-0.43 C
199720.0 C-0.36 C
199821.4 C+1.07 C
199921.2 C+0.83 C
200521.6 C+1.24 C
200621.4 C+1.07 C
200821.2 C+0.84 C
200921.0 C+0.61 C
201020.4 C+0.05 C
201121.1 C+0.72 C
201221.7 C+1.32 C
201320.3 C-0.01 C
201520.3 C-0.03 C
201620.6 C+0.21 C
201720.6 C+0.29 C
201820.0 C-0.33 C
201919.9 C-0.41 C
202220.6 C+0.21 C
202321.7 C+1.40 C
202421.3 C+1.00 C
202521.0 C+0.61 C

The fitted trend in annual mean temperature here over 1902 to 2025 is 0.04 C (0.00 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.06 F (-0.01 to 0.14) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Lake Arthur 7 SW
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.04 C (0.00 to 0.08) per decade0.06 F (-0.01 to 0.14) per decade1902 to 202577Not clearly different from zero
Mean daily maximum-0.02 C (-0.08 to 0.03) per decade-0.05 F (-0.15 to 0.06) per decade1902 to 202577Not clearly different from zero
Mean daily minimum0.1 C (0.1 to 0.1) per decade0.2 F (0.1 to 0.3) per decade1902 to 202577Rise

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

1901 to 2026
Yearly extremes at Lake Arthur 7 SW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.1 C (106.0 F)202336.7 C (98.1 F)111
Coldest night (TNn)-11.7 C (10.9 F)1951-4.4 C (24.1 F)111
Wettest day (Rx1day)355.6 mm (14.0 in)1938111.8 mm (4.4 in)111
Wettest five days (Rx5day)678.1 mm (26.7 in)1940165.4 mm (6.5 in)111
Longest dry spell (CDD)59 days191624 days111

Hottest day (TXx)

Hottest day (TXx) at Lake Arthur 7 SW by year The hottest day of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 41.1 C (106.0 F) in 2023, marked on the chart; the median year is 36.7 C (98.1 F). 202530354045192019401960198020002020Record: 41.1 C (106.0 F) in 2023
The hottest day of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 41.1 C (106.0 F) in 2023, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Lake Arthur 7 SW by year
YearHottest day (TXx)
190123.9 C (75.0 F)
190237.2 C (99.0 F)
190336.7 C (98.1 F)
190436.7 C (98.1 F)
190536.1 C (97.0 F)
190637.2 C (99.0 F)
190737.2 C (99.0 F)
190836.1 C (97.0 F)
190936.7 C (98.1 F)
191036.7 C (98.1 F)
191137.8 C (100.0 F)
191235.6 C (96.1 F)
191337.8 C (100.0 F)
191438.9 C (102.0 F)
191537.8 C (100.0 F)
191636.7 C (98.1 F)
191737.8 C (100.0 F)
191837.8 C (100.0 F)
191936.1 C (97.0 F)
192035.6 C (96.1 F)
192137.2 C (99.0 F)
192236.1 C (97.0 F)
192324.4 C (75.9 F)
192436.1 C (97.0 F)
192539.4 C (102.9 F)
192637.8 C (100.0 F)
192738.3 C (100.9 F)
192837.8 C (100.0 F)
192938.3 C (100.9 F)
193038.9 C (102.0 F)
193137.2 C (99.0 F)
193238.9 C (102.0 F)
193337.2 C (99.0 F)
193436.1 C (97.0 F)
193538.9 C (102.0 F)
193637.2 C (99.0 F)
193737.2 C (99.0 F)
193835.0 C (95.0 F)
193937.8 C (100.0 F)
194034.4 C (93.9 F)
194135.0 C (95.0 F)
194236.1 C (97.0 F)
194337.2 C (99.0 F)
194437.2 C (99.0 F)
194535.6 C (96.1 F)
194634.4 C (93.9 F)
194737.2 C (99.0 F)
194836.7 C (98.1 F)
194935.0 C (95.0 F)
195036.1 C (97.0 F)
195136.7 C (98.1 F)
195235.0 C (95.0 F)
195336.1 C (97.0 F)
195437.8 C (100.0 F)
195535.6 C (96.1 F)
195636.1 C (97.0 F)
195735.0 C (95.0 F)
195835.0 C (95.0 F)
195934.4 C (93.9 F)
196037.2 C (99.0 F)
196134.4 C (93.9 F)
196238.9 C (102.0 F)
196335.6 C (96.1 F)
196440.6 C (105.1 F)
196535.6 C (96.1 F)
196635.6 C (96.1 F)
196734.4 C (93.9 F)
196834.4 C (93.9 F)
196936.7 C (98.1 F)
197037.2 C (99.0 F)
197135.0 C (95.0 F)
197235.0 C (95.0 F)
197334.4 C (93.9 F)
197435.6 C (96.1 F)
197534.4 C (93.9 F)
197635.6 C (96.1 F)
197736.1 C (97.0 F)
197836.1 C (97.0 F)
197925.0 C (77.0 F)
199537.2 C (99.0 F)
199635.6 C (96.1 F)
199736.7 C (98.1 F)
199837.2 C (99.0 F)
199937.8 C (100.0 F)
200040.6 C (105.1 F)
200136.1 C (97.0 F)
200235.6 C (96.1 F)
200335.6 C (96.1 F)
200437.2 C (99.0 F)
200537.8 C (100.0 F)
200636.1 C (97.0 F)
200739.4 C (102.9 F)
200836.7 C (98.1 F)
200939.4 C (102.9 F)
201038.3 C (100.9 F)
201139.4 C (102.9 F)
201238.3 C (100.9 F)
201336.7 C (98.1 F)
201433.9 C (93.0 F)
201537.2 C (99.0 F)
201635.6 C (96.1 F)
201733.9 C (93.0 F)
201835.6 C (96.1 F)
201934.4 C (93.9 F)
202034.4 C (93.9 F)
202135.0 C (95.0 F)
202236.1 C (97.0 F)
202341.1 C (106.0 F)
202435.0 C (95.0 F)
202535.0 C (95.0 F)
202636.7 C (98.1 F)

Coldest night (TNn)

Coldest night (TNn) at Lake Arthur 7 SW by year The coldest night of the year at Lake Arthur 7 SW, 1901 to 2026. The record is -11.7 C (10.9 F) in 1951, marked on the chart; the median year is -4.4 C (24.1 F). -15-10-505192019401960198020002020Record: -11.7 C (10.9 F) in 1951
The coldest night of the year at Lake Arthur 7 SW, 1901 to 2026. The record is -11.7 C (10.9 F) in 1951, marked on the chart; the median year is -4.4 C (24.1 F).
Coldest night (TNn) at Lake Arthur 7 SW by year
YearColdest night (TNn)
1901-6.1 C (21.0 F)
1902-1.1 C (30.0 F)
1903-3.9 C (25.0 F)
1904-2.8 C (27.0 F)
1905-5.6 C (21.9 F)
1906-3.3 C (26.1 F)
1907-1.7 C (28.9 F)
1908-1.1 C (30.0 F)
1909-6.1 C (21.0 F)
1910-3.3 C (26.1 F)
1911-6.7 C (19.9 F)
1912-6.1 C (21.0 F)
1913-1.1 C (30.0 F)
1914-2.8 C (27.0 F)
1915-1.7 C (28.9 F)
1916-4.4 C (24.1 F)
1917-7.2 C (19.0 F)
1918-10.6 C (12.9 F)
1919-5.0 C (23.0 F)
1920-0.6 C (30.9 F)
19210.0 C (32.0 F)
1922-0.6 C (30.9 F)
19233.3 C (37.9 F)
19242.2 C (36.0 F)
1925-5.6 C (21.9 F)
1926-1.1 C (30.0 F)
1927-4.4 C (24.1 F)
1928-7.2 C (19.0 F)
1929-5.6 C (21.9 F)
1930-8.3 C (17.1 F)
1931-1.1 C (30.0 F)
1932-4.4 C (24.1 F)
1933-7.8 C (18.0 F)
1934-5.6 C (21.9 F)
1935-7.8 C (18.0 F)
1936-5.6 C (21.9 F)
1937-5.6 C (21.9 F)
1938-3.9 C (25.0 F)
1939-1.1 C (30.0 F)
1940-9.4 C (15.1 F)
1941-1.1 C (30.0 F)
1942-5.0 C (23.0 F)
1943-5.0 C (23.0 F)
1944-2.2 C (28.0 F)
1945-5.0 C (23.0 F)
1946-2.8 C (27.0 F)
1947-3.9 C (25.0 F)
1948-7.8 C (18.0 F)
1949-5.6 C (21.9 F)
1950-7.2 C (19.0 F)
1951-11.7 C (10.9 F)
1952-3.3 C (26.1 F)
1953-3.3 C (26.1 F)
1954-2.8 C (27.0 F)
1955-5.0 C (23.0 F)
1956-3.3 C (26.1 F)
1957-2.8 C (27.0 F)
1958-5.6 C (21.9 F)
1959-4.4 C (24.1 F)
1960-3.3 C (26.1 F)
1961-4.4 C (24.1 F)
1962-10.6 C (12.9 F)
1963-10.6 C (12.9 F)
1964-6.7 C (19.9 F)
1965-5.6 C (21.9 F)
1966-6.1 C (21.0 F)
1967-3.3 C (26.1 F)
1968-2.8 C (27.0 F)
1969-3.9 C (25.0 F)
1970-6.1 C (21.0 F)
1971-2.2 C (28.0 F)
1972-5.0 C (23.0 F)
1973-5.0 C (23.0 F)
1974-0.6 C (30.9 F)
1975-3.9 C (25.0 F)
1976-5.0 C (23.0 F)
1977-7.2 C (19.0 F)
1978-3.3 C (26.1 F)
1979-6.7 C (19.9 F)
1995-3.3 C (26.1 F)
1996-7.8 C (18.0 F)
1997-2.8 C (27.0 F)
1998-0.6 C (30.9 F)
1999-3.3 C (26.1 F)
2000-3.3 C (26.1 F)
2001-4.4 C (24.1 F)
2002-3.9 C (25.0 F)
2003-5.0 C (23.0 F)
2004-2.8 C (27.0 F)
2005-0.6 C (30.9 F)
2006-2.8 C (27.0 F)
2007-0.6 C (30.9 F)
2008-1.7 C (28.9 F)
2009-1.7 C (28.9 F)
2010-6.1 C (21.0 F)
2011-4.4 C (24.1 F)
2012-1.1 C (30.0 F)
2013-1.1 C (30.0 F)
2014-6.7 C (19.9 F)
2015-4.4 C (24.1 F)
2016-1.1 C (30.0 F)
2017-5.0 C (23.0 F)
2018-7.8 C (18.0 F)
2019-2.8 C (27.0 F)
20201.7 C (35.1 F)
20214.4 C (39.9 F)
2022-7.8 C (18.0 F)
20230.6 C (33.1 F)
2024-6.7 C (19.9 F)
2025-10.0 C (14.0 F)
2026-4.4 C (24.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Lake Arthur 7 SW by year The wettest day of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 355.6 mm (14.0 in) in 1938, marked on the chart; the median year is 111.8 mm (4.4 in). 0100200300400192019401960198020002020Record: 355.6 mm (14.0 in) in 1938
The wettest day of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 355.6 mm (14.0 in) in 1938, marked on the chart; the median year is 111.8 mm (4.4 in).
Wettest day (Rx1day) at Lake Arthur 7 SW by year
YearWettest day (Rx1day)
190138.1 mm (1.5 in)
1902102.9 mm (4.1 in)
1903182.9 mm (7.2 in)
190478.0 mm (3.1 in)
1905104.1 mm (4.1 in)
190688.9 mm (3.5 in)
1907134.6 mm (5.3 in)
190888.9 mm (3.5 in)
190962.7 mm (2.5 in)
1910101.6 mm (4.0 in)
191168.6 mm (2.7 in)
191294.0 mm (3.7 in)
1913207.0 mm (8.1 in)
1914158.5 mm (6.2 in)
1915121.9 mm (4.8 in)
1916108.5 mm (4.3 in)
191755.4 mm (2.2 in)
191870.6 mm (2.8 in)
191995.3 mm (3.8 in)
1920154.9 mm (6.1 in)
1921124.5 mm (4.9 in)
1922110.5 mm (4.4 in)
1923105.4 mm (4.1 in)
192427.9 mm (1.1 in)
1925104.1 mm (4.1 in)
1926111.8 mm (4.4 in)
192786.4 mm (3.4 in)
1928106.7 mm (4.2 in)
1929126.2 mm (5.0 in)
193091.9 mm (3.6 in)
1931116.8 mm (4.6 in)
1932155.4 mm (6.1 in)
1933132.1 mm (5.2 in)
193476.2 mm (3.0 in)
193588.9 mm (3.5 in)
1936111.8 mm (4.4 in)
193791.4 mm (3.6 in)
1938355.6 mm (14.0 in)
1939127.0 mm (5.0 in)
1940294.6 mm (11.6 in)
1941125.0 mm (4.9 in)
1942225.6 mm (8.9 in)
1943259.1 mm (10.2 in)
194483.8 mm (3.3 in)
194589.9 mm (3.5 in)
1946121.9 mm (4.8 in)
1947203.2 mm (8.0 in)
194870.1 mm (2.8 in)
194994.0 mm (3.7 in)
1950101.6 mm (4.0 in)
195158.4 mm (2.3 in)
1952166.4 mm (6.6 in)
1953152.4 mm (6.0 in)
195441.1 mm (1.6 in)
1955121.4 mm (4.8 in)
195678.0 mm (3.1 in)
1957143.0 mm (5.6 in)
195853.8 mm (2.1 in)
1959112.5 mm (4.4 in)
1960102.1 mm (4.0 in)
1961111.8 mm (4.4 in)
1962183.1 mm (7.2 in)
196390.2 mm (3.6 in)
1964114.8 mm (4.5 in)
1965143.8 mm (5.7 in)
1966123.7 mm (4.9 in)
1967285.8 mm (11.3 in)
196895.3 mm (3.8 in)
1969123.4 mm (4.9 in)
1970145.3 mm (5.7 in)
1971262.6 mm (10.3 in)
1972132.1 mm (5.2 in)
1973101.1 mm (4.0 in)
1974132.1 mm (5.2 in)
197576.2 mm (3.0 in)
197667.1 mm (2.6 in)
1977167.1 mm (6.6 in)
1978175.0 mm (6.9 in)
197977.5 mm (3.1 in)
1995133.4 mm (5.3 in)
1996122.7 mm (4.8 in)
1997101.1 mm (4.0 in)
1998175.3 mm (6.9 in)
1999113.3 mm (4.5 in)
2000181.9 mm (7.2 in)
2001127.0 mm (5.0 in)
2002153.7 mm (6.1 in)
200380.3 mm (3.2 in)
200473.7 mm (2.9 in)
200567.1 mm (2.6 in)
2006101.6 mm (4.0 in)
2007118.4 mm (4.7 in)
2008116.6 mm (4.6 in)
2009118.9 mm (4.7 in)
201081.3 mm (3.2 in)
2011143.8 mm (5.7 in)
2012148.6 mm (5.9 in)
2013203.2 mm (8.0 in)
201468.3 mm (2.7 in)
2015111.5 mm (4.4 in)
2016172.2 mm (6.8 in)
2017176.0 mm (6.9 in)
2018101.9 mm (4.0 in)
2019261.4 mm (10.3 in)
202077.2 mm (3.0 in)
2021122.4 mm (4.8 in)
202292.5 mm (3.6 in)
2023156.2 mm (6.1 in)
202478.7 mm (3.1 in)
2025125.0 mm (4.9 in)
202696.5 mm (3.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lake Arthur 7 SW by year The wettest five days of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 678.1 mm (26.7 in) in 1940, marked on the chart; the median year is 165.4 mm (6.5 in). 0200400600800192019401960198020002020Record: 678.1 mm (26.7 in) in 1940
The wettest five days of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 678.1 mm (26.7 in) in 1940, marked on the chart; the median year is 165.4 mm (6.5 in).
Wettest five days (Rx5day) at Lake Arthur 7 SW by year
YearWettest five days (Rx5day)
190158.4 mm (2.3 in)
1902114.8 mm (4.5 in)
1903200.9 mm (7.9 in)
1904114.3 mm (4.5 in)
1905250.5 mm (9.9 in)
1906149.4 mm (5.9 in)
1907273.0 mm (10.7 in)
1908141.5 mm (5.6 in)
190985.6 mm (3.4 in)
1910240.6 mm (9.5 in)
1911135.2 mm (5.3 in)
1912177.3 mm (7.0 in)
1913387.3 mm (15.2 in)
1914163.1 mm (6.4 in)
1915139.7 mm (5.5 in)
1916187.2 mm (7.4 in)
191787.9 mm (3.5 in)
1918126.0 mm (5.0 in)
1919202.1 mm (8.0 in)
1920171.9 mm (6.8 in)
1921124.5 mm (4.9 in)
1922169.7 mm (6.7 in)
1923105.4 mm (4.1 in)
192432.2 mm (1.3 in)
1925259.1 mm (10.2 in)
1926146.1 mm (5.8 in)
1927199.4 mm (7.9 in)
1928177.9 mm (7.0 in)
1929269.3 mm (10.6 in)
1930136.4 mm (5.4 in)
1931129.5 mm (5.1 in)
1932155.4 mm (6.1 in)
1933135.9 mm (5.4 in)
1934157.5 mm (6.2 in)
1935136.6 mm (5.4 in)
1936253.0 mm (10.0 in)
1937172.6 mm (6.8 in)
1938364.5 mm (14.4 in)
1939130.6 mm (5.1 in)
1940678.1 mm (26.7 in)
1941196.1 mm (7.7 in)
1942230.2 mm (9.1 in)
1943300.0 mm (11.8 in)
1944100.1 mm (3.9 in)
1945106.4 mm (4.2 in)
1946293.4 mm (11.6 in)
1947203.2 mm (8.0 in)
1948121.5 mm (4.8 in)
1949230.3 mm (9.1 in)
1950111.5 mm (4.4 in)
195178.5 mm (3.1 in)
1952238.0 mm (9.4 in)
1953273.3 mm (10.8 in)
195454.3 mm (2.1 in)
1955277.3 mm (10.9 in)
1956138.9 mm (5.5 in)
1957174.3 mm (6.9 in)
195897.7 mm (3.8 in)
1959232.7 mm (9.2 in)
1960127.9 mm (5.0 in)
1961165.4 mm (6.5 in)
1962277.1 mm (10.9 in)
1963149.2 mm (5.9 in)
1964183.1 mm (7.2 in)
1965151.2 mm (6.0 in)
1966186.7 mm (7.4 in)
1967348.5 mm (13.7 in)
1968157.7 mm (6.2 in)
1969175.7 mm (6.9 in)
1970161.8 mm (6.4 in)
1971349.0 mm (13.7 in)
1972132.1 mm (5.2 in)
1973244.1 mm (9.6 in)
1974138.7 mm (5.5 in)
1975109.7 mm (4.3 in)
197677.9 mm (3.1 in)
1977238.5 mm (9.4 in)
1978189.7 mm (7.5 in)
197995.3 mm (3.8 in)
1995150.4 mm (5.9 in)
1996218.2 mm (8.6 in)
1997148.4 mm (5.8 in)
1998400.4 mm (15.8 in)
1999145.3 mm (5.7 in)
2000228.6 mm (9.0 in)
2001204.7 mm (8.1 in)
2002254.6 mm (10.0 in)
2003133.9 mm (5.3 in)
2004140.5 mm (5.5 in)
200568.1 mm (2.7 in)
2006146.5 mm (5.8 in)
2007167.2 mm (6.6 in)
2008126.8 mm (5.0 in)
2009148.6 mm (5.9 in)
201093.3 mm (3.7 in)
2011167.2 mm (6.6 in)
2012198.4 mm (7.8 in)
2013241.3 mm (9.5 in)
2014124.5 mm (4.9 in)
2015183.2 mm (7.2 in)
2016438.4 mm (17.3 in)
2017326.9 mm (12.9 in)
2018142.0 mm (5.6 in)
2019263.2 mm (10.4 in)
2020103.9 mm (4.1 in)
2021185.0 mm (7.3 in)
2022109.6 mm (4.3 in)
2023170.7 mm (6.7 in)
2024120.2 mm (4.7 in)
2025188.3 mm (7.4 in)
2026175.7 mm (6.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lake Arthur 7 SW by year The longest dry spell of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 59 days in 1916, marked on the chart; the median year is 24 days. 0204060192019401960198020002020Record: 59 days in 1916
The longest dry spell of the year at Lake Arthur 7 SW, 1901 to 2026. The record is 59 days in 1916, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Lake Arthur 7 SW by year
YearLongest dry spell (CDD)
19018 days
190223 days
190329 days
190452 days
190535 days
190632 days
190728 days
190842 days
190922 days
191035 days
191123 days
191224 days
191324 days
191423 days
191540 days
191659 days
191743 days
191829 days
191919 days
192026 days
192132 days
192221 days
192310 days
192428 days
192528 days
192614 days
192725 days
192829 days
192939 days
193023 days
193129 days
193234 days
193318 days
193416 days
193538 days
193632 days
193732 days
193818 days
193919 days
194036 days
194121 days
194226 days
194323 days
194426 days
194514 days
194619 days
194728 days
194823 days
194920 days
195018 days
195124 days
195245 days
195351 days
195419 days
195538 days
195628 days
195722 days
195817 days
195921 days
196023 days
196130 days
196214 days
196330 days
196422 days
196528 days
196617 days
196728 days
196819 days
196929 days
197021 days
197131 days
197221 days
197318 days
197434 days
197528 days
197616 days
197714 days
197845 days
19798 days
199524 days
199617 days
199714 days
199836 days
199920 days
200017 days
200124 days
200234 days
200321 days
200417 days
200520 days
200631 days
200721 days
200820 days
200934 days
201041 days
201123 days
201226 days
201315 days
201422 days
201523 days
201631 days
201719 days
201819 days
201913 days
202014 days
202114 days
202235 days
202336 days
202448 days
202531 days
202623 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

57 years with a frost

Across 57 years with a frost, the median last spring frost at Lake Arthur 7 SW falls on 19 February and the median first autumn frost on 30 November, which leaves a median of 286 days between them.

Fitted over all years, the growing season changes by +1.6 days per decade at this station.

Frost dates and growing season at Lake Arthur 7 SW
MeasureMedian, all yearsEarliest periodRecent period (1957 to 2025)Recent against earliestFitted trend
Last spring frost19 Februaryn/a17 Februaryn/a-0.7 days per decade
First autumn frost30 Novembern/a6 Decembern/a+0.9 days per decade
Growing days286 daysn/a288 daysn/a+1.6 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

87 years, 1902 to 2025

A day with at least 114.6 mm (4.5 in) of rain is expected about once in 2 years. A day with at least 343.5 mm (13.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Lake Arthur 7 SW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years114.6 mm (4.5 in)
5 years162.1 mm (6.4 in)
10 years198.5 mm (7.8 in)
25 years250.8 mm (9.9 in)
50 years294.8 mm (11.6 in)
100 years343.5 mm (13.5 in)Longer than the 87 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 87 years of values from 1902 to 2025.

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: 355.6 mm (14.0 in) in 1938; 294.6 mm (11.6 in) in 1940; 285.8 mm (11.3 in) in 1967.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Lake Arthur 7 SW, at 1999. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1999 ran 0.5 C (1.0 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Lake Arthur 7 SW, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1999+0.5+1.0likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2008 to 2025 against 1961 to 1990

Over 2008 to 2025, Lake Arthur 7 SW had a mean temperature of 20.8 C (69.4 F) and 1,484.4 mm (58.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are New Orleans Audubon (United States, 254 km away), Port Arthur SE Tx Rgnl AP (United States, 121 km away) and St Bernard (United States, 284 km away).

Climate twins of Lake Arthur 7 SW: stations whose 1961 to 1990 climate is closest to its 2008 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
New Orleans AudubonUnited States254 km (158 mi)20.8 C (69.4 F)1,572.5 mm (61.9 in)0.63
Port Arthur SE Tx Rgnl APUnited States121 km (75 mi)20.3 C (68.5 F)1,450.6 mm (57.1 in)0.67
St BernardUnited States284 km (176 mi)20.6 C (69.0 F)1,601.4 mm (63.0 in)0.72

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 Lake Arthur 7 SW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lake Arthur 7 SW 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 (2026-10-15).