Built 2026-10-16 (16 October 2026)

Sibley Weather Records (USC00137664)

Record envelope, standing records and threshold days for Sibley (USC00137664), Iowa, United States, with 134 years of record.

Key Facts for Sibley

  • Sibley (USC00137664) is a weather station in Iowa, United States at 43.40 latitude and -95.75 longitude, 467 m (1,532 ft) above sea level.
  • The station reports from 1893 to 2026, 134 years of record.
  • 1,464 records set at Sibley still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Sibley set a daily record precipitation of 62.7 mm (2.5 in) on 7 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Iowa, United States, 43.40 latitude, -95.75 longitude.
  • Elevation: 467 m (1,532 ft).
  • Period of record: 1893 to 2026, 134 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

5 days at or beyond a record
Daily record high and record low at Sibley, with 2026 drawn through them The band shows the record high and record low for each calendar day at Sibley. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Sibley. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Sibley, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.8 C (64.0 F)-40.0 C (-40.0 F)10.0 C (50.0 F)-28.9 C (-20.0 F)
Feb20.0 C (68.0 F)-40.0 C (-40.0 F)16.7 C (62.1 F)-21.7 C (-7.1 F)
Mar30.0 C (86.0 F)-34.4 C (-29.9 F)30.0 C (86.0 F)-21.7 C (-7.1 F)
Apr34.4 C (93.9 F)-17.8 C (0.0 F)29.4 C (84.9 F)-7.8 C (18.0 F)
May37.8 C (100.0 F)-9.4 C (15.1 F)32.8 C (91.0 F)-1.7 C (28.9 F)
Jun38.9 C (102.0 F)-1.1 C (30.0 F)33.3 C (91.9 F)8.3 C (46.9 F)
Jul42.2 C (108.0 F)2.8 C (37.0 F)33.9 C (93.0 F)11.7 C (53.1 F)
Aug41.1 C (106.0 F)-1.1 C (30.0 F)32.2 C (90.0 F)11.1 C (52.0 F)
Sep38.9 C (102.0 F)-9.4 C (15.1 F)33.9 C (93.0 F)10.6 C (51.1 F)
Oct33.9 C (93.0 F)-16.1 C (3.0 F)28.3 C (82.9 F)3.9 C (39.0 F)
Nov25.0 C (77.0 F)-28.9 C (-20.0 F)n/an/a
Dec18.9 C (66.0 F)-35.6 C (-32.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Sibley by the year they were set 1,464 records at Sibley still stand. 1936 holds the most, with 34. 0102030401893: 131894: 161895: 91896: 131897: 211898: 121899: 281900: 161901: 211902: 171903: 61904: 121905: 181906: 51907: 101908: 81909: 221910: 171911: 201912: 161913: 231914: 91915: 131916: 71917: 241918: 151919: 41935: 51936: 341937: 161938: 51939: 261940: 181941: 141942: 181943: 101944: 151945: 161946: 121947: 231948: 71949: 111950: 141951: 101952: 101953: 71954: 151955: 211956: 151957: 41958: 171959: 181960: 121961: 31962: 221963: 151964: 171965: 101966: 71967: 101968: 151969: 141970: 111971: 71972: 61973: 121974: 121975: 41976: 61977: 161978: 41979: 111980: 61981: 121982: 71983: 121984: 71985: 171986: 61987: 111988: 161989: 121990: 91991: 201992: 201993: 121994: 41995: 71996: 101997: 161998: 101999: 92000: 182001: 82002: 92003: 62004: 52005: 102006: 52008: 32009: 62010: 62011: 52012: 212013: 162014: 122015: 92016: 52017: 162018: 202019: 102020: 232021: 62022: 112023: 122024: 92025: 112026: 91893190519171944195619681980199220042017
1,464 records at Sibley still stand. 1936 holds the most, with 34.
Standing records at Sibley by the year they were set
Year setStanding records
189313
189416
18959
189613
189721
189812
189928
190016
190121
190217
19036
190412
190518
19065
190710
19088
190922
191017
191120
191216
191323
19149
191513
19167
191724
191815
19194
19355
193634
193716
19385
193926
194018
194114
194218
194310
194415
194516
194612
194723
19487
194911
195014
195110
195210
19537
195415
195521
195615
19574
195817
195918
196012
19613
196222
196315
196417
196510
19667
196710
196815
196914
197011
19717
19726
197312
197412
19754
19766
197716
19784
197911
19806
198112
19827
198312
19847
198517
19866
198711
198816
198912
19909
199120
199220
199312
19944
19957
199610
199716
199810
19999
200018
20018
20029
20036
20045
200510
20065
20083
20096
20106
20115
201221
201316
201412
20159
20165
201716
201820
201910
202023
20216
202211
202312
20249
202511
20269

All-Time Record Progression

3 new records
When Sibley set new all-time records 3 all-time records were set at Sibley between 2 March 1951 and 18 February 1962. Each dot is a new record. Record daily snowfallRecord high minimum temperature2 March 1951: Record daily snowfall 35.6 cm (14.0 in)26 August 1955: Record high minimum temperature 25.6 C (78.1 F)18 February 1962: Record daily snowfall 53.3 cm (21.0 in)19551960
3 all-time records were set at Sibley between 2 March 1951 and 18 February 1962. Each dot is a new record.
When Sibley set new all-time records
DateKindDetail
1951-03-02Record daily snowfallRecord daily snowfall 35.6 cm (14.0 in)
1955-08-26Record high minimum temperatureRecord high minimum temperature 25.6 C (78.1 F)
1962-02-18Record daily snowfallRecord daily snowfall 53.3 cm (21.0 in)

Wettest Day of Each Month

Sep: 153.2 mm (6.0 in)
Record daily precipitation for each month at Sibley The wettest day on record for each calendar month at Sibley. The most was 153.2 mm (6.0 in) on 22 September 1895. 050100150200 Jan: 44.7 mm (1.8 in), 4 January 2023 Jan Feb: 63.5 mm (2.5 in), 18 February 1962 Feb Mar: 59.7 mm (2.4 in), 25 March 2024 Mar Apr: 78.7 mm (3.1 in), 7 April 2006 Apr May: 84.8 mm (3.3 in), 31 May 1959 May Jun: 129.8 mm (5.1 in), 22 June 2024 Jun Jul: 111.8 mm (4.4 in), 22 July 2010 Jul Aug: 133.1 mm (5.2 in), 22 August 1975 Aug Sep: 153.2 mm (6.0 in), 22 September 1895 Sep Oct: 64.3 mm (2.5 in), 23 October 2008 Oct Nov: 52.6 mm (2.1 in), 16 November 1918 Nov Dec: 38.9 mm (1.5 in), 28 December 1982 Dec
The wettest day on record for each calendar month at Sibley. The most was 153.2 mm (6.0 in) on 22 September 1895.
Record daily precipitation for each month at Sibley
MonthRecord daily precipitation (mm)Date
Jan44.7 mm (1.8 in)4 January 2023
Feb63.5 mm (2.5 in)18 February 1962
Mar59.7 mm (2.4 in)25 March 2024
Apr78.7 mm (3.1 in)7 April 2006
May84.8 mm (3.3 in)31 May 1959
Jun129.8 mm (5.1 in)22 June 2024
Jul111.8 mm (4.4 in)22 July 2010
Aug133.1 mm (5.2 in)22 August 1975
Sep153.2 mm (6.0 in)22 September 1895
Oct64.3 mm (2.5 in)23 October 2008
Nov52.6 mm (2.1 in)16 November 1918
Dec38.9 mm (1.5 in)28 December 1982

Period of Record Coverage

1893 to 2026
Days with data per year at Sibley 118 years of record at Sibley, 1893 to 2026. 8 years have data for under 90 percent of days and are left out of rankings: 1893, 1895, 1916, 1919, 1935, 2006, 2009, 2026. 1893: 219 of 365 days1894: 358 of 365 days1895: 205 of 365 days1896: 334 of 366 days1897: 346 of 365 days1898: 349 of 365 days1899: 358 of 365 days1900: 365 of 365 days1901: 343 of 365 days1902: 352 of 365 days1903: 349 of 365 days1904: 354 of 366 days1905: 359 of 365 days1906: 360 of 365 days1907: 357 of 365 days1908: 363 of 366 days1909: 358 of 365 days1910: 361 of 365 days1911: 363 of 365 days1912: 361 of 366 days1913: 357 of 365 days1914: 359 of 365 days1915: 357 of 365 days1916: 226 of 366 days1917: 363 of 365 days1918: 350 of 365 days1919: 112 of 365 days1935: 239 of 365 days1936: 355 of 366 days1937: 365 of 365 days1938: 365 of 365 days1939: 364 of 365 days1940: 365 of 366 days1941: 364 of 365 days1942: 365 of 365 days1943: 364 of 365 days1944: 364 of 366 days1945: 365 of 365 days1946: 364 of 365 days1947: 365 of 365 days1948: 364 of 366 days1949: 364 of 365 days1950: 363 of 365 days1951: 364 of 365 days1952: 365 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 363 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: 364 of 365 days1967: 364 of 365 days1968: 364 of 366 days1969: 364 of 365 days1970: 333 of 365 days1971: 335 of 365 days1972: 335 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 335 of 366 days1977: 365 of 365 days1978: 334 of 365 days1979: 365 of 365 days1980: 335 of 366 days1981: 365 of 365 days1982: 361 of 365 days1983: 356 of 365 days1984: 357 of 366 days1985: 346 of 365 days1986: 351 of 365 days1987: 337 of 365 days1988: 350 of 366 days1989: 346 of 365 days1990: 351 of 365 days1991: 362 of 365 days1992: 361 of 366 days1993: 361 of 365 days1994: 365 of 365 days1995: 364 of 365 days1996: 365 of 366 days1997: 365 of 365 days1998: 363 of 365 days1999: 363 of 365 days2000: 356 of 366 days2001: 361 of 365 days2002: 333 of 365 days2003: 363 of 365 days2004: 349 of 366 days2005: 353 of 365 days2006: 250 of 365 days2008: 356 of 366 days2009: 269 of 365 days2010: 344 of 365 days2011: 357 of 365 days2012: 356 of 366 days2013: 359 of 365 days2014: 360 of 365 days2015: 359 of 365 days2016: 363 of 366 days2017: 358 of 365 days2018: 362 of 365 days2019: 355 of 365 days2020: 365 of 366 days2021: 354 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 365 of 366 days2025: 365 of 365 days2026: 281 of 365 days19051935195019651980199520102025
118 years of record at Sibley, 1893 to 2026. 8 years have data for under 90 percent of days and are left out of rankings: 1893, 1895, 1916, 1919, 1935, 2006, 2009, 2026.
Days with data per year at Sibley
YearDays with dataShare of yearComplete
189321960%No
189435898%Yes
189520556%No
189633491%Yes
189734695%Yes
189834996%Yes
189935898%Yes
1900365100%Yes
190134394%Yes
190235296%Yes
190334996%Yes
190435497%Yes
190535998%Yes
190636099%Yes
190735798%Yes
190836399%Yes
190935898%Yes
191036199%Yes
191136399%Yes
191236199%Yes
191335798%Yes
191435998%Yes
191535798%Yes
191622662%No
191736399%Yes
191835096%Yes
191911231%No
193523965%No
193635597%Yes
1937365100%Yes
1938365100%Yes
1939364100%Yes
1940365100%Yes
1941364100%Yes
1942365100%Yes
1943364100%Yes
194436499%Yes
1945365100%Yes
1946364100%Yes
1947365100%Yes
194836499%Yes
1949364100%Yes
195036399%Yes
1951364100%Yes
1952365100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
195636399%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966364100%Yes
1967364100%Yes
196836499%Yes
1969364100%Yes
197033391%Yes
197133592%Yes
197233592%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
197633592%Yes
1977365100%Yes
197833492%Yes
1979365100%Yes
198033592%Yes
1981365100%Yes
198236199%Yes
198335698%Yes
198435798%Yes
198534695%Yes
198635196%Yes
198733792%Yes
198835096%Yes
198934695%Yes
199035196%Yes
199136299%Yes
199236199%Yes
199336199%Yes
1994365100%Yes
1995364100%Yes
1996365100%Yes
1997365100%Yes
199836399%Yes
199936399%Yes
200035697%Yes
200136199%Yes
200233391%Yes
200336399%Yes
200434995%Yes
200535397%Yes
200625068%No
200835697%Yes
200926974%No
201034494%Yes
201135798%Yes
201235697%Yes
201335998%Yes
201436099%Yes
201535998%Yes
201636399%Yes
201735898%Yes
201836299%Yes
201935597%Yes
2020365100%Yes
202135497%Yes
2022365100%Yes
2023365100%Yes
2024365100%Yes
2025365100%Yes
202628177%No

Latest Records

20
Latest records at Sibley
DateStationRecordValueBeat old record byOld record stoodSignificance
7 September 2026Sibley, USdaily rain (Provisional)62.7 mm (2.5 in)9.1 mm (0.36 in)61 years33 of 100 (Routine)
5 September 2026Sibley, USdaily high min (Tie, Provisional)21.7 C (71.1 F)tie125 years10 of 100 (Routine)
4 September 2026Sibley, USdaily high min (Tie, Provisional)20.6 C (69.1 F)tie79 years8 of 100 (Routine)
27 July 2026Sibley, USdaily high min23.3 C (73.9 F)0.5 C (0.9 F)131 years41 of 100 (Notable)
27 April 2026Sibley, USdaily rain26.4 mm (1.0 in)4.0 mm (0.16 in)61 years32 of 100 (Routine)
31 March 2026Sibley, USdaily high max28.3 C (82.9 F)3.3 C (5.9 F)80 years38 of 100 (Notable)
22 March 2026Sibley, USmonthly high max30.0 C (86.0 F)0.6 C (1.1 F)115 years50 of 100 (Notable)
21 March 2026Sibley, USdaily high min7.8 C (46.0 F)0.6 C (1.1 F)88 years36 of 100 (Notable)
21 March 2026Sibley, USdaily high max (Tie)22.8 C (73.0 F)tie87 years9 of 100 (Routine)
17 March 2026Sibley, USdaily low max-10.6 C (12.9 F)2.3 C (4.1 F)124 years42 of 100 (Notable)
9 March 2026Sibley, USdaily high max21.7 C (71.1 F)3.9 C (7.0 F)25 years22 of 100 (Routine)
15 February 2026Sibley, USdaily high max16.7 C (62.1 F)3.9 C (7.0 F)112 years45 of 100 (Notable)
24 January 2026Sibley, USdaily low max-22.2 C (-8.0 F)2.8 C (5.0 F)128 years43 of 100 (Notable)
6 January 2026Sibley, USdaily high min (Tie)-2.8 C (27.0 F)tie39 years5 of 100 (Routine)
5 January 2026Sibley, USdaily high min-3.3 C (26.1 F)0.6 C (1.1 F)78 years33 of 100 (Routine)
29 December 2025Sibley, USdaily snowfall (Tie)10.2 cm (4.0 in)tie10 years3 of 100 (Routine)
28 December 2025Sibley, USdaily high max (Tie)8.3 C (46.9 F)tie67 years7 of 100 (Routine)
27 December 2025Sibley, USdaily high min (Tie)0.0 C (32.0 F)tie0 years2 of 100 (Routine)
25 December 2025Sibley, USdaily high min (Tie)-0.6 C (30.9 F)tie71 years7 of 100 (Routine)
7 December 2025Sibley, USdaily snowfall9.9 cm (3.9 in)2.8 cm (1.1 in)67 years37 of 100 (Notable)

Climate Trend

99 complete years, 1894 to 2025
Annual mean temperature at Sibley as warming stripes, 1894 to 2025 One stripe for each of 99 complete years at Sibley, 1894 to 2025. Blue stripes are years cooler than the station's own mean of 7.1 C (44.7 F); red stripes are warmer. The coolest year was 1993, at 4.7 C (40.4 F), and the warmest was 2024, at 9.2 C (48.5 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1894: 7.7 C, +0.6 C from the station mean1897: 6.4 C, -0.7 C from the station mean1898: 7.1 C, 0.0 C from the station mean1899: 6.4 C, -0.7 C from the station mean1900: 8.3 C, +1.2 C from the station mean1901: 8.2 C, +1.1 C from the station mean1902: 7.2 C, +0.1 C from the station mean1903: 6.1 C, -1.0 C from the station mean1904: 5.5 C, -1.5 C from the station mean1905: 6.2 C, -0.9 C from the station mean1906: 6.9 C, -0.2 C from the station mean1907: 5.8 C, -1.3 C from the station mean1908: 7.2 C, +0.1 C from the station mean1909: 5.9 C, -1.2 C from the station mean1910: 7.0 C, -0.1 C from the station mean1911: 7.0 C, -0.1 C from the station mean1912: 5.7 C, -1.4 C from the station mean1913: 7.6 C, +0.5 C from the station mean1914: 7.4 C, +0.3 C from the station mean1915: 6.6 C, -0.5 C from the station mean1917: 4.7 C, -2.4 C from the station mean1918: 7.1 C, 0.0 C from the station mean1936: 6.9 C, -0.1 C from the station mean1937: 6.4 C, -0.7 C from the station mean1938: 8.3 C, +1.2 C from the station mean1939: 8.5 C, +1.4 C from the station mean1940: 6.9 C, -0.2 C from the station mean1941: 8.4 C, +1.3 C from the station mean1942: 7.5 C, +0.4 C from the station mean1943: 7.0 C, -0.1 C from the station mean1944: 7.9 C, +0.8 C from the station mean1945: 6.8 C, -0.3 C from the station mean1946: 8.1 C, +1.0 C from the station mean1947: 7.5 C, +0.4 C from the station mean1948: 7.7 C, +0.6 C from the station mean1949: 7.8 C, +0.7 C from the station mean1950: 5.4 C, -1.7 C from the station mean1951: 5.2 C, -1.9 C from the station mean1952: 7.5 C, +0.4 C from the station mean1953: 8.3 C, +1.2 C from the station mean1954: 8.4 C, +1.4 C from the station mean1955: 7.9 C, +0.8 C from the station mean1956: 7.2 C, +0.1 C from the station mean1957: 7.5 C, +0.4 C from the station mean1958: 8.3 C, +1.2 C from the station mean1959: 7.7 C, +0.7 C from the station mean1960: 7.3 C, +0.2 C from the station mean1961: 7.3 C, +0.2 C from the station mean1962: 7.4 C, +0.3 C from the station mean1963: 8.5 C, +1.4 C from the station mean1964: 8.6 C, +1.5 C from the station mean1965: 7.2 C, +0.1 C from the station mean1966: 7.1 C, 0.0 C from the station mean1967: 7.5 C, +0.4 C from the station mean1968: 8.3 C, +1.2 C from the station mean1969: 7.0 C, -0.1 C from the station mean1973: 8.8 C, +1.7 C from the station mean1974: 8.3 C, +1.3 C from the station mean1975: 7.5 C, +0.4 C from the station mean1979: 6.2 C, -0.9 C from the station mean1981: 8.4 C, +1.3 C from the station mean1982: 5.4 C, -1.7 C from the station mean1983: 6.2 C, -0.8 C from the station mean1984: 6.0 C, -1.1 C from the station mean1985: 5.5 C, -1.6 C from the station mean1986: 6.8 C, -0.3 C from the station mean1988: 6.8 C, -0.3 C from the station mean1989: 5.9 C, -1.2 C from the station mean1990: 7.3 C, +0.2 C from the station mean1991: 6.9 C, -0.2 C from the station mean1992: 6.4 C, -0.7 C from the station mean1993: 4.7 C, -2.4 C from the station mean1994: 6.1 C, -1.0 C from the station mean1995: 6.1 C, -1.0 C from the station mean1996: 4.7 C, -2.4 C from the station mean1997: 5.9 C, -1.2 C from the station mean1998: 8.2 C, +1.1 C from the station mean1999: 7.8 C, +0.7 C from the station mean2000: 6.8 C, -0.3 C from the station mean2001: 7.2 C, +0.1 C from the station mean2003: 6.6 C, -0.5 C from the station mean2005: 7.5 C, +0.4 C from the station mean2008: 5.3 C, -1.8 C from the station mean2010: 7.2 C, +0.1 C from the station mean2011: 6.7 C, -0.4 C from the station mean2012: 9.1 C, +2.0 C from the station mean2013: 6.1 C, -1.0 C from the station mean2014: 5.6 C, -1.5 C from the station mean2015: 7.9 C, +0.8 C from the station mean2016: 8.5 C, +1.4 C from the station mean2017: 8.0 C, +0.9 C from the station mean2018: 6.3 C, -0.8 C from the station mean2019: 5.7 C, -1.4 C from the station mean2020: 7.6 C, +0.5 C from the station mean2021: 8.2 C, +1.1 C from the station mean2022: 7.0 C, -0.1 C from the station mean2023: 8.2 C, +1.1 C from the station mean2024: 9.2 C, +2.1 C from the station mean2025: 8.1 C, +1.0 C from the station mean18941900191019201930194019501960197019801990200020102020
One stripe for each of 99 complete years at Sibley, 1894 to 2025. Blue stripes are years cooler than the station's own mean of 7.1 C (44.7 F); red stripes are warmer. The coolest year was 1993, at 4.7 C (40.4 F), and the warmest was 2024, at 9.2 C (48.5 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Sibley as warming stripes, 1894 to 2025
YearAnnual mean temperatureDifference from the station mean
18947.7 C+0.60 C
18976.4 C-0.71 C
18987.1 C+0.01 C
18996.4 C-0.68 C
19008.3 C+1.22 C
19018.2 C+1.07 C
19027.2 C+0.11 C
19036.1 C-0.95 C
19045.5 C-1.54 C
19056.2 C-0.89 C
19066.9 C-0.22 C
19075.8 C-1.33 C
19087.2 C+0.10 C
19095.9 C-1.19 C
19107.0 C-0.09 C
19117.0 C-0.13 C
19125.7 C-1.38 C
19137.6 C+0.55 C
19147.4 C+0.32 C
19156.6 C-0.51 C
19174.7 C-2.39 C
19187.1 C+0.02 C
19366.9 C-0.14 C
19376.4 C-0.68 C
19388.3 C+1.19 C
19398.5 C+1.37 C
19406.9 C-0.17 C
19418.4 C+1.32 C
19427.5 C+0.41 C
19437.0 C-0.13 C
19447.9 C+0.81 C
19456.8 C-0.27 C
19468.1 C+1.03 C
19477.5 C+0.44 C
19487.7 C+0.63 C
19497.8 C+0.72 C
19505.4 C-1.71 C
19515.2 C-1.90 C
19527.5 C+0.43 C
19538.3 C+1.22 C
19548.4 C+1.36 C
19557.9 C+0.81 C
19567.2 C+0.10 C
19577.5 C+0.38 C
19588.3 C+1.23 C
19597.7 C+0.66 C
19607.3 C+0.22 C
19617.3 C+0.19 C
19627.4 C+0.29 C
19638.5 C+1.40 C
19648.6 C+1.52 C
19657.2 C+0.13 C
19667.1 C+0.03 C
19677.5 C+0.42 C
19688.3 C+1.23 C
19697.0 C-0.11 C
19738.8 C+1.72 C
19748.3 C+1.26 C
19757.5 C+0.37 C
19796.2 C-0.85 C
19818.4 C+1.35 C
19825.4 C-1.69 C
19836.2 C-0.84 C
19846.0 C-1.09 C
19855.5 C-1.55 C
19866.8 C-0.30 C
19886.8 C-0.30 C
19895.9 C-1.17 C
19907.3 C+0.25 C
19916.9 C-0.21 C
19926.4 C-0.72 C
19934.7 C-2.42 C
19946.1 C-0.95 C
19956.1 C-0.99 C
19964.7 C-2.39 C
19975.9 C-1.18 C
19988.2 C+1.15 C
19997.8 C+0.73 C
20006.8 C-0.30 C
20017.2 C+0.08 C
20036.6 C-0.46 C
20057.5 C+0.38 C
20085.3 C-1.79 C
20107.2 C+0.07 C
20116.7 C-0.40 C
20129.1 C+1.98 C
20136.1 C-1.02 C
20145.6 C-1.51 C
20157.9 C+0.78 C
20168.5 C+1.41 C
20178.0 C+0.87 C
20186.3 C-0.75 C
20195.7 C-1.41 C
20207.6 C+0.49 C
20218.2 C+1.11 C
20227.0 C-0.08 C
20238.2 C+1.15 C
20249.2 C+2.08 C
20258.1 C+1.01 C

The fitted trend in annual mean temperature here over 1894 to 2025 is 0.02 C (-0.04 to 0.07) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.07 to 0.12) per decade. The slope is a straight line fitted to 99 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Sibley
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.02 C (-0.04 to 0.07) per decade0.03 F (-0.07 to 0.12) per decade1894 to 202599Not clearly different from zero
Mean daily maximum-0.05 C (-0.11 to 0.02) per decade-0.08 F (-0.20 to 0.04) per decade1894 to 202599Not clearly different from zero
Mean daily minimum0.08 C (0.03 to 0.13) per decade0.14 F (0.05 to 0.23) per decade1894 to 202599Rise

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

1893 to 2026
Yearly extremes at Sibley: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.2 C (108.0 F)193635.6 C (96.1 F)118
Coldest night (TNn)-40.0 C (-40.0 F)1899-30.6 C (-23.1 F)118
Wettest day (Rx1day)153.2 mm (6.0 in)189559.4 mm (2.3 in)119
Wettest five days (Rx5day)296.1 mm (11.7 in)197984.9 mm (3.3 in)119
Longest dry spell (CDD)74 days193927 days119

Hottest day (TXx)

Hottest day (TXx) at Sibley by year The hottest day of the year at Sibley, 1893 to 2026. The record is 42.2 C (108.0 F) in 1936, marked on the chart; the median year is 35.6 C (96.1 F). 203040501900192019401960198020002020Record: 42.2 C (108.0 F) in 1936
The hottest day of the year at Sibley, 1893 to 2026. The record is 42.2 C (108.0 F) in 1936, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Sibley by year
YearHottest day (TXx)
189333.9 C (93.0 F)
189438.9 C (102.0 F)
189533.3 C (91.9 F)
189634.4 C (93.9 F)
189736.7 C (98.1 F)
189836.7 C (98.1 F)
189937.2 C (99.0 F)
190036.7 C (98.1 F)
190141.1 C (106.0 F)
190234.4 C (93.9 F)
190331.7 C (89.1 F)
190432.2 C (90.0 F)
190535.0 C (95.0 F)
190636.1 C (97.0 F)
190735.0 C (95.0 F)
190835.0 C (95.0 F)
190934.4 C (93.9 F)
191034.4 C (93.9 F)
191138.3 C (100.9 F)
191235.6 C (96.1 F)
191338.9 C (102.0 F)
191437.8 C (100.0 F)
191531.7 C (89.1 F)
191635.0 C (95.0 F)
191736.7 C (98.1 F)
191834.4 C (93.9 F)
191920.6 C (69.1 F)
193538.3 C (100.9 F)
193642.2 C (108.0 F)
193737.2 C (99.0 F)
193835.0 C (95.0 F)
193937.8 C (100.0 F)
194038.9 C (102.0 F)
194137.2 C (99.0 F)
194237.2 C (99.0 F)
194333.9 C (93.0 F)
194435.6 C (96.1 F)
194535.6 C (96.1 F)
194635.0 C (95.0 F)
194739.4 C (102.9 F)
194835.6 C (96.1 F)
194935.6 C (96.1 F)
195032.2 C (90.0 F)
195131.7 C (89.1 F)
195234.4 C (93.9 F)
195338.9 C (102.0 F)
195436.7 C (98.1 F)
195537.2 C (99.0 F)
195637.2 C (99.0 F)
195736.7 C (98.1 F)
195835.6 C (96.1 F)
195936.7 C (98.1 F)
196035.6 C (96.1 F)
196133.9 C (93.0 F)
196233.3 C (91.9 F)
196335.0 C (95.0 F)
196435.0 C (95.0 F)
196536.7 C (98.1 F)
196638.9 C (102.0 F)
196736.1 C (97.0 F)
196836.7 C (98.1 F)
196935.0 C (95.0 F)
197036.7 C (98.1 F)
197135.0 C (95.0 F)
197233.9 C (93.0 F)
197336.1 C (97.0 F)
197438.9 C (102.0 F)
197535.6 C (96.1 F)
197638.9 C (102.0 F)
197736.1 C (97.0 F)
197835.0 C (95.0 F)
197937.2 C (99.0 F)
198037.2 C (99.0 F)
198135.6 C (96.1 F)
198236.1 C (97.0 F)
198335.6 C (96.1 F)
198435.0 C (95.0 F)
198537.8 C (100.0 F)
198631.7 C (89.1 F)
198736.1 C (97.0 F)
198840.0 C (104.0 F)
198936.1 C (97.0 F)
199036.7 C (98.1 F)
199133.3 C (91.9 F)
199232.2 C (90.0 F)
199331.7 C (89.1 F)
199432.8 C (91.0 F)
199536.7 C (98.1 F)
199633.9 C (93.0 F)
199733.9 C (93.0 F)
199834.4 C (93.9 F)
199934.4 C (93.9 F)
200036.7 C (98.1 F)
200135.0 C (95.0 F)
200235.6 C (96.1 F)
200335.6 C (96.1 F)
200433.3 C (91.9 F)
200533.3 C (91.9 F)
200634.4 C (93.9 F)
2007n/a
200833.3 C (91.9 F)
200932.2 C (90.0 F)
201035.0 C (95.0 F)
201136.7 C (98.1 F)
201236.7 C (98.1 F)
201337.8 C (100.0 F)
201432.2 C (90.0 F)
201535.0 C (95.0 F)
201636.1 C (97.0 F)
201735.0 C (95.0 F)
201837.8 C (100.0 F)
201935.6 C (96.1 F)
202036.7 C (98.1 F)
202136.1 C (97.0 F)
202237.8 C (100.0 F)
202336.1 C (97.0 F)
202435.6 C (96.1 F)
202536.1 C (97.0 F)
202633.9 C (93.0 F)

Coldest night (TNn)

Coldest night (TNn) at Sibley by year The coldest night of the year at Sibley, 1893 to 2026. The record is -40.0 C (-40.0 F) in 1899, marked on the chart; the median year is -30.6 C (-23.1 F). -40-35-30-25-201900192019401960198020002020Record: -40.0 C (-40.0 F) in 1899
The coldest night of the year at Sibley, 1893 to 2026. The record is -40.0 C (-40.0 F) in 1899, marked on the chart; the median year is -30.6 C (-23.1 F).
Coldest night (TNn) at Sibley by year
YearColdest night (TNn)
1893-29.4 C (-20.9 F)
1894-34.4 C (-29.9 F)
1895-36.1 C (-33.0 F)
1896-25.0 C (-13.0 F)
1897-31.7 C (-25.1 F)
1898-29.4 C (-20.9 F)
1899-40.0 C (-40.0 F)
1900-28.9 C (-20.0 F)
1901-33.9 C (-29.0 F)
1902-29.4 C (-20.9 F)
1903-32.8 C (-27.0 F)
1904-33.3 C (-27.9 F)
1905-37.8 C (-36.0 F)
1906-28.3 C (-18.9 F)
1907-30.6 C (-23.1 F)
1908-27.2 C (-17.0 F)
1909-31.1 C (-24.0 F)
1910-29.4 C (-20.9 F)
1911-36.1 C (-33.0 F)
1912-40.0 C (-40.0 F)
1913-29.4 C (-20.9 F)
1914-32.8 C (-27.0 F)
1915-29.4 C (-20.9 F)
1916-33.3 C (-27.9 F)
1917-37.2 C (-35.0 F)
1918-36.7 C (-34.1 F)
1919-31.7 C (-25.1 F)
1935-26.7 C (-16.1 F)
1936-37.2 C (-35.0 F)
1937-32.2 C (-26.0 F)
1938-29.4 C (-20.9 F)
1939-30.0 C (-22.0 F)
1940-30.6 C (-23.1 F)
1941-26.1 C (-15.0 F)
1942-33.9 C (-29.0 F)
1943-34.4 C (-29.9 F)
1944-28.9 C (-20.0 F)
1945-28.9 C (-20.0 F)
1946-31.1 C (-24.0 F)
1947-28.9 C (-20.0 F)
1948-34.4 C (-29.9 F)
1949-35.0 C (-31.0 F)
1950-33.3 C (-27.9 F)
1951-33.3 C (-27.9 F)
1952-33.9 C (-29.0 F)
1953-31.1 C (-24.0 F)
1954-30.6 C (-23.1 F)
1955-30.6 C (-23.1 F)
1956-32.8 C (-27.0 F)
1957-28.3 C (-18.9 F)
1958-33.3 C (-27.9 F)
1959-33.9 C (-29.0 F)
1960-31.1 C (-24.0 F)
1961-31.7 C (-25.1 F)
1962-37.8 C (-36.0 F)
1963-30.6 C (-23.1 F)
1964-30.6 C (-23.1 F)
1965-28.9 C (-20.0 F)
1966-33.3 C (-27.9 F)
1967-31.7 C (-25.1 F)
1968-30.0 C (-22.0 F)
1969-31.1 C (-24.0 F)
1970-28.9 C (-20.0 F)
1971-28.9 C (-20.0 F)
1972-34.4 C (-29.9 F)
1973-29.4 C (-20.9 F)
1974-33.3 C (-27.9 F)
1975-30.0 C (-22.0 F)
1976-28.9 C (-20.0 F)
1977-31.1 C (-24.0 F)
1978-30.0 C (-22.0 F)
1979-31.7 C (-25.1 F)
1980-29.4 C (-20.9 F)
1981-32.2 C (-26.0 F)
1982-34.4 C (-29.9 F)
1983-33.9 C (-29.0 F)
1984-34.4 C (-29.9 F)
1985-32.2 C (-26.0 F)
1986-28.3 C (-18.9 F)
1987-30.0 C (-22.0 F)
1988-33.9 C (-29.0 F)
1989-33.9 C (-29.0 F)
1990-31.7 C (-25.1 F)
1991-27.8 C (-18.0 F)
1992-26.1 C (-15.0 F)
1993-31.1 C (-24.0 F)
1994-32.8 C (-27.0 F)
1995-28.9 C (-20.0 F)
1996-34.4 C (-29.9 F)
1997-30.0 C (-22.0 F)
1998-27.2 C (-17.0 F)
1999-31.1 C (-24.0 F)
2000-28.9 C (-20.0 F)
2001-28.3 C (-18.9 F)
2002-22.2 C (-8.0 F)
2003-27.8 C (-18.0 F)
2004-30.0 C (-22.0 F)
2005-28.9 C (-20.0 F)
2006-26.7 C (-16.1 F)
2007n/a
2008-31.7 C (-25.1 F)
2009-33.3 C (-27.9 F)
2010-35.0 C (-31.0 F)
2011-30.0 C (-22.0 F)
2012-26.1 C (-15.0 F)
2013-26.7 C (-16.1 F)
2014-28.9 C (-20.0 F)
2015-26.1 C (-15.0 F)
2016-31.7 C (-25.1 F)
2017-28.9 C (-20.0 F)
2018-32.2 C (-26.0 F)
2019-32.8 C (-27.0 F)
2020-27.8 C (-18.0 F)
2021-30.0 C (-22.0 F)
2022-28.9 C (-20.0 F)
2023-25.0 C (-13.0 F)
2024-29.4 C (-20.9 F)
2025-28.9 C (-20.0 F)
2026-28.9 C (-20.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Sibley by year The wettest day of the year at Sibley, 1893 to 2026. The record is 153.2 mm (6.0 in) in 1895, marked on the chart; the median year is 59.4 mm (2.3 in). 0501001502001900192019401960198020002020Record: 153.2 mm (6.0 in) in 1895
The wettest day of the year at Sibley, 1893 to 2026. The record is 153.2 mm (6.0 in) in 1895, marked on the chart; the median year is 59.4 mm (2.3 in).
Wettest day (Rx1day) at Sibley by year
YearWettest day (Rx1day)
189331.8 mm (1.3 in)
189452.3 mm (2.1 in)
1895153.2 mm (6.0 in)
1896104.9 mm (4.1 in)
189774.7 mm (2.9 in)
189854.6 mm (2.1 in)
189952.1 mm (2.1 in)
1900101.6 mm (4.0 in)
190130.7 mm (1.2 in)
190291.4 mm (3.6 in)
190345.0 mm (1.8 in)
190444.7 mm (1.8 in)
190553.1 mm (2.1 in)
190664.3 mm (2.5 in)
190732.3 mm (1.3 in)
190871.4 mm (2.8 in)
190973.7 mm (2.9 in)
191033.0 mm (1.3 in)
191162.7 mm (2.5 in)
191253.1 mm (2.1 in)
191339.9 mm (1.6 in)
191486.9 mm (3.4 in)
191541.9 mm (1.6 in)
191628.4 mm (1.1 in)
191761.0 mm (2.4 in)
191852.6 mm (2.1 in)
191925.4 mm (1.0 in)
193569.3 mm (2.7 in)
193639.6 mm (1.6 in)
193759.4 mm (2.3 in)
193869.9 mm (2.8 in)
193935.6 mm (1.4 in)
194046.5 mm (1.8 in)
194138.1 mm (1.5 in)
194293.0 mm (3.7 in)
194356.9 mm (2.2 in)
194478.7 mm (3.1 in)
194531.8 mm (1.3 in)
194668.6 mm (2.7 in)
194771.6 mm (2.8 in)
194836.8 mm (1.4 in)
194953.6 mm (2.1 in)
195095.5 mm (3.8 in)
195139.4 mm (1.6 in)
195237.3 mm (1.5 in)
195395.3 mm (3.8 in)
195495.3 mm (3.8 in)
195560.5 mm (2.4 in)
195638.9 mm (1.5 in)
195766.8 mm (2.6 in)
195840.1 mm (1.6 in)
195984.8 mm (3.3 in)
196074.4 mm (2.9 in)
196141.7 mm (1.6 in)
196293.2 mm (3.7 in)
196346.7 mm (1.8 in)
196453.6 mm (2.1 in)
196582.3 mm (3.2 in)
196663.8 mm (2.5 in)
196750.5 mm (2.0 in)
196847.5 mm (1.9 in)
196977.7 mm (3.1 in)
197070.1 mm (2.8 in)
197147.0 mm (1.9 in)
197262.2 mm (2.4 in)
197369.9 mm (2.8 in)
197461.2 mm (2.4 in)
1975133.1 mm (5.2 in)
197661.2 mm (2.4 in)
197768.1 mm (2.7 in)
197848.3 mm (1.9 in)
1979132.6 mm (5.2 in)
198046.5 mm (1.8 in)
198147.0 mm (1.9 in)
198249.5 mm (1.9 in)
198349.5 mm (1.9 in)
198440.6 mm (1.6 in)
198572.4 mm (2.9 in)
198648.3 mm (1.9 in)
198783.3 mm (3.3 in)
198850.8 mm (2.0 in)
198951.6 mm (2.0 in)
199052.8 mm (2.1 in)
199147.8 mm (1.9 in)
199249.0 mm (1.9 in)
199372.1 mm (2.8 in)
199461.2 mm (2.4 in)
199589.7 mm (3.5 in)
199636.1 mm (1.4 in)
199736.8 mm (1.4 in)
199857.2 mm (2.3 in)
199946.0 mm (1.8 in)
200073.9 mm (2.9 in)
200169.6 mm (2.7 in)
200268.1 mm (2.7 in)
200338.1 mm (1.5 in)
2004105.2 mm (4.1 in)
200581.3 mm (3.2 in)
200679.5 mm (3.1 in)
200763.5 mm (2.5 in)
200864.3 mm (2.5 in)
200929.7 mm (1.2 in)
2010111.8 mm (4.4 in)
201143.2 mm (1.7 in)
201250.0 mm (2.0 in)
201354.4 mm (2.1 in)
2014104.1 mm (4.1 in)
201541.1 mm (1.6 in)
201698.6 mm (3.9 in)
201749.0 mm (1.9 in)
2018120.9 mm (4.8 in)
201953.3 mm (2.1 in)
202045.7 mm (1.8 in)
202170.1 mm (2.8 in)
202276.2 mm (3.0 in)
202371.1 mm (2.8 in)
2024129.8 mm (5.1 in)
202568.8 mm (2.7 in)
202662.7 mm (2.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Sibley by year The wettest five days of the year at Sibley, 1893 to 2026. The record is 296.1 mm (11.7 in) in 1979, marked on the chart; the median year is 84.9 mm (3.3 in). 01002003001900192019401960198020002020Record: 296.1 mm (11.7 in) in 1979
The wettest five days of the year at Sibley, 1893 to 2026. The record is 296.1 mm (11.7 in) in 1979, marked on the chart; the median year is 84.9 mm (3.3 in).
Wettest five days (Rx5day) at Sibley by year
YearWettest five days (Rx5day)
189335.3 mm (1.4 in)
1894112.5 mm (4.4 in)
1895153.2 mm (6.0 in)
1896118.2 mm (4.7 in)
189783.1 mm (3.3 in)
189881.2 mm (3.2 in)
189980.8 mm (3.2 in)
1900136.6 mm (5.4 in)
1901102.3 mm (4.0 in)
1902109.4 mm (4.3 in)
190397.6 mm (3.8 in)
190481.5 mm (3.2 in)
1905125.1 mm (4.9 in)
1906126.3 mm (5.0 in)
190783.4 mm (3.3 in)
1908110.8 mm (4.4 in)
1909100.4 mm (4.0 in)
191039.6 mm (1.6 in)
191171.1 mm (2.8 in)
191261.8 mm (2.4 in)
191366.5 mm (2.6 in)
1914148.1 mm (5.8 in)
191559.7 mm (2.4 in)
191653.0 mm (2.1 in)
191769.7 mm (2.7 in)
1918118.8 mm (4.7 in)
191941.9 mm (1.6 in)
193573.1 mm (2.9 in)
193674.7 mm (2.9 in)
193783.0 mm (3.3 in)
1938193.4 mm (7.6 in)
193957.9 mm (2.3 in)
194072.1 mm (2.8 in)
194157.7 mm (2.3 in)
1942114.4 mm (4.5 in)
1943123.2 mm (4.9 in)
1944121.9 mm (4.8 in)
194564.6 mm (2.5 in)
1946106.7 mm (4.2 in)
194775.4 mm (3.0 in)
194865.2 mm (2.6 in)
194980.0 mm (3.1 in)
1950112.3 mm (4.4 in)
195173.2 mm (2.9 in)
195264.0 mm (2.5 in)
1953168.5 mm (6.6 in)
1954250.3 mm (9.9 in)
195576.0 mm (3.0 in)
195679.8 mm (3.1 in)
195768.6 mm (2.7 in)
195854.8 mm (2.2 in)
1959125.7 mm (4.9 in)
196092.0 mm (3.6 in)
196158.9 mm (2.3 in)
1962110.7 mm (4.4 in)
196383.0 mm (3.3 in)
1964123.2 mm (4.9 in)
1965111.0 mm (4.4 in)
196667.6 mm (2.7 in)
196776.7 mm (3.0 in)
1968147.2 mm (5.8 in)
196987.6 mm (3.4 in)
197075.5 mm (3.0 in)
197196.2 mm (3.8 in)
197296.2 mm (3.8 in)
197391.2 mm (3.6 in)
1974153.7 mm (6.1 in)
1975247.7 mm (9.8 in)
197661.2 mm (2.4 in)
197793.5 mm (3.7 in)
197861.5 mm (2.4 in)
1979296.1 mm (11.7 in)
198073.4 mm (2.9 in)
198168.5 mm (2.7 in)
198280.8 mm (3.2 in)
198386.1 mm (3.4 in)
198486.4 mm (3.4 in)
1985119.1 mm (4.7 in)
198698.2 mm (3.9 in)
1987159.5 mm (6.3 in)
198858.0 mm (2.3 in)
198953.3 mm (2.1 in)
199087.9 mm (3.5 in)
199171.9 mm (2.8 in)
199272.9 mm (2.9 in)
199397.6 mm (3.8 in)
199497.5 mm (3.8 in)
199593.0 mm (3.7 in)
199661.8 mm (2.4 in)
199743.4 mm (1.7 in)
199864.6 mm (2.5 in)
199983.6 mm (3.3 in)
200088.4 mm (3.5 in)
2001108.2 mm (4.3 in)
200284.9 mm (3.3 in)
200367.8 mm (2.7 in)
2004144.2 mm (5.7 in)
2005106.0 mm (4.2 in)
200681.2 mm (3.2 in)
2007116.8 mm (4.6 in)
200873.2 mm (2.9 in)
200963.7 mm (2.5 in)
2010131.8 mm (5.2 in)
201191.4 mm (3.6 in)
2012100.7 mm (4.0 in)
201371.2 mm (2.8 in)
2014208.5 mm (8.2 in)
201563.7 mm (2.5 in)
201699.1 mm (3.9 in)
201782.5 mm (3.2 in)
2018188.2 mm (7.4 in)
2019110.7 mm (4.4 in)
202046.2 mm (1.8 in)
2021107.4 mm (4.2 in)
202278.2 mm (3.1 in)
202376.9 mm (3.0 in)
2024245.4 mm (9.7 in)
202569.4 mm (2.7 in)
2026136.9 mm (5.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Sibley by year The longest dry spell of the year at Sibley, 1893 to 2026. The record is 74 days in 1939, marked on the chart; the median year is 27 days. 0204060801900192019401960198020002020Record: 74 days in 1939
The longest dry spell of the year at Sibley, 1893 to 2026. The record is 74 days in 1939, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Sibley by year
YearLongest dry spell (CDD)
189328 days
189439 days
189532 days
189628 days
189738 days
189830 days
189917 days
190026 days
190128 days
190224 days
190351 days
190435 days
190523 days
190623 days
190722 days
190830 days
190920 days
191061 days
191143 days
191231 days
191332 days
191437 days
191530 days
191629 days
191731 days
191822 days
191926 days
193517 days
193623 days
193730 days
193828 days
193974 days
194034 days
194116 days
194238 days
194353 days
194427 days
194537 days
194640 days
194724 days
194833 days
194922 days
195025 days
195131 days
195264 days
195324 days
195424 days
195522 days
195623 days
195726 days
195838 days
195922 days
196048 days
196130 days
196238 days
196320 days
196421 days
196521 days
196621 days
196720 days
196817 days
196919 days
197027 days
197135 days
197223 days
197319 days
197431 days
197550 days
197638 days
197723 days
197829 days
197935 days
198025 days
198130 days
198233 days
198317 days
198416 days
198517 days
198642 days
198725 days
198828 days
198945 days
199026 days
199125 days
199222 days
199322 days
199433 days
199532 days
199619 days
199719 days
199822 days
199923 days
200028 days
200130 days
200236 days
200328 days
200425 days
200531 days
200626 days
200741 days
200818 days
200916 days
201027 days
201119 days
201224 days
201314 days
201423 days
201524 days
201618 days
201735 days
201825 days
201919 days
202040 days
202115 days
202226 days
202347 days
202437 days
202541 days
202634 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

99 years with a frost

Across 99 years with a frost, the median last spring frost at Sibley falls on 11 May and the median first autumn frost on 26 September, which leaves a median of 138 days between them.

In 1991 to 2025 the median growing season was 153 days. That is 19 days more than in 1894 to 1943.

Fitted over all years, the growing season changes by +2.4 days per decade at this station.

Frost dates and growing season at Sibley
MeasureMedian, all yearsEarliest period (1894 to 1943)Recent period (1991 to 2025)Recent against earliestFitted trend
Last spring frost11 May13 May3 May10 days earlier-1.3 days per decade
First autumn frost26 September22 September3 October11 days later+1.0 days per decade
Growing days138 days134 days153 days19 days more+2.4 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

110 years, 1894 to 2025

A day with at least 58.8 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 153.6 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Sibley: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years58.8 mm (2.3 in)
5 years80.3 mm (3.2 in)
10 years96.0 mm (3.8 in)
25 years117.6 mm (4.6 in)
50 years135.0 mm (5.3 in)
100 years153.6 mm (6.0 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 110 years of values from 1894 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: 153.2 mm (6.0 in) in 1895; 133.1 mm (5.2 in) in 1975; 132.6 mm (5.2 in) in 1979.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Sibley, at 1958. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1958 ran 0.4 C (0.7 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Sibley, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1958+0.4+0.7possible5

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

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Sibley had a mean temperature of 7.5 C (45.4 F) and 779.7 mm (30.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Oshkosh (United States, 582 km away), Appleton (United States, 594 km away) and Forest City 2 NNE (United States, 172 km away).

Climate twins of Sibley: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
OshkoshUnited States582 km (362 mi)7.4 C (45.3 F)785.8 mm (30.9 in)0.93
AppletonUnited States594 km (369 mi)7.4 C (45.2 F)767.6 mm (30.2 in)0.93
Forest City 2 NNEUnited States172 km (107 mi)7.5 C (45.4 F)794.0 mm (31.3 in)0.95

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 Sibley standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Sibley 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 (2026-10-14).