Built 2026-10-18 (18 October 2026)

River Falls Weather Records (USC00477226)

Record envelope, standing records and threshold days for River Falls (USC00477226), Wisconsin, United States, with 109 years of record.

Key Facts for River Falls

  • River Falls (USC00477226) is a weather station in Wisconsin, United States at 44.85 latitude and -92.61 longitude, 287 m (940 ft) above sea level.
  • The station reports from 1918 to 2026, 109 years of record.
  • 1,464 records set at River Falls still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • River Falls set a daily record high maximum temperature of 34.4 C (93.9 F) on 1 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Wisconsin, United States, 44.85 latitude, -92.61 longitude.
  • Elevation: 287 m (940 ft).
  • Period of record: 1918 to 2026, 109 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 River Falls, with 2026 drawn through them The band shows the record high and record low for each calendar day at River Falls. The lines show the 2026 daily maximum and minimum. 5 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 River Falls. 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 River Falls, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan13.9 C (57.0 F)-41.1 C (-42.0 F)6.1 C (43.0 F)-31.1 C (-24.0 F)
Feb17.2 C (63.0 F)-43.9 C (-47.0 F)11.1 C (52.0 F)-21.7 C (-7.1 F)
Mar27.2 C (81.0 F)-38.9 C (-38.0 F)26.7 C (80.1 F)-23.3 C (-9.9 F)
Apr33.3 C (91.9 F)-22.2 C (-8.0 F)27.8 C (82.0 F)-10.6 C (12.9 F)
May35.6 C (96.1 F)-7.2 C (19.0 F)32.8 C (91.0 F)-3.3 C (26.1 F)
Jun41.1 C (106.0 F)-1.1 C (30.0 F)34.4 C (93.9 F)6.1 C (43.0 F)
Jul42.8 C (109.0 F)2.8 C (37.0 F)36.7 C (98.1 F)8.3 C (46.9 F)
Aug39.4 C (102.9 F)0.0 C (32.0 F)30.6 C (87.1 F)7.8 C (46.0 F)
Sep39.4 C (102.9 F)-5.6 C (21.9 F)34.4 C (93.9 F)5.6 C (42.1 F)
Oct32.2 C (90.0 F)-15.0 C (5.0 F)26.7 C (80.1 F)1.7 C (35.1 F)
Nov25.6 C (78.1 F)-28.3 C (-18.9 F)n/an/a
Dec18.9 C (66.0 F)-37.8 C (-36.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at River Falls by the year they were set 1,464 records at River Falls still stand. 1936 holds the most, with 47. 02040601918: 111919: 111920: 191921: 201922: 141923: 211924: 331925: 341926: 171927: 241928: 211929: 241930: 311931: 391932: 181933: 221934: 261935: 201936: 471937: 131938: 91939: 151940: 231941: 151942: 171943: 71944: 201945: 121946: 101947: 201948: 121949: 61950: 241951: 241952: 201953: 111954: 51955: 121956: 151957: 51958: 51959: 91960: 61961: 61962: 181963: 111964: 91965: 131966: 101967: 91968: 181969: 111970: 61971: 91972: 131973: 71974: 121975: 31976: 111977: 151978: 41979: 51980: 91981: 61982: 51983: 171984: 81985: 151986: 71987: 151988: 191989: 121990: 211991: 211992: 71993: 11994: 41995: 101996: 131997: 71998: 161999: 92000: 182001: 82002: 92003: 102004: 122005: 102006: 52007: 102008: 72009: 132010: 92011: 12012: 262013: 112014: 142015: 42016: 52017: 122018: 102019: 102020: 172021: 132022: 42023: 162024: 162025: 122026: 31918192919401951196219731984199520062017
1,464 records at River Falls still stand. 1936 holds the most, with 47.
Standing records at River Falls by the year they were set
Year setStanding records
191811
191911
192019
192120
192214
192321
192433
192534
192617
192724
192821
192924
193031
193139
193218
193322
193426
193520
193647
193713
19389
193915
194023
194115
194217
19437
194420
194512
194610
194720
194812
19496
195024
195124
195220
195311
19545
195512
195615
19575
19585
19599
19606
19616
196218
196311
19649
196513
196610
19679
196818
196911
19706
19719
197213
19737
197412
19753
197611
197715
19784
19795
19809
19816
19825
198317
19848
198515
19867
198715
198819
198912
199021
199121
19927
19931
19944
199510
199613
19977
199816
19999
200018
20018
20029
200310
200412
200510
20065
200710
20087
200913
20109
20111
201226
201311
201414
20154
20165
201712
201810
201910
202017
202113
20224
202316
202416
202512
20263

All-Time Record Progression

3 new records
When River Falls set new all-time records 3 all-time records were set at River Falls between 1 June 1965 and 13 March 2006. Each dot is a new record. Record daily precipitationRecord high minimum temperatureRecord daily snowfall1 June 1965: Record daily precipitation 187.2 mm (7.4 in)8 June 1987: Record high minimum temperature 27.8 C (82.0 F)13 March 2006: Record daily snowfall 45.7 cm (18.0 in)1970198019902000
3 all-time records were set at River Falls between 1 June 1965 and 13 March 2006. Each dot is a new record.
When River Falls set new all-time records
DateKindDetail
1965-06-01Record daily precipitationRecord daily precipitation 187.2 mm (7.4 in)
1987-06-08Record high minimum temperatureRecord high minimum temperature 27.8 C (82.0 F)
2006-03-13Record daily snowfallRecord daily snowfall 45.7 cm (18.0 in)

Wettest Day of Each Month

Jun: 187.2 mm (7.4 in)
Record daily precipitation for each month at River Falls The wettest day on record for each calendar month at River Falls. The most was 187.2 mm (7.4 in) on 1 June 1965. 050100150200 Jan: 38.9 mm (1.5 in), 20 January 1996 Jan Feb: 37.3 mm (1.5 in), 29 February 2012 Feb Mar: 54.1 mm (2.1 in), 28 March 1998 Mar Apr: 119.4 mm (4.7 in), 18 April 2019 Apr May: 84.1 mm (3.3 in), 18 May 1938 May Jun: 187.2 mm (7.4 in), 1 June 1965 Jun Jul: 136.1 mm (5.4 in), 6 July 2015 Jul Aug: 140.2 mm (5.5 in), 8 August 2009 Aug Sep: 109.2 mm (4.3 in), 1 September 1942 Sep Oct: 97.5 mm (3.8 in), 17 October 1996 Oct Nov: 43.7 mm (1.7 in), 16 November 1996 Nov Dec: 38.9 mm (1.5 in), 28 December 1982 Dec
The wettest day on record for each calendar month at River Falls. The most was 187.2 mm (7.4 in) on 1 June 1965.
Record daily precipitation for each month at River Falls
MonthRecord daily precipitation (mm)Date
Jan38.9 mm (1.5 in)20 January 1996
Feb37.3 mm (1.5 in)29 February 2012
Mar54.1 mm (2.1 in)28 March 1998
Apr119.4 mm (4.7 in)18 April 2019
May84.1 mm (3.3 in)18 May 1938
Jun187.2 mm (7.4 in)1 June 1965
Jul136.1 mm (5.4 in)6 July 2015
Aug140.2 mm (5.5 in)8 August 2009
Sep109.2 mm (4.3 in)1 September 1942
Oct97.5 mm (3.8 in)17 October 1996
Nov43.7 mm (1.7 in)16 November 1996
Dec38.9 mm (1.5 in)28 December 1982

Period of Record Coverage

1918 to 2026
Days with data per year at River Falls 109 years of record at River Falls, 1918 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1918, 1919, 2026. 1918: 274 of 365 days1919: 203 of 365 days1920: 344 of 366 days1921: 354 of 365 days1922: 362 of 365 days1923: 364 of 365 days1924: 364 of 366 days1925: 364 of 365 days1926: 364 of 365 days1927: 364 of 365 days1928: 365 of 366 days1929: 365 of 365 days1930: 363 of 365 days1931: 363 of 365 days1932: 366 of 366 days1933: 363 of 365 days1934: 363 of 365 days1935: 363 of 365 days1936: 366 of 366 days1937: 364 of 365 days1938: 365 of 365 days1939: 363 of 365 days1940: 362 of 366 days1941: 365 of 365 days1942: 361 of 365 days1943: 362 of 365 days1944: 366 of 366 days1945: 364 of 365 days1946: 364 of 365 days1947: 362 of 365 days1948: 366 of 366 days1949: 364 of 365 days1950: 363 of 365 days1951: 365 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 363 of 365 days1955: 364 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: 364 of 365 days1966: 363 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 334 of 365 days1970: 357 of 365 days1971: 363 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 364 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 364 of 365 days1980: 365 of 366 days1981: 364 of 365 days1982: 365 of 365 days1983: 363 of 365 days1984: 363 of 366 days1985: 357 of 365 days1986: 364 of 365 days1987: 362 of 365 days1988: 363 of 366 days1989: 363 of 365 days1990: 365 of 365 days1991: 362 of 365 days1992: 365 of 366 days1993: 336 of 365 days1994: 338 of 365 days1995: 358 of 365 days1996: 350 of 366 days1997: 362 of 365 days1998: 361 of 365 days1999: 361 of 365 days2000: 365 of 366 days2001: 362 of 365 days2002: 356 of 365 days2003: 355 of 365 days2004: 358 of 366 days2005: 354 of 365 days2006: 352 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 363 of 365 days2010: 365 of 365 days2011: 364 of 365 days2012: 364 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 364 of 365 days2019: 365 of 365 days2020: 365 of 366 days2021: 363 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 348 of 366 days2025: 351 of 365 days2026: 262 of 365 days19201935195019651980199520102025
109 years of record at River Falls, 1918 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1918, 1919, 2026.
Days with data per year at River Falls
YearDays with dataShare of yearComplete
191827475%No
191920356%No
192034494%Yes
192135497%Yes
192236299%Yes
1923364100%Yes
192436499%Yes
1925364100%Yes
1926364100%Yes
1927364100%Yes
1928365100%Yes
1929365100%Yes
193036399%Yes
193136399%Yes
1932366100%Yes
193336399%Yes
193436399%Yes
193536399%Yes
1936366100%Yes
1937364100%Yes
1938365100%Yes
193936399%Yes
194036299%Yes
1941365100%Yes
194236199%Yes
194336299%Yes
1944366100%Yes
1945364100%Yes
1946364100%Yes
194736299%Yes
1948366100%Yes
1949364100%Yes
195036399%Yes
1951365100%Yes
1952366100%Yes
1953365100%Yes
195436399%Yes
1955364100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965364100%Yes
196636399%Yes
1967365100%Yes
1968366100%Yes
196933492%Yes
197035798%Yes
197136399%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
197636499%Yes
1977365100%Yes
1978364100%Yes
1979364100%Yes
1980365100%Yes
1981364100%Yes
1982365100%Yes
198336399%Yes
198436399%Yes
198535798%Yes
1986364100%Yes
198736299%Yes
198836399%Yes
198936399%Yes
1990365100%Yes
199136299%Yes
1992365100%Yes
199333692%Yes
199433893%Yes
199535898%Yes
199635096%Yes
199736299%Yes
199836199%Yes
199936199%Yes
2000365100%Yes
200136299%Yes
200235698%Yes
200335597%Yes
200435898%Yes
200535497%Yes
200635296%Yes
2007365100%Yes
2008366100%Yes
200936399%Yes
2010365100%Yes
2011364100%Yes
201236499%Yes
2013364100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017364100%Yes
2018364100%Yes
2019365100%Yes
2020365100%Yes
202136399%Yes
2022364100%Yes
2023365100%Yes
202434895%Yes
202535196%Yes
202626272%No

Latest Records

20
Latest records at River Falls
DateStationRecordValueBeat old record byOld record stoodSignificance
1 September 2026River Falls, USdaily high max (Provisional)34.4 C (93.9 F)0.5 C (0.9 F)96 years38 of 100 (Notable)
22 March 2026River Falls, USdaily high max26.7 C (80.1 F)7.3 C (13.1 F)97 years49 of 100 (Notable)
15 March 2026River Falls, USdaily snowfall19.1 cm (7.5 in)1.3 cm (0.5 in)36 years23 of 100 (Routine)
19 February 2026River Falls, USdaily rain12.4 mm (0.5 in)2.2 mm (0.09 in)42 years20 of 100 (Routine)
19 February 2026River Falls, USdaily snowfall (Tie)12.7 cm (5.0 in)tie59 years6 of 100 (Routine)
18 February 2026River Falls, USdaily high min (Tie)3.3 C (37.9 F)tie44 years5 of 100 (Routine)
15 February 2026River Falls, USdaily high max11.1 C (52.0 F)2.2 C (4.0 F)92 years40 of 100 (Notable)
14 February 2026River Falls, USdaily high max8.9 C (48.0 F)0.6 C (1.1 F)104 years40 of 100 (Notable)
14 January 2026River Falls, USdaily high max (Tie)6.1 C (43.0 F)tie82 years8 of 100 (Routine)
4 December 2025River Falls, USdaily low min-23.9 C (-11.0 F)0.6 C (1.1 F)75 years32 of 100 (Routine)
24 November 2025River Falls, USdaily high max (Tie)13.3 C (55.9 F)tie35 years5 of 100 (Routine)
5 October 2025River Falls, USdaily high max31.7 C (89.1 F)1.1 C (2.0 F)103 years41 of 100 (Notable)
5 October 2025River Falls, USdaily high min19.4 C (66.9 F)0.5 C (0.9 F)103 years40 of 100 (Notable)
22 September 2025River Falls, USdaily rain73.2 mm (2.9 in)36.9 mm (1.5 in)94 years66 of 100 (Major)
6 September 2025River Falls, USdaily low max13.9 C (57.0 F)0.5 C (0.9 F)60 years28 of 100 (Routine)
5 September 2025River Falls, USdaily low max (Tie)15.6 C (60.1 F)tie90 years9 of 100 (Routine)
25 August 2025River Falls, USdaily low max (Tie)16.1 C (61.0 F)tie10 years3 of 100 (Routine)
16 August 2025River Falls, USdaily rain32.0 mm (1.3 in)0.5 mm (0.02 in)71 years31 of 100 (Routine)
27 June 2025River Falls, USdaily low max17.8 C (64.0 F)0.5 C (0.9 F)56 years28 of 100 (Routine)
26 June 2025River Falls, USdaily rain58.7 mm (2.3 in)17.8 mm (0.7 in)104 years51 of 100 (Notable)

Climate Trend

105 complete years, 1920 to 2025
Annual mean temperature at River Falls as warming stripes, 1920 to 2025 One stripe for each of 105 complete years at River Falls, 1920 to 2025. Blue stripes are years cooler than the station's own mean of 6.7 C (44.0 F); red stripes are warmer. The coolest year was 1950, at 4.2 C (39.6 F), and the warmest was 1987, at 9.7 C (49.5 F). The strongest colour marks a difference of 3.1 C (5.6 F). 1920: 6.0 C, -0.7 C from the station mean1921: 7.5 C, +0.8 C from the station mean1922: 6.7 C, 0.0 C from the station mean1923: 6.4 C, -0.3 C from the station mean1924: 4.8 C, -1.9 C from the station mean1925: 5.9 C, -0.8 C from the station mean1926: 4.9 C, -1.8 C from the station mean1927: 5.1 C, -1.6 C from the station mean1928: 6.1 C, -0.6 C from the station mean1929: 4.4 C, -2.3 C from the station mean1930: 6.4 C, -0.3 C from the station mean1931: 8.9 C, +2.2 C from the station mean1932: 5.8 C, -0.9 C from the station mean1933: 6.9 C, +0.2 C from the station mean1934: 7.1 C, +0.4 C from the station mean1935: 6.1 C, -0.6 C from the station mean1936: 5.3 C, -1.4 C from the station mean1937: 5.7 C, -1.0 C from the station mean1938: 7.6 C, +0.9 C from the station mean1939: 7.6 C, +0.9 C from the station mean1940: 6.0 C, -0.7 C from the station mean1941: 8.0 C, +1.3 C from the station mean1942: 7.1 C, +0.4 C from the station mean1943: 5.9 C, -0.8 C from the station mean1944: 7.8 C, +1.1 C from the station mean1945: 6.0 C, -0.7 C from the station mean1946: 7.6 C, +0.9 C from the station mean1947: 6.6 C, -0.1 C from the station mean1948: 6.7 C, 0.0 C from the station mean1949: 7.4 C, +0.7 C from the station mean1950: 4.2 C, -2.5 C from the station mean1951: 4.8 C, -1.9 C from the station mean1952: 6.7 C, 0.0 C from the station mean1953: 7.4 C, +0.7 C from the station mean1954: 7.1 C, +0.4 C from the station mean1955: 6.9 C, +0.2 C from the station mean1956: 6.5 C, -0.2 C from the station mean1957: 6.9 C, +0.2 C from the station mean1958: 7.0 C, +0.3 C from the station mean1959: 7.0 C, +0.3 C from the station mean1960: 7.0 C, +0.3 C from the station mean1961: 7.3 C, +0.6 C from the station mean1962: 6.7 C, 0.0 C from the station mean1963: 7.3 C, +0.6 C from the station mean1964: 7.9 C, +1.2 C from the station mean1965: 6.1 C, -0.6 C from the station mean1966: 6.3 C, -0.4 C from the station mean1967: 6.3 C, -0.4 C from the station mean1968: 7.3 C, +0.6 C from the station mean1970: 6.4 C, -0.3 C from the station mean1971: 6.5 C, -0.2 C from the station mean1972: 5.4 C, -1.3 C from the station mean1973: 7.9 C, +1.2 C from the station mean1974: 7.0 C, +0.3 C from the station mean1975: 6.8 C, +0.1 C from the station mean1976: 6.9 C, +0.2 C from the station mean1977: 7.5 C, +0.8 C from the station mean1978: 6.1 C, -0.6 C from the station mean1979: 5.7 C, -1.0 C from the station mean1980: 7.1 C, +0.4 C from the station mean1981: 7.8 C, +1.1 C from the station mean1982: 6.5 C, -0.2 C from the station mean1983: 7.3 C, +0.6 C from the station mean1984: 7.4 C, +0.7 C from the station mean1985: 6.4 C, -0.3 C from the station mean1986: 7.6 C, +0.9 C from the station mean1987: 9.7 C, +3.0 C from the station mean1988: 7.9 C, +1.2 C from the station mean1989: 6.5 C, -0.2 C from the station mean1990: 8.6 C, +1.9 C from the station mean1991: 7.9 C, +1.2 C from the station mean1992: 7.6 C, +0.9 C from the station mean1993: 6.9 C, +0.2 C from the station mean1994: 6.8 C, +0.1 C from the station mean1995: 6.0 C, -0.7 C from the station mean1996: 4.7 C, -2.0 C from the station mean1997: 5.9 C, -0.8 C from the station mean1998: 8.4 C, +1.7 C from the station mean1999: 7.4 C, +0.7 C from the station mean2000: 6.6 C, -0.1 C from the station mean2001: 7.1 C, +0.4 C from the station mean2002: 6.9 C, +0.2 C from the station mean2003: 6.1 C, -0.6 C from the station mean2004: 6.3 C, -0.4 C from the station mean2005: 7.2 C, +0.5 C from the station mean2006: 7.8 C, +1.1 C from the station mean2007: 7.0 C, +0.3 C from the station mean2008: 5.0 C, -1.7 C from the station mean2009: 5.4 C, -1.3 C from the station mean2010: 6.7 C, 0.0 C from the station mean2011: 6.3 C, -0.4 C from the station mean2012: 8.2 C, +1.5 C from the station mean2013: 5.0 C, -1.7 C from the station mean2014: 4.3 C, -2.4 C from the station mean2015: 7.0 C, +0.3 C from the station mean2016: 7.7 C, +1.0 C from the station mean2017: 6.9 C, +0.2 C from the station mean2018: 5.8 C, -0.9 C from the station mean2019: 5.1 C, -1.6 C from the station mean2020: 6.8 C, +0.1 C from the station mean2021: 7.5 C, +0.8 C from the station mean2022: 5.6 C, -1.1 C from the station mean2023: 7.6 C, +0.9 C from the station mean2024: 8.4 C, +1.7 C from the station mean2025: 7.2 C, +0.5 C from the station mean19201930194019501960197019801990200020102020
One stripe for each of 105 complete years at River Falls, 1920 to 2025. Blue stripes are years cooler than the station's own mean of 6.7 C (44.0 F); red stripes are warmer. The coolest year was 1950, at 4.2 C (39.6 F), and the warmest was 1987, at 9.7 C (49.5 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at River Falls as warming stripes, 1920 to 2025
YearAnnual mean temperatureDifference from the station mean
19206.0 C-0.65 C
19217.5 C+0.77 C
19226.7 C+0.02 C
19236.4 C-0.28 C
19244.8 C-1.93 C
19255.9 C-0.79 C
19264.9 C-1.82 C
19275.1 C-1.59 C
19286.1 C-0.56 C
19294.4 C-2.30 C
19306.4 C-0.26 C
19318.9 C+2.25 C
19325.8 C-0.92 C
19336.9 C+0.19 C
19347.1 C+0.41 C
19356.1 C-0.63 C
19365.3 C-1.40 C
19375.7 C-0.98 C
19387.6 C+0.92 C
19397.6 C+0.92 C
19406.0 C-0.69 C
19418.0 C+1.27 C
19427.1 C+0.45 C
19435.9 C-0.75 C
19447.8 C+1.14 C
19456.0 C-0.74 C
19467.6 C+0.92 C
19476.6 C-0.10 C
19486.7 C-0.04 C
19497.4 C+0.70 C
19504.2 C-2.47 C
19514.8 C-1.91 C
19526.7 C+0.02 C
19537.4 C+0.66 C
19547.1 C+0.42 C
19556.9 C+0.19 C
19566.5 C-0.16 C
19576.9 C+0.16 C
19587.0 C+0.29 C
19597.0 C+0.34 C
19607.0 C+0.26 C
19617.3 C+0.59 C
19626.7 C-0.03 C
19637.3 C+0.63 C
19647.9 C+1.21 C
19656.1 C-0.58 C
19666.3 C-0.43 C
19676.3 C-0.44 C
19687.3 C+0.63 C
19706.4 C-0.25 C
19716.5 C-0.17 C
19725.4 C-1.31 C
19737.9 C+1.22 C
19747.0 C+0.30 C
19756.8 C+0.10 C
19766.9 C+0.18 C
19777.5 C+0.79 C
19786.1 C-0.58 C
19795.7 C-0.96 C
19807.1 C+0.38 C
19817.8 C+1.08 C
19826.5 C-0.23 C
19837.3 C+0.63 C
19847.4 C+0.66 C
19856.4 C-0.33 C
19867.6 C+0.92 C
19879.7 C+3.02 C
19887.9 C+1.19 C
19896.5 C-0.24 C
19908.6 C+1.94 C
19917.9 C+1.25 C
19927.6 C+0.86 C
19936.9 C+0.21 C
19946.8 C+0.15 C
19956.0 C-0.72 C
19964.7 C-2.04 C
19975.9 C-0.81 C
19988.4 C+1.73 C
19997.4 C+0.73 C
20006.6 C-0.08 C
20017.1 C+0.40 C
20026.9 C+0.24 C
20036.1 C-0.62 C
20046.3 C-0.41 C
20057.2 C+0.52 C
20067.8 C+1.08 C
20077.0 C+0.28 C
20085.0 C-1.74 C
20095.4 C-1.34 C
20106.7 C-0.03 C
20116.3 C-0.35 C
20128.2 C+1.55 C
20135.0 C-1.70 C
20144.3 C-2.41 C
20157.0 C+0.34 C
20167.7 C+1.01 C
20176.9 C+0.19 C
20185.8 C-0.89 C
20195.1 C-1.57 C
20206.8 C+0.09 C
20217.5 C+0.79 C
20225.6 C-1.12 C
20237.6 C+0.93 C
20248.4 C+1.72 C
20257.2 C+0.52 C

The fitted trend in annual mean temperature here over 1920 to 2025 is 0.05 C (-0.02 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.08 F (-0.03 to 0.20) per decade. The slope is a straight line fitted to 105 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at River Falls
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.05 C (-0.02 to 0.11) per decade0.08 F (-0.03 to 0.20) per decade1920 to 2025105Not clearly different from zero
Mean daily maximum0.02 C (-0.04 to 0.09) per decade0.04 F (-0.08 to 0.16) per decade1920 to 2025105Not clearly different from zero
Mean daily minimum0.07 C (0.00 to 0.14) per decade0.12 F (0.00 to 0.24) per decade1920 to 2025105Rise

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

1918 to 2026
Yearly extremes at River Falls: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)193635.0 C (95.0 F)109
Coldest night (TNn)-43.9 C (-47.0 F)1936-31.7 C (-25.1 F)109
Wettest day (Rx1day)187.2 mm (7.4 in)196555.1 mm (2.2 in)109
Wettest five days (Rx5day)194.3 mm (7.6 in)202087.9 mm (3.5 in)109
Longest dry spell (CDD)59 days195223 days109

Hottest day (TXx)

Hottest day (TXx) at River Falls by year The hottest day of the year at River Falls, 1918 to 2026. The record is 42.8 C (109.0 F) in 1936, marked on the chart; the median year is 35.0 C (95.0 F). 30354045192019401960198020002020Record: 42.8 C (109.0 F) in 1936
The hottest day of the year at River Falls, 1918 to 2026. The record is 42.8 C (109.0 F) in 1936, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at River Falls by year
YearHottest day (TXx)
191833.9 C (93.0 F)
191934.4 C (93.9 F)
192033.3 C (91.9 F)
192137.8 C (100.0 F)
192237.8 C (100.0 F)
192336.7 C (98.1 F)
192432.8 C (91.0 F)
192537.8 C (100.0 F)
192636.1 C (97.0 F)
192733.9 C (93.0 F)
192832.8 C (91.0 F)
192937.2 C (99.0 F)
193036.7 C (98.1 F)
193140.6 C (105.1 F)
193238.9 C (102.0 F)
193337.8 C (100.0 F)
193441.1 C (106.0 F)
193537.2 C (99.0 F)
193642.8 C (109.0 F)
193736.7 C (98.1 F)
193835.0 C (95.0 F)
193935.0 C (95.0 F)
194036.1 C (97.0 F)
194135.6 C (96.1 F)
194234.4 C (93.9 F)
194335.0 C (95.0 F)
194435.0 C (95.0 F)
194533.9 C (93.0 F)
194633.3 C (91.9 F)
194739.4 C (102.9 F)
194836.7 C (98.1 F)
194936.1 C (97.0 F)
195033.3 C (91.9 F)
195131.1 C (88.0 F)
195232.2 C (90.0 F)
195334.4 C (93.9 F)
195433.9 C (93.0 F)
195538.9 C (102.0 F)
195637.2 C (99.0 F)
195734.4 C (93.9 F)
195835.0 C (95.0 F)
195933.9 C (93.0 F)
196035.6 C (96.1 F)
196135.6 C (96.1 F)
196232.8 C (91.0 F)
196337.2 C (99.0 F)
196437.8 C (100.0 F)
196535.0 C (95.0 F)
196635.0 C (95.0 F)
196732.2 C (90.0 F)
196835.0 C (95.0 F)
196934.4 C (93.9 F)
197035.0 C (95.0 F)
197134.4 C (93.9 F)
197234.4 C (93.9 F)
197334.4 C (93.9 F)
197438.3 C (100.9 F)
197534.4 C (93.9 F)
197636.1 C (97.0 F)
197736.1 C (97.0 F)
197833.9 C (93.0 F)
197931.7 C (89.1 F)
198035.6 C (96.1 F)
198133.3 C (91.9 F)
198235.6 C (96.1 F)
198335.0 C (95.0 F)
198433.3 C (91.9 F)
198537.2 C (99.0 F)
198633.9 C (93.0 F)
198736.7 C (98.1 F)
198838.9 C (102.0 F)
198933.3 C (91.9 F)
199038.3 C (100.9 F)
199135.6 C (96.1 F)
199232.8 C (91.0 F)
199334.4 C (93.9 F)
199433.9 C (93.0 F)
199537.8 C (100.0 F)
199635.0 C (95.0 F)
199733.9 C (93.0 F)
199833.3 C (91.9 F)
199936.7 C (98.1 F)
200034.4 C (93.9 F)
200135.6 C (96.1 F)
200235.0 C (95.0 F)
200335.6 C (96.1 F)
200433.3 C (91.9 F)
200534.4 C (93.9 F)
200637.2 C (99.0 F)
200735.6 C (96.1 F)
200832.2 C (90.0 F)
200933.9 C (93.0 F)
201033.9 C (93.0 F)
201137.2 C (99.0 F)
201236.7 C (98.1 F)
201335.0 C (95.0 F)
201430.6 C (87.1 F)
201532.2 C (90.0 F)
201632.8 C (91.0 F)
201733.3 C (91.9 F)
201835.6 C (96.1 F)
201933.3 C (91.9 F)
202033.9 C (93.0 F)
202136.1 C (97.0 F)
202236.7 C (98.1 F)
202335.6 C (96.1 F)
202432.2 C (90.0 F)
202536.1 C (97.0 F)
202636.7 C (98.1 F)

Coldest night (TNn)

Coldest night (TNn) at River Falls by year The coldest night of the year at River Falls, 1918 to 2026. The record is -43.9 C (-47.0 F) in 1936, marked on the chart; the median year is -31.7 C (-25.1 F). -50-40-30-20-10192019401960198020002020Record: -43.9 C (-47.0 F) in 1936
The coldest night of the year at River Falls, 1918 to 2026. The record is -43.9 C (-47.0 F) in 1936, marked on the chart; the median year is -31.7 C (-25.1 F).
Coldest night (TNn) at River Falls by year
YearColdest night (TNn)
1918-13.9 C (7.0 F)
1919-36.7 C (-34.1 F)
1920-36.7 C (-34.1 F)
1921-27.8 C (-18.0 F)
1922-35.0 C (-31.0 F)
1923-36.7 C (-34.1 F)
1924-37.8 C (-36.0 F)
1925-36.1 C (-33.0 F)
1926-31.1 C (-24.0 F)
1927-38.3 C (-36.9 F)
1928-31.7 C (-25.1 F)
1929-42.8 C (-45.0 F)
1930-38.9 C (-38.0 F)
1931-22.2 C (-8.0 F)
1932-33.3 C (-27.9 F)
1933-36.7 C (-34.1 F)
1934-31.7 C (-25.1 F)
1935-40.6 C (-41.1 F)
1936-43.9 C (-47.0 F)
1937-35.0 C (-31.0 F)
1938-31.7 C (-25.1 F)
1939-33.9 C (-29.0 F)
1940-36.7 C (-34.1 F)
1941-30.0 C (-22.0 F)
1942-32.8 C (-27.0 F)
1943-37.2 C (-35.0 F)
1944-30.0 C (-22.0 F)
1945-31.1 C (-24.0 F)
1946-37.8 C (-36.0 F)
1947-31.7 C (-25.1 F)
1948-38.9 C (-38.0 F)
1949-34.4 C (-29.9 F)
1950-38.9 C (-38.0 F)
1951-41.1 C (-42.0 F)
1952-35.0 C (-31.0 F)
1953-31.1 C (-24.0 F)
1954-35.0 C (-31.0 F)
1955-35.6 C (-32.1 F)
1956-34.4 C (-29.9 F)
1957-36.1 C (-33.0 F)
1958-31.7 C (-25.1 F)
1959-32.2 C (-26.0 F)
1960-28.9 C (-20.0 F)
1961-29.4 C (-20.9 F)
1962-35.0 C (-31.0 F)
1963-35.0 C (-31.0 F)
1964-26.7 C (-16.1 F)
1965-35.6 C (-32.1 F)
1966-33.9 C (-29.0 F)
1967-37.2 C (-35.0 F)
1968-33.3 C (-27.9 F)
1969-28.9 C (-20.0 F)
1970-37.8 C (-36.0 F)
1971-33.9 C (-29.0 F)
1972-33.3 C (-27.9 F)
1973-31.1 C (-24.0 F)
1974-33.9 C (-29.0 F)
1975-30.6 C (-23.1 F)
1976-33.3 C (-27.9 F)
1977-37.8 C (-36.0 F)
1978-28.9 C (-20.0 F)
1979-32.8 C (-27.0 F)
1980-26.7 C (-16.1 F)
1981-29.4 C (-20.9 F)
1982-33.9 C (-29.0 F)
1983-37.8 C (-36.0 F)
1984-32.2 C (-26.0 F)
1985-33.3 C (-27.9 F)
1986-29.4 C (-20.9 F)
1987-26.7 C (-16.1 F)
1988-30.0 C (-22.0 F)
1989-32.2 C (-26.0 F)
1990-31.1 C (-24.0 F)
1991-28.3 C (-18.9 F)
1992-26.1 C (-15.0 F)
1993-26.7 C (-16.1 F)
1994-34.4 C (-29.9 F)
1995-25.6 C (-14.1 F)
1996-37.2 C (-35.0 F)
1997-28.3 C (-18.9 F)
1998-27.8 C (-18.0 F)
1999-28.9 C (-20.0 F)
2000-32.2 C (-26.0 F)
2001-25.0 C (-13.0 F)
2002-22.2 C (-8.0 F)
2003-27.8 C (-18.0 F)
2004-30.6 C (-23.1 F)
2005-27.8 C (-18.0 F)
2006-27.2 C (-17.0 F)
2007-29.4 C (-20.9 F)
2008-28.9 C (-20.0 F)
2009-33.9 C (-29.0 F)
2010-30.6 C (-23.1 F)
2011-33.3 C (-27.9 F)
2012-25.0 C (-13.0 F)
2013-28.9 C (-20.0 F)
2014-31.1 C (-24.0 F)
2015-29.4 C (-20.9 F)
2016-31.1 C (-24.0 F)
2017-27.2 C (-17.0 F)
2018-30.0 C (-22.0 F)
2019-37.8 C (-36.0 F)
2020-28.9 C (-20.0 F)
2021-34.4 C (-29.9 F)
2022-30.6 C (-23.1 F)
2023-26.7 C (-16.1 F)
2024-25.6 C (-14.1 F)
2025-30.6 C (-23.1 F)
2026-31.1 C (-24.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at River Falls by year The wettest day of the year at River Falls, 1918 to 2026. The record is 187.2 mm (7.4 in) in 1965, marked on the chart; the median year is 55.1 mm (2.2 in). 050100150200192019401960198020002020Record: 187.2 mm (7.4 in) in 1965
The wettest day of the year at River Falls, 1918 to 2026. The record is 187.2 mm (7.4 in) in 1965, marked on the chart; the median year is 55.1 mm (2.2 in).
Wettest day (Rx1day) at River Falls by year
YearWettest day (Rx1day)
191878.5 mm (3.1 in)
191931.8 mm (1.3 in)
192074.9 mm (2.9 in)
192163.5 mm (2.5 in)
192266.0 mm (2.6 in)
192372.4 mm (2.9 in)
192452.1 mm (2.1 in)
192568.6 mm (2.7 in)
192677.5 mm (3.1 in)
192752.6 mm (2.1 in)
192848.3 mm (1.9 in)
192952.1 mm (2.1 in)
193036.1 mm (1.4 in)
193143.7 mm (1.7 in)
193229.5 mm (1.2 in)
193399.6 mm (3.9 in)
193460.2 mm (2.4 in)
193528.2 mm (1.1 in)
193625.4 mm (1.0 in)
193735.1 mm (1.4 in)
193884.1 mm (3.3 in)
193953.6 mm (2.1 in)
194082.0 mm (3.2 in)
194150.0 mm (2.0 in)
1942109.2 mm (4.3 in)
194362.5 mm (2.5 in)
194432.0 mm (1.3 in)
194554.4 mm (2.1 in)
194699.1 mm (3.9 in)
194741.7 mm (1.6 in)
194850.3 mm (2.0 in)
1949101.9 mm (4.0 in)
195042.7 mm (1.7 in)
1951109.2 mm (4.3 in)
195237.6 mm (1.5 in)
195354.1 mm (2.1 in)
195472.1 mm (2.8 in)
195573.7 mm (2.9 in)
195655.1 mm (2.2 in)
195785.9 mm (3.4 in)
195841.9 mm (1.6 in)
195961.5 mm (2.4 in)
196073.7 mm (2.9 in)
196148.0 mm (1.9 in)
196244.2 mm (1.7 in)
196330.7 mm (1.2 in)
196453.1 mm (2.1 in)
1965187.2 mm (7.4 in)
196652.6 mm (2.1 in)
196746.5 mm (1.8 in)
196886.9 mm (3.4 in)
196929.7 mm (1.2 in)
197050.0 mm (2.0 in)
197149.5 mm (1.9 in)
197268.8 mm (2.7 in)
197350.3 mm (2.0 in)
197452.1 mm (2.1 in)
197587.9 mm (3.5 in)
197629.2 mm (1.1 in)
1977118.6 mm (4.7 in)
1978120.7 mm (4.8 in)
197962.7 mm (2.5 in)
198054.6 mm (2.1 in)
198169.1 mm (2.7 in)
198238.9 mm (1.5 in)
198342.4 mm (1.7 in)
198451.8 mm (2.0 in)
198573.9 mm (2.9 in)
198659.9 mm (2.4 in)
198752.8 mm (2.1 in)
198849.5 mm (1.9 in)
198950.3 mm (2.0 in)
199050.3 mm (2.0 in)
199151.8 mm (2.0 in)
199252.8 mm (2.1 in)
199353.8 mm (2.1 in)
199458.2 mm (2.3 in)
199549.0 mm (1.9 in)
199697.5 mm (3.8 in)
199768.6 mm (2.7 in)
199867.6 mm (2.7 in)
199933.3 mm (1.3 in)
200043.9 mm (1.7 in)
200149.8 mm (2.0 in)
200265.5 mm (2.6 in)
2003127.5 mm (5.0 in)
200455.6 mm (2.2 in)
200582.3 mm (3.2 in)
200674.4 mm (2.9 in)
200747.0 mm (1.9 in)
200839.6 mm (1.6 in)
2009140.2 mm (5.5 in)
201093.2 mm (3.7 in)
201149.8 mm (2.0 in)
201272.9 mm (2.9 in)
201357.7 mm (2.3 in)
201461.0 mm (2.4 in)
2015136.1 mm (5.4 in)
201689.4 mm (3.5 in)
201757.7 mm (2.3 in)
201860.2 mm (2.4 in)
2019119.4 mm (4.7 in)
2020176.5 mm (6.9 in)
202154.1 mm (2.1 in)
202264.5 mm (2.5 in)
202352.1 mm (2.1 in)
202464.0 mm (2.5 in)
202573.2 mm (2.9 in)
202628.4 mm (1.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at River Falls by year The wettest five days of the year at River Falls, 1918 to 2026. The record is 194.3 mm (7.6 in) in 2020, marked on the chart; the median year is 87.9 mm (3.5 in). 050100150200192019401960198020002020Record: 194.3 mm (7.6 in) in 2020
The wettest five days of the year at River Falls, 1918 to 2026. The record is 194.3 mm (7.6 in) in 2020, marked on the chart; the median year is 87.9 mm (3.5 in).
Wettest five days (Rx5day) at River Falls by year
YearWettest five days (Rx5day)
191888.1 mm (3.5 in)
191957.2 mm (2.3 in)
1920115.5 mm (4.5 in)
1921101.6 mm (4.0 in)
192269.8 mm (2.7 in)
1923104.5 mm (4.1 in)
192476.8 mm (3.0 in)
1925112.3 mm (4.4 in)
192678.8 mm (3.1 in)
192777.0 mm (3.0 in)
192860.0 mm (2.4 in)
192973.7 mm (2.9 in)
193078.0 mm (3.1 in)
193160.4 mm (2.4 in)
193254.0 mm (2.1 in)
1933115.1 mm (4.5 in)
1934105.2 mm (4.1 in)
193564.8 mm (2.6 in)
193644.2 mm (1.7 in)
193773.0 mm (2.9 in)
1938134.9 mm (5.3 in)
193980.3 mm (3.2 in)
1940126.1 mm (5.0 in)
194183.0 mm (3.3 in)
1942156.9 mm (6.2 in)
194387.7 mm (3.5 in)
194463.5 mm (2.5 in)
194571.4 mm (2.8 in)
1946122.0 mm (4.8 in)
194760.9 mm (2.4 in)
194877.5 mm (3.1 in)
1949137.8 mm (5.4 in)
195068.1 mm (2.7 in)
1951176.2 mm (6.9 in)
195256.1 mm (2.2 in)
195387.9 mm (3.5 in)
195479.4 mm (3.1 in)
195582.3 mm (3.2 in)
1956143.5 mm (5.6 in)
1957115.1 mm (4.5 in)
195854.4 mm (2.1 in)
195977.2 mm (3.0 in)
196081.0 mm (3.2 in)
196185.9 mm (3.4 in)
196254.6 mm (2.1 in)
196330.7 mm (1.2 in)
196477.0 mm (3.0 in)
1965192.8 mm (7.6 in)
196656.8 mm (2.2 in)
196784.8 mm (3.3 in)
1968100.4 mm (4.0 in)
196959.0 mm (2.3 in)
1970110.4 mm (4.3 in)
197178.9 mm (3.1 in)
197291.2 mm (3.6 in)
197373.9 mm (2.9 in)
197479.8 mm (3.1 in)
1975167.5 mm (6.6 in)
197645.7 mm (1.8 in)
1977147.3 mm (5.8 in)
1978125.8 mm (5.0 in)
197998.8 mm (3.9 in)
1980106.2 mm (4.2 in)
1981123.4 mm (4.9 in)
198282.1 mm (3.2 in)
198355.4 mm (2.2 in)
198468.6 mm (2.7 in)
198590.2 mm (3.6 in)
198691.5 mm (3.6 in)
1987124.7 mm (4.9 in)
1988123.2 mm (4.9 in)
198959.8 mm (2.4 in)
199082.9 mm (3.3 in)
199193.2 mm (3.7 in)
199279.3 mm (3.1 in)
199396.7 mm (3.8 in)
199479.5 mm (3.1 in)
199583.5 mm (3.3 in)
1996100.5 mm (4.0 in)
1997107.9 mm (4.2 in)
1998133.1 mm (5.2 in)
199959.2 mm (2.3 in)
200087.9 mm (3.5 in)
2001100.1 mm (3.9 in)
2002119.9 mm (4.7 in)
2003141.5 mm (5.6 in)
200497.2 mm (3.8 in)
200593.4 mm (3.7 in)
2006103.4 mm (4.1 in)
200773.1 mm (2.9 in)
200850.6 mm (2.0 in)
2009140.2 mm (5.5 in)
2010140.7 mm (5.5 in)
201180.1 mm (3.2 in)
2012112.0 mm (4.4 in)
201368.6 mm (2.7 in)
2014121.4 mm (4.8 in)
2015169.4 mm (6.7 in)
201696.3 mm (3.8 in)
2017110.0 mm (4.3 in)
201898.9 mm (3.9 in)
2019119.4 mm (4.7 in)
2020194.3 mm (7.6 in)
202193.0 mm (3.7 in)
202284.6 mm (3.3 in)
202393.3 mm (3.7 in)
202471.6 mm (2.8 in)
202594.8 mm (3.7 in)
202653.0 mm (2.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at River Falls by year The longest dry spell of the year at River Falls, 1918 to 2026. The record is 59 days in 1952, marked on the chart; the median year is 23 days. 0204060192019401960198020002020Record: 59 days in 1952
The longest dry spell of the year at River Falls, 1918 to 2026. The record is 59 days in 1952, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at River Falls by year
YearLongest dry spell (CDD)
191814 days
191931 days
192023 days
192120 days
192220 days
192326 days
192418 days
192533 days
192616 days
192725 days
192822 days
192921 days
193019 days
193123 days
193218 days
193326 days
193423 days
193525 days
193647 days
193725 days
193828 days
193917 days
194021 days
194126 days
194238 days
194353 days
194427 days
194517 days
194621 days
194724 days
194819 days
194933 days
195022 days
195118 days
195259 days
195329 days
195430 days
195521 days
195627 days
195719 days
195830 days
195932 days
196032 days
196129 days
196218 days
196326 days
196437 days
196522 days
196622 days
196730 days
196831 days
196923 days
197026 days
197114 days
197221 days
197322 days
197422 days
197523 days
197644 days
197718 days
197834 days
197917 days
198029 days
198125 days
198233 days
198332 days
198421 days
198512 days
198620 days
198728 days
198828 days
198928 days
199022 days
199126 days
199248 days
199327 days
199428 days
199518 days
199620 days
199717 days
199822 days
199925 days
200017 days
200118 days
200216 days
200321 days
200419 days
200514 days
200622 days
200722 days
200817 days
200924 days
201029 days
201136 days
201223 days
201329 days
201425 days
201518 days
201619 days
201716 days
201820 days
201920 days
202025 days
202121 days
202213 days
202325 days
202434 days
202520 days
202619 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

105 years with a frost

Across 105 years with a frost, the median last spring frost at River Falls falls on 12 May and the median first autumn frost on 28 September, which leaves a median of 144 days between them.

In 1996 to 2025 the median growing season was 146 days. That is 14 days more than in 1920 to 1949.

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

Frost dates and growing season at River Falls
MeasureMedian, all yearsEarliest period (1920 to 1949)Recent period (1996 to 2025)Recent against earliestFitted trend
Last spring frost12 May16 May13 May3 days earlier-0.9 days per decade
First autumn frost28 September27 September30 September3 days later+0.7 days per decade
Growing days144 days132 days146 days14 days more+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

102 years, 1920 to 2025

A day with at least 57.5 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 175.9 mm (6.9 in) of rain is expected about once in 100 years.

Rainfall return levels at River Falls: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years57.5 mm (2.3 in)
5 years80.5 mm (3.2 in)
10 years98.7 mm (3.9 in)
25 years125.7 mm (4.9 in)
50 years149.2 mm (5.9 in)
100 years175.9 mm (6.9 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 102 years of values from 1920 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: 187.2 mm (7.4 in) in 1965; 176.5 mm (6.9 in) in 2020; 140.2 mm (5.5 in) in 2009.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of River Falls, at 1933. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1933 ran 0.5 C (0.8 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at River Falls, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1933+0.5+0.8likely5

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, River Falls had a mean temperature of 6.6 C (43.9 F) and 775.1 mm (30.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Laprairie (Canada, 1,502 km away), Green Bay (United States, 358 km away) and Shawano 2SSW (United States, 315 km away).

Climate twins of River Falls: 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
LaprairieCanada1,502 km (933 mi)6.5 C (43.6 F)775.0 mm (30.5 in)0.81
Green BayUnited States358 km (222 mi)6.6 C (43.9 F)733.0 mm (28.9 in)0.84
Shawano 2SSWUnited States315 km (196 mi)6.5 C (43.8 F)803.5 mm (31.6 in)0.87

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 River Falls standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for River Falls 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).