Willow Rsvr Weather Records (USC00479236)
Record envelope, standing records and threshold days for Willow Rsvr (USC00479236), Wisconsin, United States, with 93 years of record.
Key Facts for Willow Rsvr
- Willow Rsvr (USC00479236) is a weather station in Wisconsin, United States at 45.71 latitude and -89.85 longitude, 467 m (1,532 ft) above sea level.
- The station reports from 1934 to 2026, 93 years of record.
- 1,464 records set at Willow Rsvr still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Willow Rsvr set a daily record precipitation of 35.6 mm (1.4 in) on 12 April 2026.
About the Station
- Location: Wisconsin, United States, 45.71 latitude, -89.85 longitude.
- Elevation: 467 m (1,532 ft).
- Period of record: 1934 to 2026, 93 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 10.6 C (51.1 F) | -42.8 C (-45.0 F) | n/a | n/a |
| Feb | 17.2 C (63.0 F) | -41.7 C (-43.1 F) | n/a | n/a |
| Mar | 23.9 C (75.0 F) | -40.0 C (-40.0 F) | n/a | n/a |
| Apr | 31.1 C (88.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
| May | 41.1 C (106.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Jun | 38.3 C (100.9 F) | -5.0 C (23.0 F) | n/a | n/a |
| Jul | 44.4 C (111.9 F) | -1.1 C (30.0 F) | n/a | n/a |
| Aug | 37.8 C (100.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Sep | 33.9 C (93.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| Oct | 30.0 C (86.0 F) | -14.4 C (6.1 F) | n/a | n/a |
| Nov | 23.9 C (75.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Dec | 15.0 C (59.0 F) | -37.2 C (-35.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1934 | 26 |
| 1935 | 22 |
| 1936 | 43 |
| 1937 | 17 |
| 1938 | 12 |
| 1939 | 21 |
| 1940 | 26 |
| 1941 | 20 |
| 1942 | 18 |
| 1943 | 18 |
| 1944 | 20 |
| 1945 | 20 |
| 1946 | 21 |
| 1947 | 42 |
| 1948 | 25 |
| 1949 | 11 |
| 1950 | 23 |
| 1951 | 24 |
| 1952 | 17 |
| 1953 | 17 |
| 1954 | 18 |
| 1955 | 14 |
| 1956 | 23 |
| 1957 | 9 |
| 1958 | 19 |
| 1959 | 16 |
| 1960 | 13 |
| 1961 | 10 |
| 1962 | 16 |
| 1963 | 23 |
| 1964 | 20 |
| 1965 | 24 |
| 1966 | 17 |
| 1967 | 13 |
| 1968 | 12 |
| 1969 | 5 |
| 1970 | 7 |
| 1971 | 16 |
| 1972 | 24 |
| 1973 | 12 |
| 1974 | 18 |
| 1975 | 12 |
| 1976 | 32 |
| 1977 | 25 |
| 1978 | 10 |
| 1979 | 18 |
| 1980 | 12 |
| 1981 | 14 |
| 1982 | 16 |
| 1983 | 14 |
| 1984 | 24 |
| 1985 | 31 |
| 1986 | 15 |
| 1987 | 18 |
| 1988 | 14 |
| 1989 | 16 |
| 1990 | 13 |
| 1991 | 20 |
| 1992 | 13 |
| 1993 | 13 |
| 1994 | 14 |
| 1995 | 11 |
| 1996 | 12 |
| 1997 | 5 |
| 1998 | 14 |
| 1999 | 3 |
| 2000 | 20 |
| 2001 | 18 |
| 2002 | 3 |
| 2003 | 9 |
| 2004 | 6 |
| 2005 | 7 |
| 2006 | 14 |
| 2007 | 9 |
| 2008 | 6 |
| 2009 | 12 |
| 2010 | 14 |
| 2011 | 6 |
| 2012 | 12 |
| 2013 | 13 |
| 2014 | 20 |
| 2015 | 13 |
| 2016 | 7 |
| 2017 | 18 |
| 2018 | 15 |
| 2019 | 9 |
| 2020 | 12 |
| 2021 | 19 |
| 2022 | 13 |
| 2023 | 17 |
| 2024 | 11 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1972-01-15 | Record low maximum temperature | Record low maximum temperature -27.8 C (-18.0 F) |
| 1981-06-14 | Record daily precipitation | Record daily precipitation 155.4 mm (6.1 in) |
| 1982-01-17 | Record low maximum temperature | Record low maximum temperature -30.0 C (-22.0 F) |
| 1982-01-17 | Record low minimum temperature | Record low minimum temperature -42.8 C (-45.0 F) |
| 2019-03-02 | Record snow depth | Record snow depth 106.7 cm (42.0 in) |
Wettest Day of Each Month
Jun: 155.4 mm (6.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 32.8 mm (1.3 in) | 5 January 1997 |
| Feb | 30.5 mm (1.2 in) | 21 February 1937 |
| Mar | 56.1 mm (2.2 in) | 16 March 2016 |
| Apr | 59.4 mm (2.3 in) | 3 April 1934 |
| May | 81.8 mm (3.2 in) | 6 May 1960 |
| Jun | 155.4 mm (6.1 in) | 14 June 1981 |
| Jul | 127.0 mm (5.0 in) | 26 July 2020 |
| Aug | 86.4 mm (3.4 in) | 31 August 1973 |
| Sep | 108.5 mm (4.3 in) | 8 September 1985 |
| Oct | 130.3 mm (5.1 in) | 5 October 2005 |
| Nov | 58.9 mm (2.3 in) | 13 November 1964 |
| Dec | 32.8 mm (1.3 in) | 29 December 2025 |
Period of Record Coverage
1934 to 2025| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1934 | 274 | 75% | No |
| 1935 | 362 | 99% | Yes |
| 1936 | 363 | 99% | Yes |
| 1937 | 361 | 99% | Yes |
| 1938 | 341 | 93% | Yes |
| 1939 | 330 | 90% | Yes |
| 1940 | 360 | 98% | Yes |
| 1941 | 349 | 96% | Yes |
| 1942 | 355 | 97% | Yes |
| 1943 | 360 | 99% | Yes |
| 1944 | 364 | 99% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 347 | 95% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 353 | 96% | Yes |
| 1949 | 308 | 84% | No |
| 1950 | 360 | 99% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 364 | 99% | Yes |
| 1953 | 346 | 95% | Yes |
| 1954 | 358 | 98% | Yes |
| 1955 | 363 | 99% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 360 | 98% | Yes |
| 1965 | 353 | 97% | Yes |
| 1966 | 351 | 96% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 364 | 99% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 352 | 96% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 324 | 89% | No |
| 1984 | 320 | 87% | No |
| 1985 | 326 | 89% | No |
| 1986 | 365 | 100% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 363 | 99% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 330 | 90% | Yes |
| 1991 | 317 | 87% | No |
| 1992 | 364 | 99% | Yes |
| 1993 | 352 | 96% | Yes |
| 1994 | 335 | 92% | Yes |
| 1995 | 349 | 96% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 351 | 96% | Yes |
| 1998 | 352 | 96% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 340 | 93% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 347 | 95% | Yes |
| 2005 | 362 | 99% | Yes |
| 2006 | 349 | 96% | Yes |
| 2007 | 350 | 96% | Yes |
| 2008 | 362 | 99% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 349 | 96% | Yes |
| 2011 | 360 | 99% | Yes |
| 2012 | 347 | 95% | Yes |
| 2013 | 339 | 93% | Yes |
| 2014 | 339 | 93% | Yes |
| 2015 | 351 | 96% | Yes |
| 2016 | 339 | 93% | Yes |
| 2017 | 334 | 92% | Yes |
| 2018 | 360 | 99% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 59 | 16% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 April 2026 | Willow Rsvr, US | daily rain | 35.6 mm (1.4 in) | 3.8 mm (0.15 in) | 7 years | 16 of 100 (Routine) |
| 29 December 2025 | Willow Rsvr, US | monthly rain | 32.8 mm (1.3 in) | 0.8 mm (0.03 in) | 85 years | 45 of 100 (Notable) |
| 21 April 2025 | Willow Rsvr, US | daily rain | 27.2 mm (1.1 in) | 1.0 mm (0.04 in) | 48 years | 24 of 100 (Routine) |
| 31 March 2025 | Willow Rsvr, US | daily rain (Tie) | 15.5 mm (0.6 in) | tie | 7 years | 2 of 100 (Routine) |
| 30 March 2025 | Willow Rsvr, US | daily rain | 33.0 mm (1.3 in) | 12.7 mm (0.5 in) | 48 years | 44 of 100 (Notable) |
| 5 March 2025 | Willow Rsvr, US | daily rain | 32.0 mm (1.3 in) | 16.3 mm (0.6 in) | 46 years | 50 of 100 (Notable) |
| 29 December 2024 | Willow Rsvr, US | daily high min (Tie) | -1.7 C (28.9 F) | tie | 21 years | 3 of 100 (Routine) |
| 28 December 2024 | Willow Rsvr, US | daily high min | 1.1 C (34.0 F) | 0.5 C (0.9 F) | 21 years | 15 of 100 (Routine) |
| 28 December 2024 | Willow Rsvr, US | daily high max (Tie) | 5.0 C (41.0 F) | tie | 16 years | 3 of 100 (Routine) |
| 13 December 2024 | Willow Rsvr, US | daily low max | -17.8 C (0.0 F) | 3.4 C (6.1 F) | 81 years | 38 of 100 (Notable) |
| 19 November 2024 | Willow Rsvr, US | daily rain | 16.5 mm (0.6 in) | 3.8 mm (0.15 in) | 67 years | 20 of 100 (Routine) |
| 30 October 2024 | Willow Rsvr, US | daily high min | 12.2 C (54.0 F) | 0.5 C (0.9 F) | 68 years | 30 of 100 (Routine) |
| 29 September 2024 | Willow Rsvr, US | daily high max (Tie) | 26.1 C (79.0 F) | tie | 76 years | 7 of 100 (Routine) |
| 29 September 2024 | Willow Rsvr, US | daily high min (Tie) | 11.1 C (52.0 F) | tie | 37 years | 5 of 100 (Routine) |
| 27 August 2024 | Willow Rsvr, US | daily high min (Tie) | 20.0 C (68.0 F) | tie | 33 years | 4 of 100 (Routine) |
| 23 July 2024 | Willow Rsvr, US | daily rain | 24.1 mm (0.9 in) | 1.7 mm (0.07 in) | 46 years | 20 of 100 (Routine) |
| 25 June 2024 | Willow Rsvr, US | daily rain | 36.8 mm (1.4 in) | 8.9 mm (0.35 in) | 3 years | 16 of 100 (Routine) |
| 22 May 2024 | Willow Rsvr, US | daily rain | 31.8 mm (1.3 in) | 13.8 mm (0.5 in) | 54 years | 39 of 100 (Notable) |
| 3 April 2024 | Willow Rsvr, US | daily snowfall | 11.4 cm (4.5 in) | 6.3 cm (2.5 in) | 47 years | 35 of 100 (Notable) |
| 25 March 2024 | Willow Rsvr, US | daily snowfall | 20.6 cm (8.1 in) | 0.3 cm (0.1 in) | 28 years | 17 of 100 (Routine) |
Climate Trend
69 complete years, 1935 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1935 | 5.1 C | +0.53 C |
| 1936 | 4.9 C | +0.29 C |
| 1937 | 4.3 C | -0.30 C |
| 1938 | 5.6 C | +1.00 C |
| 1940 | 4.0 C | -0.63 C |
| 1942 | 5.0 C | +0.43 C |
| 1944 | 5.7 C | +1.08 C |
| 1945 | 4.2 C | -0.38 C |
| 1946 | 5.7 C | +1.08 C |
| 1947 | 5.0 C | +0.40 C |
| 1948 | 5.0 C | +0.42 C |
| 1950 | 3.1 C | -1.51 C |
| 1951 | 4.0 C | -0.61 C |
| 1952 | 5.7 C | +1.13 C |
| 1953 | 6.1 C | +1.44 C |
| 1954 | 5.2 C | +0.60 C |
| 1955 | 5.0 C | +0.42 C |
| 1956 | 4.8 C | +0.22 C |
| 1957 | 4.7 C | +0.13 C |
| 1958 | 4.7 C | +0.06 C |
| 1959 | 4.7 C | +0.04 C |
| 1960 | 4.9 C | +0.24 C |
| 1961 | 5.4 C | +0.74 C |
| 1962 | 4.7 C | +0.09 C |
| 1963 | 4.5 C | -0.16 C |
| 1964 | 4.9 C | +0.28 C |
| 1965 | 3.8 C | -0.78 C |
| 1967 | 4.1 C | -0.49 C |
| 1968 | 5.3 C | +0.72 C |
| 1969 | 4.7 C | +0.07 C |
| 1970 | 4.9 C | +0.27 C |
| 1971 | 4.5 C | -0.13 C |
| 1972 | 3.0 C | -1.60 C |
| 1973 | 4.9 C | +0.32 C |
| 1974 | 3.3 C | -1.34 C |
| 1975 | 4.0 C | -0.64 C |
| 1976 | 2.8 C | -1.80 C |
| 1977 | 4.2 C | -0.42 C |
| 1978 | 3.1 C | -1.48 C |
| 1979 | 2.6 C | -1.98 C |
| 1981 | 3.9 C | -0.67 C |
| 1982 | 3.2 C | -1.39 C |
| 1986 | 3.6 C | -0.98 C |
| 1987 | 5.1 C | +0.50 C |
| 1988 | 4.3 C | -0.35 C |
| 1989 | 2.9 C | -1.75 C |
| 1992 | 3.9 C | -0.70 C |
| 1996 | 2.8 C | -1.86 C |
| 1999 | 5.6 C | +0.94 C |
| 2000 | 4.9 C | +0.29 C |
| 2001 | 5.9 C | +1.24 C |
| 2003 | 4.5 C | -0.07 C |
| 2005 | 5.8 C | +1.21 C |
| 2007 | 5.1 C | +0.45 C |
| 2008 | 3.5 C | -1.14 C |
| 2009 | 4.1 C | -0.56 C |
| 2010 | 5.9 C | +1.27 C |
| 2011 | 4.8 C | +0.18 C |
| 2012 | 6.6 C | +1.96 C |
| 2013 | 3.4 C | -1.21 C |
| 2015 | 5.0 C | +0.37 C |
| 2016 | 5.9 C | +1.31 C |
| 2018 | 4.1 C | -0.50 C |
| 2019 | 3.6 C | -1.04 C |
| 2020 | 5.2 C | +0.54 C |
| 2021 | 5.7 C | +1.07 C |
| 2022 | 4.0 C | -0.59 C |
| 2023 | 6.0 C | +1.41 C |
| 2024 | 6.9 C | +2.27 C |
The fitted trend in annual mean temperature here over 1935 to 2024 is 0.02 C (-0.07 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.13 to 0.19) per decade. The slope is a straight line fitted to 69 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.02 C (-0.07 to 0.10) per decade | 0.03 F (-0.13 to 0.19) per decade | 1935 to 2024 | 69 | Not clearly different from zero |
| Mean daily maximum | -0.09 C (-0.18 to 0.00) per decade | -0.16 F (-0.32 to 0.00) per decade | 1935 to 2024 | 69 | Fall |
| Mean daily minimum | 0.12 C (0.02 to 0.22) per decade | 0.22 F (0.04 to 0.40) per decade | 1935 to 2024 | 69 | Rise |
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
1934 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 1936 | 32.2 C (90.0 F) | 92 |
| Coldest night (TNn) | -42.8 C (-45.0 F) | 1982 | -33.0 C (-27.5 F) | 92 |
| Wettest day (Rx1day) | 155.4 mm (6.1 in) | 1981 | 54.6 mm (2.1 in) | 93 |
| Wettest five days (Rx5day) | 191.5 mm (7.5 in) | 1994 | 80.3 mm (3.2 in) | 93 |
| Longest dry spell (CDD) | 44 days | 1953 | 20 days | 93 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1934 | 41.1 C (106.0 F) |
| 1935 | 36.7 C (98.1 F) |
| 1936 | 44.4 C (111.9 F) |
| 1937 | 35.6 C (96.1 F) |
| 1938 | 32.2 C (90.0 F) |
| 1939 | 32.8 C (91.0 F) |
| 1940 | 33.3 C (91.9 F) |
| 1941 | 34.4 C (93.9 F) |
| 1942 | 33.3 C (91.9 F) |
| 1943 | 32.8 C (91.0 F) |
| 1944 | 33.9 C (93.0 F) |
| 1945 | 33.3 C (91.9 F) |
| 1946 | 31.7 C (89.1 F) |
| 1947 | 37.8 C (100.0 F) |
| 1948 | 35.6 C (96.1 F) |
| 1949 | 33.3 C (91.9 F) |
| 1950 | 30.6 C (87.1 F) |
| 1951 | 30.0 C (86.0 F) |
| 1952 | 31.1 C (88.0 F) |
| 1953 | 34.4 C (93.9 F) |
| 1954 | 34.4 C (93.9 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 34.4 C (93.9 F) |
| 1958 | 31.7 C (89.1 F) |
| 1959 | 32.2 C (90.0 F) |
| 1960 | 31.7 C (89.1 F) |
| 1961 | 32.2 C (90.0 F) |
| 1962 | 30.6 C (87.1 F) |
| 1963 | 35.6 C (96.1 F) |
| 1964 | 35.0 C (95.0 F) |
| 1965 | 32.8 C (91.0 F) |
| 1966 | 33.3 C (91.9 F) |
| 1967 | 31.1 C (88.0 F) |
| 1968 | 32.2 C (90.0 F) |
| 1969 | 31.7 C (89.1 F) |
| 1970 | 33.3 C (91.9 F) |
| 1971 | 33.3 C (91.9 F) |
| 1972 | 31.1 C (88.0 F) |
| 1973 | 33.3 C (91.9 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 33.3 C (91.9 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 36.1 C (97.0 F) |
| 1978 | 31.7 C (89.1 F) |
| 1979 | 31.1 C (88.0 F) |
| 1980 | 32.2 C (90.0 F) |
| 1981 | 31.7 C (89.1 F) |
| 1982 | 31.1 C (88.0 F) |
| 1983 | 32.2 C (90.0 F) |
| 1984 | 33.9 C (93.0 F) |
| 1985 | 32.2 C (90.0 F) |
| 1986 | 33.3 C (91.9 F) |
| 1987 | 31.7 C (89.1 F) |
| 1988 | 34.4 C (93.9 F) |
| 1989 | 31.1 C (88.0 F) |
| 1990 | 30.6 C (87.1 F) |
| 1991 | 31.1 C (88.0 F) |
| 1992 | 30.0 C (86.0 F) |
| 1993 | 29.4 C (84.9 F) |
| 1994 | 30.0 C (86.0 F) |
| 1995 | 35.6 C (96.1 F) |
| 1996 | 31.1 C (88.0 F) |
| 1997 | 30.0 C (86.0 F) |
| 1998 | 32.8 C (91.0 F) |
| 1999 | 32.8 C (91.0 F) |
| 2000 | 31.7 C (89.1 F) |
| 2001 | 32.8 C (91.0 F) |
| 2002 | 33.3 C (91.9 F) |
| 2003 | 31.7 C (89.1 F) |
| 2004 | 28.9 C (84.0 F) |
| 2005 | 32.8 C (91.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 31.7 C (89.1 F) |
| 2008 | 30.6 C (87.1 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 32.2 C (90.0 F) |
| 2011 | 32.2 C (90.0 F) |
| 2012 | 33.3 C (91.9 F) |
| 2013 | 31.7 C (89.1 F) |
| 2014 | 28.9 C (84.0 F) |
| 2015 | 30.6 C (87.1 F) |
| 2016 | 31.1 C (88.0 F) |
| 2017 | 29.4 C (84.9 F) |
| 2018 | 32.2 C (90.0 F) |
| 2019 | 29.4 C (84.9 F) |
| 2020 | 32.2 C (90.0 F) |
| 2021 | 33.3 C (91.9 F) |
| 2022 | 32.8 C (91.0 F) |
| 2023 | 32.8 C (91.0 F) |
| 2024 | 30.0 C (86.0 F) |
| 2025 | 9.4 C (48.9 F) |
| 2026 | n/a |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1934 | -30.6 C (-23.1 F) |
| 1935 | -37.2 C (-35.0 F) |
| 1936 | -38.9 C (-38.0 F) |
| 1937 | -35.6 C (-32.1 F) |
| 1938 | -40.6 C (-41.1 F) |
| 1939 | -38.3 C (-36.9 F) |
| 1940 | -38.9 C (-38.0 F) |
| 1941 | -28.9 C (-20.0 F) |
| 1942 | -33.3 C (-27.9 F) |
| 1943 | -35.6 C (-32.1 F) |
| 1944 | -32.2 C (-26.0 F) |
| 1945 | -32.8 C (-27.0 F) |
| 1946 | -33.9 C (-29.0 F) |
| 1947 | -33.9 C (-29.0 F) |
| 1948 | -34.4 C (-29.9 F) |
| 1949 | -34.4 C (-29.9 F) |
| 1950 | -40.0 C (-40.0 F) |
| 1951 | -40.6 C (-41.1 F) |
| 1952 | -34.4 C (-29.9 F) |
| 1953 | -31.1 C (-24.0 F) |
| 1954 | -35.6 C (-32.1 F) |
| 1955 | -32.2 C (-26.0 F) |
| 1956 | -32.8 C (-27.0 F) |
| 1957 | -31.7 C (-25.1 F) |
| 1958 | -31.1 C (-24.0 F) |
| 1959 | -35.6 C (-32.1 F) |
| 1960 | -32.8 C (-27.0 F) |
| 1961 | -31.1 C (-24.0 F) |
| 1962 | -40.0 C (-40.0 F) |
| 1963 | -37.2 C (-35.0 F) |
| 1964 | -31.7 C (-25.1 F) |
| 1965 | -35.6 C (-32.1 F) |
| 1966 | -36.1 C (-33.0 F) |
| 1967 | -40.0 C (-40.0 F) |
| 1968 | -34.4 C (-29.9 F) |
| 1969 | -30.6 C (-23.1 F) |
| 1970 | -36.1 C (-33.0 F) |
| 1971 | -38.9 C (-38.0 F) |
| 1972 | -40.6 C (-41.1 F) |
| 1973 | -36.1 C (-33.0 F) |
| 1974 | -36.7 C (-34.1 F) |
| 1975 | -33.3 C (-27.9 F) |
| 1976 | -34.4 C (-29.9 F) |
| 1977 | -39.4 C (-38.9 F) |
| 1978 | -32.8 C (-27.0 F) |
| 1979 | -40.0 C (-40.0 F) |
| 1980 | -32.8 C (-27.0 F) |
| 1981 | -32.2 C (-26.0 F) |
| 1982 | -42.8 C (-45.0 F) |
| 1983 | -35.0 C (-31.0 F) |
| 1984 | -37.8 C (-36.0 F) |
| 1985 | -35.0 C (-31.0 F) |
| 1986 | -32.8 C (-27.0 F) |
| 1987 | -32.8 C (-27.0 F) |
| 1988 | -32.8 C (-27.0 F) |
| 1989 | -37.2 C (-35.0 F) |
| 1990 | -31.1 C (-24.0 F) |
| 1991 | -35.0 C (-31.0 F) |
| 1992 | -31.1 C (-24.0 F) |
| 1993 | -29.4 C (-20.9 F) |
| 1994 | -37.2 C (-35.0 F) |
| 1995 | -30.6 C (-23.1 F) |
| 1996 | -41.7 C (-43.1 F) |
| 1997 | -34.4 C (-29.9 F) |
| 1998 | -29.4 C (-20.9 F) |
| 1999 | -31.1 C (-24.0 F) |
| 2000 | -35.0 C (-31.0 F) |
| 2001 | -32.2 C (-26.0 F) |
| 2002 | -26.7 C (-16.1 F) |
| 2003 | -32.2 C (-26.0 F) |
| 2004 | -31.7 C (-25.1 F) |
| 2005 | -31.7 C (-25.1 F) |
| 2006 | -31.7 C (-25.1 F) |
| 2007 | -32.2 C (-26.0 F) |
| 2008 | -31.1 C (-24.0 F) |
| 2009 | -32.2 C (-26.0 F) |
| 2010 | -26.7 C (-16.1 F) |
| 2011 | -31.1 C (-24.0 F) |
| 2012 | -29.4 C (-20.9 F) |
| 2013 | -32.2 C (-26.0 F) |
| 2014 | -35.0 C (-31.0 F) |
| 2015 | -32.8 C (-27.0 F) |
| 2016 | -27.8 C (-18.0 F) |
| 2017 | -32.8 C (-27.0 F) |
| 2018 | -30.0 C (-22.0 F) |
| 2019 | -33.9 C (-29.0 F) |
| 2020 | -28.9 C (-20.0 F) |
| 2021 | -35.0 C (-31.0 F) |
| 2022 | -33.3 C (-27.9 F) |
| 2023 | -32.2 C (-26.0 F) |
| 2024 | -25.6 C (-14.1 F) |
| 2025 | -31.1 C (-24.0 F) |
| 2026 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1934 | 59.4 mm (2.3 in) |
| 1935 | 77.5 mm (3.1 in) |
| 1936 | 59.4 mm (2.3 in) |
| 1937 | 34.5 mm (1.4 in) |
| 1938 | 58.4 mm (2.3 in) |
| 1939 | 40.1 mm (1.6 in) |
| 1940 | 35.8 mm (1.4 in) |
| 1941 | 58.4 mm (2.3 in) |
| 1942 | 57.4 mm (2.3 in) |
| 1943 | 45.5 mm (1.8 in) |
| 1944 | 35.1 mm (1.4 in) |
| 1945 | 54.6 mm (2.1 in) |
| 1946 | 84.1 mm (3.3 in) |
| 1947 | 45.2 mm (1.8 in) |
| 1948 | 40.9 mm (1.6 in) |
| 1949 | 65.5 mm (2.6 in) |
| 1950 | 41.4 mm (1.6 in) |
| 1951 | 79.0 mm (3.1 in) |
| 1952 | 43.9 mm (1.7 in) |
| 1953 | 51.8 mm (2.0 in) |
| 1954 | 49.8 mm (2.0 in) |
| 1955 | 35.1 mm (1.4 in) |
| 1956 | 40.1 mm (1.6 in) |
| 1957 | 68.6 mm (2.7 in) |
| 1958 | 95.5 mm (3.8 in) |
| 1959 | 70.6 mm (2.8 in) |
| 1960 | 81.8 mm (3.2 in) |
| 1961 | 35.6 mm (1.4 in) |
| 1962 | 34.3 mm (1.4 in) |
| 1963 | 39.6 mm (1.6 in) |
| 1964 | 58.9 mm (2.3 in) |
| 1965 | 48.0 mm (1.9 in) |
| 1966 | 82.3 mm (3.2 in) |
| 1967 | 63.5 mm (2.5 in) |
| 1968 | 58.9 mm (2.3 in) |
| 1969 | 45.0 mm (1.8 in) |
| 1970 | 47.8 mm (1.9 in) |
| 1971 | 61.2 mm (2.4 in) |
| 1972 | 80.5 mm (3.2 in) |
| 1973 | 86.4 mm (3.4 in) |
| 1974 | 55.4 mm (2.2 in) |
| 1975 | 57.2 mm (2.3 in) |
| 1976 | 35.6 mm (1.4 in) |
| 1977 | 69.9 mm (2.8 in) |
| 1978 | 33.3 mm (1.3 in) |
| 1979 | 42.7 mm (1.7 in) |
| 1980 | 72.4 mm (2.9 in) |
| 1981 | 155.4 mm (6.1 in) |
| 1982 | 58.7 mm (2.3 in) |
| 1983 | 71.1 mm (2.8 in) |
| 1984 | 40.9 mm (1.6 in) |
| 1985 | 108.5 mm (4.3 in) |
| 1986 | 85.1 mm (3.4 in) |
| 1987 | 34.5 mm (1.4 in) |
| 1988 | 37.3 mm (1.5 in) |
| 1989 | 25.1 mm (1.0 in) |
| 1990 | 65.3 mm (2.6 in) |
| 1991 | 60.7 mm (2.4 in) |
| 1992 | 29.0 mm (1.1 in) |
| 1993 | 58.4 mm (2.3 in) |
| 1994 | 71.4 mm (2.8 in) |
| 1995 | 62.5 mm (2.5 in) |
| 1996 | 52.1 mm (2.1 in) |
| 1997 | 57.2 mm (2.3 in) |
| 1998 | 63.8 mm (2.5 in) |
| 1999 | 73.7 mm (2.9 in) |
| 2000 | 69.3 mm (2.7 in) |
| 2001 | 42.9 mm (1.7 in) |
| 2002 | 53.3 mm (2.1 in) |
| 2003 | 37.1 mm (1.5 in) |
| 2004 | 29.2 mm (1.1 in) |
| 2005 | 130.3 mm (5.1 in) |
| 2006 | 55.4 mm (2.2 in) |
| 2007 | 57.9 mm (2.3 in) |
| 2008 | 32.3 mm (1.3 in) |
| 2009 | 36.8 mm (1.4 in) |
| 2010 | 79.8 mm (3.1 in) |
| 2011 | 47.0 mm (1.9 in) |
| 2012 | 41.4 mm (1.6 in) |
| 2013 | 50.8 mm (2.0 in) |
| 2014 | 40.4 mm (1.6 in) |
| 2015 | 40.1 mm (1.6 in) |
| 2016 | 74.9 mm (2.9 in) |
| 2017 | 89.7 mm (3.5 in) |
| 2018 | 69.1 mm (2.7 in) |
| 2019 | 50.0 mm (2.0 in) |
| 2020 | 127.0 mm (5.0 in) |
| 2021 | 47.0 mm (1.9 in) |
| 2022 | 39.4 mm (1.6 in) |
| 2023 | 34.3 mm (1.4 in) |
| 2024 | 36.8 mm (1.4 in) |
| 2025 | 50.8 mm (2.0 in) |
| 2026 | 35.6 mm (1.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1934 | 104.9 mm (4.1 in) |
| 1935 | 101.4 mm (4.0 in) |
| 1936 | 91.4 mm (3.6 in) |
| 1937 | 62.7 mm (2.5 in) |
| 1938 | 56.1 mm (2.2 in) |
| 1939 | 51.8 mm (2.0 in) |
| 1940 | 70.3 mm (2.8 in) |
| 1941 | 121.8 mm (4.8 in) |
| 1942 | 125.1 mm (4.9 in) |
| 1943 | 87.2 mm (3.4 in) |
| 1944 | 49.8 mm (2.0 in) |
| 1945 | 56.9 mm (2.2 in) |
| 1946 | 129.4 mm (5.1 in) |
| 1947 | 69.1 mm (2.7 in) |
| 1948 | 56.1 mm (2.2 in) |
| 1949 | 113.2 mm (4.5 in) |
| 1950 | 45.7 mm (1.8 in) |
| 1951 | 83.5 mm (3.3 in) |
| 1952 | 52.5 mm (2.1 in) |
| 1953 | 78.8 mm (3.1 in) |
| 1954 | 74.9 mm (2.9 in) |
| 1955 | 84.7 mm (3.3 in) |
| 1956 | 75.3 mm (3.0 in) |
| 1957 | 86.7 mm (3.4 in) |
| 1958 | 115.1 mm (4.5 in) |
| 1959 | 89.5 mm (3.5 in) |
| 1960 | 131.4 mm (5.2 in) |
| 1961 | 70.6 mm (2.8 in) |
| 1962 | 68.3 mm (2.7 in) |
| 1963 | 54.1 mm (2.1 in) |
| 1964 | 76.5 mm (3.0 in) |
| 1965 | 54.9 mm (2.2 in) |
| 1966 | 111.2 mm (4.4 in) |
| 1967 | 70.4 mm (2.8 in) |
| 1968 | 103.9 mm (4.1 in) |
| 1969 | 56.3 mm (2.2 in) |
| 1970 | 82.0 mm (3.2 in) |
| 1971 | 135.1 mm (5.3 in) |
| 1972 | 96.8 mm (3.8 in) |
| 1973 | 106.9 mm (4.2 in) |
| 1974 | 94.2 mm (3.7 in) |
| 1975 | 86.1 mm (3.4 in) |
| 1976 | 38.4 mm (1.5 in) |
| 1977 | 117.9 mm (4.6 in) |
| 1978 | 107.4 mm (4.2 in) |
| 1979 | 92.7 mm (3.6 in) |
| 1980 | 106.0 mm (4.2 in) |
| 1981 | 187.2 mm (7.4 in) |
| 1982 | 93.8 mm (3.7 in) |
| 1983 | 104.2 mm (4.1 in) |
| 1984 | 72.0 mm (2.8 in) |
| 1985 | 113.3 mm (4.5 in) |
| 1986 | 95.0 mm (3.7 in) |
| 1987 | 57.1 mm (2.2 in) |
| 1988 | 65.5 mm (2.6 in) |
| 1989 | 63.2 mm (2.5 in) |
| 1990 | 62.8 mm (2.5 in) |
| 1991 | 78.2 mm (3.1 in) |
| 1992 | 55.0 mm (2.2 in) |
| 1993 | 102.9 mm (4.1 in) |
| 1994 | 191.5 mm (7.5 in) |
| 1995 | 92.2 mm (3.6 in) |
| 1996 | 80.3 mm (3.2 in) |
| 1997 | 77.2 mm (3.0 in) |
| 1998 | 75.8 mm (3.0 in) |
| 1999 | 82.1 mm (3.2 in) |
| 2000 | 92.7 mm (3.6 in) |
| 2001 | 63.3 mm (2.5 in) |
| 2002 | 87.1 mm (3.4 in) |
| 2003 | 86.2 mm (3.4 in) |
| 2004 | 57.6 mm (2.3 in) |
| 2005 | 146.0 mm (5.7 in) |
| 2006 | 140.7 mm (5.5 in) |
| 2007 | 57.9 mm (2.3 in) |
| 2008 | 38.7 mm (1.5 in) |
| 2009 | 53.5 mm (2.1 in) |
| 2010 | 161.3 mm (6.4 in) |
| 2011 | 17.8 mm (0.7 in) |
| 2012 | 70.8 mm (2.8 in) |
| 2013 | 96.2 mm (3.8 in) |
| 2014 | 70.6 mm (2.8 in) |
| 2015 | 50.2 mm (2.0 in) |
| 2016 | 113.9 mm (4.5 in) |
| 2017 | 116.1 mm (4.6 in) |
| 2018 | 125.5 mm (4.9 in) |
| 2019 | 69.4 mm (2.7 in) |
| 2020 | 140.2 mm (5.5 in) |
| 2021 | 62.7 mm (2.5 in) |
| 2022 | 60.2 mm (2.4 in) |
| 2023 | 56.6 mm (2.2 in) |
| 2024 | 58.6 mm (2.3 in) |
| 2025 | 61.4 mm (2.4 in) |
| 2026 | 47.8 mm (1.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1934 | 15 days |
| 1935 | 14 days |
| 1936 | 21 days |
| 1937 | 14 days |
| 1938 | 8 days |
| 1939 | 21 days |
| 1940 | 13 days |
| 1941 | 27 days |
| 1942 | 20 days |
| 1943 | 31 days |
| 1944 | 26 days |
| 1945 | 16 days |
| 1946 | 21 days |
| 1947 | 22 days |
| 1948 | 17 days |
| 1949 | 21 days |
| 1950 | 19 days |
| 1951 | 21 days |
| 1952 | 34 days |
| 1953 | 44 days |
| 1954 | 25 days |
| 1955 | 19 days |
| 1956 | 19 days |
| 1957 | 22 days |
| 1958 | 33 days |
| 1959 | 23 days |
| 1960 | 26 days |
| 1961 | 30 days |
| 1962 | 26 days |
| 1963 | 19 days |
| 1964 | 16 days |
| 1965 | 18 days |
| 1966 | 24 days |
| 1967 | 25 days |
| 1968 | 13 days |
| 1969 | 24 days |
| 1970 | 20 days |
| 1971 | 19 days |
| 1972 | 17 days |
| 1973 | 17 days |
| 1974 | 21 days |
| 1975 | 21 days |
| 1976 | 20 days |
| 1977 | 15 days |
| 1978 | 27 days |
| 1979 | 18 days |
| 1980 | 28 days |
| 1981 | 32 days |
| 1982 | 22 days |
| 1983 | 23 days |
| 1984 | 21 days |
| 1985 | 18 days |
| 1986 | 22 days |
| 1987 | 29 days |
| 1988 | 25 days |
| 1989 | 22 days |
| 1990 | 23 days |
| 1991 | 27 days |
| 1992 | 18 days |
| 1993 | 27 days |
| 1994 | 19 days |
| 1995 | 19 days |
| 1996 | 19 days |
| 1997 | 22 days |
| 1998 | 24 days |
| 1999 | 23 days |
| 2000 | 16 days |
| 2001 | 15 days |
| 2002 | 16 days |
| 2003 | 14 days |
| 2004 | 13 days |
| 2005 | 16 days |
| 2006 | 16 days |
| 2007 | 30 days |
| 2008 | 18 days |
| 2009 | 25 days |
| 2010 | 13 days |
| 2011 | 1 day |
| 2012 | 13 days |
| 2013 | 14 days |
| 2014 | 16 days |
| 2015 | 14 days |
| 2016 | 18 days |
| 2017 | 15 days |
| 2018 | 21 days |
| 2019 | 21 days |
| 2020 | 36 days |
| 2021 | 18 days |
| 2022 | 15 days |
| 2023 | 14 days |
| 2024 | 32 days |
| 2025 | 18 days |
| 2026 | 13 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
69 years with a frostAcross 69 years with a frost, the median last spring frost at Willow Rsvr falls on 27 May and the median first autumn frost on 18 September, which leaves a median of 113 days between them.
In 1979 to 2024 the median growing season was 131 days. That is 32 days more than in 1935 to 1969.
Fitted over all years, the growing season changes by +6.8 days per decade at this station.
| Measure | Median, all years | Earliest period (1935 to 1969) | Recent period (1979 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 27 May | 5 June | 21 May | 15 days earlier | -2.8 days per decade |
| First autumn frost | 18 September | 12 September | 29 September | 17 days later | +4.0 days per decade |
| Growing days | 113 days | 99 days | 131 days | 32 days more | +6.8 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
79 years, 1935 to 2024A day with at least 53.2 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 142.8 mm (5.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 53.2 mm (2.1 in) | |
| 5 years | 73.6 mm (2.9 in) | |
| 10 years | 88.5 mm (3.5 in) | |
| 25 years | 108.9 mm (4.3 in) | |
| 50 years | 125.3 mm (4.9 in) | |
| 100 years | 142.8 mm (5.6 in) | Longer than the 79 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, 79 years of values from 1935 to 2024.
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: 155.4 mm (6.1 in) in 1981; 130.3 mm (5.1 in) in 2005; 127.0 mm (5.0 in) in 2020.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Willow Rsvr, at 1963. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1963 ran 0.3 C (0.6 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1963 | -0.3 | -0.6 | likely | 5 |
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 2024 against 1961 to 1990Over 2008 to 2024, Willow Rsvr had a mean temperature of 5.0 C (40.9 F) and 820.7 mm (32.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Chalk River Aecl (Canada, 966 km away), Alberta Ford For Ctr (United States, 148 km away) and North Bay (Canada, 804 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Chalk River Aecl | Canada | 966 km (600 mi) | 4.8 C (40.6 F) | 822.1 mm (32.4 in) | 0.61 |
| Alberta Ford For Ctr | United States | 148 km (92 mi) | 4.7 C (40.5 F) | 846.8 mm (33.3 in) | 0.63 |
| North Bay | Canada | 804 km (500 mi) | 4.6 C (40.3 F) | 837.2 mm (33.0 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
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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).