Williston Exp Farm Weather Records (USC00329430)
Record envelope, standing records and threshold days for Williston Exp Farm (USC00329430), North Dakota, United States, with 71 years of record.
Key Facts for Williston Exp Farm
- Williston Exp Farm (USC00329430) is a weather station in North Dakota, United States at 48.14 latitude and -103.74 longitude, 642 m (2,105 ft) above sea level.
- The station reports from 1956 to 2026, 71 years of record.
- 1,464 records set at Williston Exp Farm still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Williston Exp Farm set a daily record high minimum temperature of 21.7 C (71.1 F) on 26 July 2026.
About the Station
- Location: North Dakota, United States, 48.14 latitude, -103.74 longitude.
- Elevation: 642 m (2,105 ft).
- Period of record: 1956 to 2026, 71 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
9 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 14.4 C (57.9 F) | -38.3 C (-36.9 F) | 6.1 C (43.0 F) | -33.9 C (-29.0 F) |
| Feb | 18.3 C (64.9 F) | -40.0 C (-40.0 F) | 10.6 C (51.1 F) | -23.3 C (-9.9 F) |
| Mar | 25.6 C (78.1 F) | -33.3 C (-27.9 F) | 23.3 C (73.9 F) | -18.3 C (-0.9 F) |
| Apr | 33.9 C (93.0 F) | -25.6 C (-14.1 F) | 29.4 C (84.9 F) | -10.6 C (12.9 F) |
| May | 38.9 C (102.0 F) | -10.0 C (14.0 F) | 33.9 C (93.0 F) | -5.0 C (23.0 F) |
| Jun | 40.6 C (105.1 F) | -1.1 C (30.0 F) | 34.4 C (93.9 F) | 7.2 C (45.0 F) |
| Jul | 42.2 C (108.0 F) | 1.7 C (35.1 F) | 41.7 C (107.1 F) | 12.2 C (54.0 F) |
| Aug | 41.1 C (106.0 F) | 1.7 C (35.1 F) | n/a | n/a |
| Sep | 40.6 C (105.1 F) | -8.3 C (17.1 F) | n/a | n/a |
| Oct | 33.3 C (91.9 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Nov | 24.4 C (75.9 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Dec | 15.0 C (59.0 F) | -40.0 C (-40.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1956 | 8 |
| 1957 | 22 |
| 1958 | 33 |
| 1959 | 35 |
| 1960 | 20 |
| 1961 | 13 |
| 1962 | 24 |
| 1963 | 19 |
| 1964 | 30 |
| 1965 | 37 |
| 1966 | 28 |
| 1967 | 23 |
| 1968 | 26 |
| 1969 | 25 |
| 1970 | 12 |
| 1971 | 7 |
| 1972 | 33 |
| 1973 | 15 |
| 1974 | 20 |
| 1975 | 17 |
| 1976 | 8 |
| 1977 | 21 |
| 1978 | 17 |
| 1979 | 18 |
| 1980 | 24 |
| 1981 | 18 |
| 1982 | 22 |
| 1983 | 26 |
| 1984 | 20 |
| 1985 | 30 |
| 1986 | 15 |
| 1987 | 23 |
| 1988 | 40 |
| 1989 | 25 |
| 1990 | 14 |
| 1991 | 29 |
| 1992 | 38 |
| 1993 | 7 |
| 1994 | 7 |
| 1995 | 17 |
| 1996 | 21 |
| 1997 | 17 |
| 1998 | 21 |
| 1999 | 26 |
| 2000 | 10 |
| 2001 | 23 |
| 2002 | 25 |
| 2003 | 25 |
| 2004 | 17 |
| 2005 | 28 |
| 2006 | 24 |
| 2007 | 15 |
| 2008 | 9 |
| 2009 | 20 |
| 2010 | 6 |
| 2011 | 8 |
| 2012 | 30 |
| 2013 | 13 |
| 2014 | 14 |
| 2015 | 23 |
| 2016 | 12 |
| 2017 | 20 |
| 2018 | 16 |
| 2019 | 22 |
| 2020 | 30 |
| 2021 | 34 |
| 2022 | 8 |
| 2023 | 20 |
| 2024 | 18 |
| 2025 | 20 |
| 2026 | 23 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1988-07-27 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 1993-07-03 | Record daily precipitation | Record daily precipitation 96.5 mm (3.8 in) |
| 2004-01-31 | Record snow depth | Record snow depth 68.6 cm (27.0 in) |
Wettest Day of Each Month
Jul: 96.5 mm (3.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 25.4 mm (1.0 in) | 2 January 2017 |
| Feb | 22.9 mm (0.9 in) | 25 February 1998 |
| Mar | 32.5 mm (1.3 in) | 17 March 2003 |
| Apr | 38.6 mm (1.5 in) | 20 April 1967 |
| May | 88.4 mm (3.5 in) | 13 May 2022 |
| Jun | 71.4 mm (2.8 in) | 8 June 1994 |
| Jul | 96.5 mm (3.8 in) | 3 July 1993 |
| Aug | 95.8 mm (3.8 in) | 22 August 1993 |
| Sep | 55.9 mm (2.2 in) | 7 September 2019 |
| Oct | 54.4 mm (2.1 in) | 2 October 1971 |
| Nov | 36.3 mm (1.4 in) | 1 November 2000 |
| Dec | 22.9 mm (0.9 in) | 31 December 1975 |
Period of Record Coverage
1956 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1956 | 160 | 44% | No |
| 1957 | 357 | 98% | Yes |
| 1958 | 353 | 97% | Yes |
| 1959 | 303 | 83% | No |
| 1960 | 358 | 98% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 360 | 99% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 364 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 362 | 99% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 363 | 99% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 361 | 99% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 362 | 99% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 363 | 99% | Yes |
| 1992 | 361 | 99% | Yes |
| 1993 | 356 | 98% | Yes |
| 1994 | 355 | 97% | Yes |
| 1995 | 360 | 99% | Yes |
| 1996 | 360 | 98% | Yes |
| 1997 | 333 | 91% | Yes |
| 1998 | 350 | 96% | Yes |
| 1999 | 361 | 99% | Yes |
| 2000 | 328 | 90% | No |
| 2001 | 360 | 99% | Yes |
| 2002 | 359 | 98% | Yes |
| 2003 | 358 | 98% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 360 | 98% | Yes |
| 2013 | 359 | 98% | Yes |
| 2014 | 363 | 99% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 361 | 99% | Yes |
| 2018 | 353 | 97% | Yes |
| 2019 | 349 | 96% | Yes |
| 2020 | 364 | 99% | Yes |
| 2021 | 361 | 99% | Yes |
| 2022 | 240 | 66% | No |
| 2023 | 330 | 90% | Yes |
| 2024 | 363 | 99% | Yes |
| 2025 | 304 | 83% | No |
| 2026 | 207 | 57% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 26 July 2026 | Williston Exp Farm, US | daily high min | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 1 year | 10 of 100 (Routine) |
| 13 July 2026 | Williston Exp Farm, US | daily high max | 41.7 C (107.1 F) | 3.9 C (7.0 F) | 40 years | 27 of 100 (Routine) |
| 13 July 2026 | Williston Exp Farm, US | daily high min | 22.2 C (72.0 F) | 2.2 C (4.0 F) | 20 years | 19 of 100 (Routine) |
| 12 July 2026 | Williston Exp Farm, US | daily high max | 41.7 C (107.1 F) | 3.9 C (7.0 F) | 57 years | 32 of 100 (Routine) |
| 29 May 2026 | Williston Exp Farm, US | daily high min | 18.9 C (66.0 F) | 3.3 C (5.9 F) | 23 years | 20 of 100 (Routine) |
| 28 May 2026 | Williston Exp Farm, US | daily high min | 18.9 C (66.0 F) | 3.9 C (7.0 F) | 45 years | 28 of 100 (Routine) |
| 27 May 2026 | Williston Exp Farm, US | daily high min | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 28 years | 17 of 100 (Routine) |
| 26 May 2026 | Williston Exp Farm, US | daily high min | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 20 years | 14 of 100 (Routine) |
| 25 May 2026 | Williston Exp Farm, US | daily high max | 33.3 C (91.9 F) | 0.5 C (0.9 F) | 48 years | 21 of 100 (Routine) |
| 18 May 2026 | Williston Exp Farm, US | daily low max | 6.7 C (44.1 F) | 2.7 C (4.9 F) | 7 years | 13 of 100 (Routine) |
| 6 May 2026 | Williston Exp Farm, US | daily low min (Tie) | -5.0 C (23.0 F) | tie | 53 years | 5 of 100 (Routine) |
| 25 April 2026 | Williston Exp Farm, US | daily low max | 1.7 C (35.1 F) | 2.7 C (4.9 F) | 65 years | 29 of 100 (Routine) |
| 22 April 2026 | Williston Exp Farm, US | daily high min | 11.7 C (53.1 F) | 1.1 C (2.0 F) | 36 years | 20 of 100 (Routine) |
| 18 April 2026 | Williston Exp Farm, US | daily low min | -10.6 C (12.9 F) | 0.6 C (1.1 F) | 60 years | 26 of 100 (Routine) |
| 12 April 2026 | Williston Exp Farm, US | daily high min | 8.9 C (48.0 F) | 0.6 C (1.1 F) | 0 years | 8 of 100 (Routine) |
| 25 March 2026 | Williston Exp Farm, US | daily high min (Tie) | 4.4 C (39.9 F) | tie | 19 years | 3 of 100 (Routine) |
| 21 March 2026 | Williston Exp Farm, US | daily high min (Tie) | 2.2 C (36.0 F) | tie | 4 years | 2 of 100 (Routine) |
| 20 March 2026 | Williston Exp Farm, US | daily high max | 22.2 C (72.0 F) | 0.5 C (0.9 F) | 19 years | 12 of 100 (Routine) |
| 20 March 2026 | Williston Exp Farm, US | daily high min | 4.4 C (39.9 F) | 1.1 C (2.0 F) | 4 years | 9 of 100 (Routine) |
| 19 March 2026 | Williston Exp Farm, US | daily high max | 23.3 C (73.9 F) | 2.2 C (4.0 F) | 35 years | 19 of 100 (Routine) |
Climate Trend
61 complete years, 1957 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1957 | 4.6 C | -1.65 C |
| 1960 | 4.7 C | -1.55 C |
| 1961 | 6.1 C | -0.20 C |
| 1962 | 5.5 C | -0.78 C |
| 1963 | 6.5 C | +0.22 C |
| 1964 | 5.2 C | -1.06 C |
| 1965 | 4.1 C | -2.20 C |
| 1966 | 4.9 C | -1.39 C |
| 1967 | 5.2 C | -1.08 C |
| 1968 | 5.5 C | -0.74 C |
| 1969 | 5.1 C | -1.22 C |
| 1970 | 4.6 C | -1.65 C |
| 1971 | 5.3 C | -1.01 C |
| 1972 | 4.0 C | -2.28 C |
| 1973 | 6.6 C | +0.35 C |
| 1974 | 6.2 C | -0.06 C |
| 1975 | 5.0 C | -1.31 C |
| 1976 | 6.3 C | +0.02 C |
| 1977 | 6.0 C | -0.27 C |
| 1978 | 4.3 C | -2.00 C |
| 1979 | 4.5 C | -1.79 C |
| 1980 | 6.5 C | +0.20 C |
| 1981 | 7.9 C | +1.66 C |
| 1982 | 4.0 C | -2.25 C |
| 1983 | 6.3 C | +0.04 C |
| 1984 | 6.5 C | +0.22 C |
| 1985 | 5.0 C | -1.26 C |
| 1986 | 7.0 C | +0.69 C |
| 1987 | 8.9 C | +2.60 C |
| 1988 | 7.7 C | +1.43 C |
| 1989 | 5.9 C | -0.39 C |
| 1990 | 7.5 C | +1.19 C |
| 1991 | 7.4 C | +1.11 C |
| 1992 | 7.1 C | +0.81 C |
| 1993 | 5.1 C | -1.14 C |
| 1994 | 6.0 C | -0.28 C |
| 1995 | 6.0 C | -0.30 C |
| 1996 | 4.2 C | -2.09 C |
| 1998 | 7.8 C | +1.55 C |
| 1999 | 7.8 C | +1.56 C |
| 2001 | 7.5 C | +1.18 C |
| 2002 | 6.3 C | +0.06 C |
| 2003 | 6.8 C | +0.48 C |
| 2004 | 6.4 C | +0.13 C |
| 2005 | 7.7 C | +1.40 C |
| 2006 | 8.5 C | +2.17 C |
| 2007 | 7.9 C | +1.65 C |
| 2008 | 6.5 C | +0.26 C |
| 2009 | 5.6 C | -0.70 C |
| 2010 | 6.2 C | -0.08 C |
| 2011 | 6.5 C | +0.26 C |
| 2012 | 8.6 C | +2.28 C |
| 2013 | 5.5 C | -0.77 C |
| 2014 | 5.8 C | -0.48 C |
| 2015 | 8.3 C | +2.05 C |
| 2016 | 8.9 C | +2.57 C |
| 2017 | 7.5 C | +1.19 C |
| 2019 | 4.9 C | -1.37 C |
| 2020 | 7.2 C | +0.94 C |
| 2021 | 8.0 C | +1.68 C |
| 2024 | 7.8 C | +1.53 C |
The annual mean temperature here has risen by 0.4 C (0.2 to 0.5) per decade over 1957 to 2024. In Fahrenheit: 0.7 F (0.4 to 1.0) per decade. The slope is a straight line fitted to 61 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.4 C (0.2 to 0.5) per decade | 0.7 F (0.4 to 1.0) per decade | 1957 to 2024 | 61 | Rise |
| Mean daily maximum | 0.4 C (0.2 to 0.6) per decade | 0.7 F (0.4 to 1.1) per decade | 1957 to 2024 | 61 | Rise |
| Mean daily minimum | 0.4 C (0.2 to 0.5) per decade | 0.7 F (0.4 to 0.9) per decade | 1957 to 2024 | 61 | 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
1956 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1988 | 37.8 C (100.0 F) | 71 |
| Coldest night (TNn) | -40.0 C (-40.0 F) | 1962 | -33.9 C (-29.0 F) | 71 |
| Wettest day (Rx1day) | 96.5 mm (3.8 in) | 1993 | 36.6 mm (1.4 in) | 71 |
| Wettest five days (Rx5day) | 146.5 mm (5.8 in) | 1997 | 57.9 mm (2.3 in) | 71 |
| Longest dry spell (CDD) | 78 days | 1963 | 39 days | 71 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1956 | 35.0 C (95.0 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 40.0 C (104.0 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 40.6 C (105.1 F) |
| 1961 | 36.7 C (98.1 F) |
| 1962 | 36.1 C (97.0 F) |
| 1963 | 39.4 C (102.9 F) |
| 1964 | 38.9 C (102.0 F) |
| 1965 | 39.4 C (102.9 F) |
| 1966 | 39.4 C (102.9 F) |
| 1967 | 36.7 C (98.1 F) |
| 1968 | 37.8 C (100.0 F) |
| 1969 | 38.9 C (102.0 F) |
| 1970 | 36.7 C (98.1 F) |
| 1971 | 38.3 C (100.9 F) |
| 1972 | 37.2 C (99.0 F) |
| 1973 | 37.2 C (99.0 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 39.4 C (102.9 F) |
| 1976 | 40.6 C (105.1 F) |
| 1977 | 35.6 C (96.1 F) |
| 1978 | 39.4 C (102.9 F) |
| 1979 | 38.3 C (100.9 F) |
| 1980 | 40.0 C (104.0 F) |
| 1981 | 39.4 C (102.9 F) |
| 1982 | 35.0 C (95.0 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 35.6 C (96.1 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 42.2 C (108.0 F) |
| 1989 | 41.7 C (107.1 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 37.2 C (99.0 F) |
| 1992 | 36.7 C (98.1 F) |
| 1993 | 32.8 C (91.0 F) |
| 1994 | 37.2 C (99.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 37.8 C (100.0 F) |
| 1997 | 37.2 C (99.0 F) |
| 1998 | 38.9 C (102.0 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 38.3 C (100.9 F) |
| 2001 | 36.7 C (98.1 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 38.9 C (102.0 F) |
| 2004 | 37.8 C (100.0 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 38.3 C (100.9 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 37.8 C (100.0 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 36.1 C (97.0 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 37.8 C (100.0 F) |
| 2013 | 34.4 C (93.9 F) |
| 2014 | 36.7 C (98.1 F) |
| 2015 | 40.0 C (104.0 F) |
| 2016 | 36.7 C (98.1 F) |
| 2017 | 38.3 C (100.9 F) |
| 2018 | 41.1 C (106.0 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 38.9 C (102.0 F) |
| 2021 | 39.4 C (102.9 F) |
| 2022 | 37.8 C (100.0 F) |
| 2023 | 37.8 C (100.0 F) |
| 2024 | 41.1 C (106.0 F) |
| 2025 | 38.3 C (100.9 F) |
| 2026 | 41.7 C (107.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1956 | -32.8 C (-27.0 F) |
| 1957 | -37.8 C (-36.0 F) |
| 1958 | -31.7 C (-25.1 F) |
| 1959 | -36.7 C (-34.1 F) |
| 1960 | -33.3 C (-27.9 F) |
| 1961 | -33.9 C (-29.0 F) |
| 1962 | -40.0 C (-40.0 F) |
| 1963 | -33.9 C (-29.0 F) |
| 1964 | -32.8 C (-27.0 F) |
| 1965 | -35.6 C (-32.1 F) |
| 1966 | -36.1 C (-33.0 F) |
| 1967 | -36.7 C (-34.1 F) |
| 1968 | -37.8 C (-36.0 F) |
| 1969 | -36.7 C (-34.1 F) |
| 1970 | -36.7 C (-34.1 F) |
| 1971 | -32.8 C (-27.0 F) |
| 1972 | -36.1 C (-33.0 F) |
| 1973 | -32.8 C (-27.0 F) |
| 1974 | -36.7 C (-34.1 F) |
| 1975 | -30.0 C (-22.0 F) |
| 1976 | -35.0 C (-31.0 F) |
| 1977 | -38.9 C (-38.0 F) |
| 1978 | -33.3 C (-27.9 F) |
| 1979 | -33.9 C (-29.0 F) |
| 1980 | -34.4 C (-29.9 F) |
| 1981 | -30.6 C (-23.1 F) |
| 1982 | -38.3 C (-36.9 F) |
| 1983 | -40.0 C (-40.0 F) |
| 1984 | -34.4 C (-29.9 F) |
| 1985 | -34.4 C (-29.9 F) |
| 1986 | -34.4 C (-29.9 F) |
| 1987 | -25.0 C (-13.0 F) |
| 1988 | -33.9 C (-29.0 F) |
| 1989 | -37.8 C (-36.0 F) |
| 1990 | -35.6 C (-32.1 F) |
| 1991 | -30.0 C (-22.0 F) |
| 1992 | -32.2 C (-26.0 F) |
| 1993 | -32.2 C (-26.0 F) |
| 1994 | -35.0 C (-31.0 F) |
| 1995 | -28.3 C (-18.9 F) |
| 1996 | -37.8 C (-36.0 F) |
| 1997 | -35.0 C (-31.0 F) |
| 1998 | -34.4 C (-29.9 F) |
| 1999 | -30.6 C (-23.1 F) |
| 2000 | -29.4 C (-20.9 F) |
| 2001 | -27.2 C (-17.0 F) |
| 2002 | -29.4 C (-20.9 F) |
| 2003 | -33.3 C (-27.9 F) |
| 2004 | -33.9 C (-29.0 F) |
| 2005 | -35.6 C (-32.1 F) |
| 2006 | -30.6 C (-23.1 F) |
| 2007 | -28.9 C (-20.0 F) |
| 2008 | -32.8 C (-27.0 F) |
| 2009 | -33.9 C (-29.0 F) |
| 2010 | -32.8 C (-27.0 F) |
| 2011 | -32.8 C (-27.0 F) |
| 2012 | -28.9 C (-20.0 F) |
| 2013 | -33.3 C (-27.9 F) |
| 2014 | -31.1 C (-24.0 F) |
| 2015 | -29.4 C (-20.9 F) |
| 2016 | -32.2 C (-26.0 F) |
| 2017 | -34.4 C (-29.9 F) |
| 2018 | -33.9 C (-29.0 F) |
| 2019 | -36.7 C (-34.1 F) |
| 2020 | -30.6 C (-23.1 F) |
| 2021 | -34.4 C (-29.9 F) |
| 2022 | -32.8 C (-27.0 F) |
| 2023 | -28.9 C (-20.0 F) |
| 2024 | -36.7 C (-34.1 F) |
| 2025 | -35.0 C (-31.0 F) |
| 2026 | -33.9 C (-29.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1956 | 13.5 mm (0.5 in) |
| 1957 | 21.6 mm (0.9 in) |
| 1958 | 26.9 mm (1.1 in) |
| 1959 | 33.3 mm (1.3 in) |
| 1960 | 56.6 mm (2.2 in) |
| 1961 | 16.5 mm (0.6 in) |
| 1962 | 49.5 mm (1.9 in) |
| 1963 | 50.3 mm (2.0 in) |
| 1964 | 43.7 mm (1.7 in) |
| 1965 | 63.5 mm (2.5 in) |
| 1966 | 38.9 mm (1.5 in) |
| 1967 | 38.6 mm (1.5 in) |
| 1968 | 42.9 mm (1.7 in) |
| 1969 | 30.5 mm (1.2 in) |
| 1970 | 34.0 mm (1.3 in) |
| 1971 | 54.4 mm (2.1 in) |
| 1972 | 45.5 mm (1.8 in) |
| 1973 | 36.1 mm (1.4 in) |
| 1974 | 32.5 mm (1.3 in) |
| 1975 | 40.6 mm (1.6 in) |
| 1976 | 42.9 mm (1.7 in) |
| 1977 | 28.2 mm (1.1 in) |
| 1978 | 38.1 mm (1.5 in) |
| 1979 | 17.3 mm (0.7 in) |
| 1980 | 34.5 mm (1.4 in) |
| 1981 | 52.1 mm (2.1 in) |
| 1982 | 43.2 mm (1.7 in) |
| 1983 | 42.4 mm (1.7 in) |
| 1984 | 22.4 mm (0.9 in) |
| 1985 | 24.9 mm (1.0 in) |
| 1986 | 52.8 mm (2.1 in) |
| 1987 | 40.1 mm (1.6 in) |
| 1988 | 50.3 mm (2.0 in) |
| 1989 | 46.2 mm (1.8 in) |
| 1990 | 32.5 mm (1.3 in) |
| 1991 | 38.4 mm (1.5 in) |
| 1992 | 30.2 mm (1.2 in) |
| 1993 | 96.5 mm (3.8 in) |
| 1994 | 71.4 mm (2.8 in) |
| 1995 | 43.7 mm (1.7 in) |
| 1996 | 36.6 mm (1.4 in) |
| 1997 | 74.9 mm (2.9 in) |
| 1998 | 27.4 mm (1.1 in) |
| 1999 | 21.3 mm (0.8 in) |
| 2000 | 36.3 mm (1.4 in) |
| 2001 | 36.6 mm (1.4 in) |
| 2002 | 36.6 mm (1.4 in) |
| 2003 | 32.5 mm (1.3 in) |
| 2004 | 33.3 mm (1.3 in) |
| 2005 | 32.0 mm (1.3 in) |
| 2006 | 34.3 mm (1.4 in) |
| 2007 | 32.8 mm (1.3 in) |
| 2008 | 29.2 mm (1.1 in) |
| 2009 | 42.2 mm (1.7 in) |
| 2010 | 35.8 mm (1.4 in) |
| 2011 | 52.6 mm (2.1 in) |
| 2012 | 51.6 mm (2.0 in) |
| 2013 | 35.8 mm (1.4 in) |
| 2014 | 23.4 mm (0.9 in) |
| 2015 | 52.1 mm (2.1 in) |
| 2016 | 27.4 mm (1.1 in) |
| 2017 | 32.3 mm (1.3 in) |
| 2018 | 40.4 mm (1.6 in) |
| 2019 | 55.9 mm (2.2 in) |
| 2020 | 24.1 mm (0.9 in) |
| 2021 | 65.8 mm (2.6 in) |
| 2022 | 88.4 mm (3.5 in) |
| 2023 | 41.4 mm (1.6 in) |
| 2024 | 22.9 mm (0.9 in) |
| 2025 | 40.1 mm (1.6 in) |
| 2026 | 22.9 mm (0.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1956 | 22.4 mm (0.9 in) |
| 1957 | 42.4 mm (1.7 in) |
| 1958 | 30.7 mm (1.2 in) |
| 1959 | 76.2 mm (3.0 in) |
| 1960 | 61.7 mm (2.4 in) |
| 1961 | 30.8 mm (1.2 in) |
| 1962 | 60.2 mm (2.4 in) |
| 1963 | 66.3 mm (2.6 in) |
| 1964 | 62.7 mm (2.5 in) |
| 1965 | 105.9 mm (4.2 in) |
| 1966 | 43.8 mm (1.7 in) |
| 1967 | 45.2 mm (1.8 in) |
| 1968 | 57.1 mm (2.2 in) |
| 1969 | 77.7 mm (3.1 in) |
| 1970 | 52.4 mm (2.1 in) |
| 1971 | 65.3 mm (2.6 in) |
| 1972 | 48.8 mm (1.9 in) |
| 1973 | 86.2 mm (3.4 in) |
| 1974 | 46.2 mm (1.8 in) |
| 1975 | 72.3 mm (2.8 in) |
| 1976 | 46.3 mm (1.8 in) |
| 1977 | 62.8 mm (2.5 in) |
| 1978 | 83.3 mm (3.3 in) |
| 1979 | 32.3 mm (1.3 in) |
| 1980 | 43.4 mm (1.7 in) |
| 1981 | 76.5 mm (3.0 in) |
| 1982 | 65.0 mm (2.6 in) |
| 1983 | 44.7 mm (1.8 in) |
| 1984 | 27.5 mm (1.1 in) |
| 1985 | 40.1 mm (1.6 in) |
| 1986 | 77.5 mm (3.1 in) |
| 1987 | 57.9 mm (2.3 in) |
| 1988 | 52.6 mm (2.1 in) |
| 1989 | 48.2 mm (1.9 in) |
| 1990 | 36.8 mm (1.4 in) |
| 1991 | 75.4 mm (3.0 in) |
| 1992 | 40.9 mm (1.6 in) |
| 1993 | 135.4 mm (5.3 in) |
| 1994 | 105.5 mm (4.2 in) |
| 1995 | 67.3 mm (2.6 in) |
| 1996 | 61.2 mm (2.4 in) |
| 1997 | 146.5 mm (5.8 in) |
| 1998 | 58.3 mm (2.3 in) |
| 1999 | 41.9 mm (1.6 in) |
| 2000 | 71.4 mm (2.8 in) |
| 2001 | 60.3 mm (2.4 in) |
| 2002 | 42.2 mm (1.7 in) |
| 2003 | 51.0 mm (2.0 in) |
| 2004 | 45.3 mm (1.8 in) |
| 2005 | 46.0 mm (1.8 in) |
| 2006 | 57.9 mm (2.3 in) |
| 2007 | 42.9 mm (1.7 in) |
| 2008 | 36.2 mm (1.4 in) |
| 2009 | 43.0 mm (1.7 in) |
| 2010 | 63.5 mm (2.5 in) |
| 2011 | 63.8 mm (2.5 in) |
| 2012 | 68.8 mm (2.7 in) |
| 2013 | 92.1 mm (3.6 in) |
| 2014 | 36.9 mm (1.5 in) |
| 2015 | 61.2 mm (2.4 in) |
| 2016 | 61.9 mm (2.4 in) |
| 2017 | 43.7 mm (1.7 in) |
| 2018 | 55.3 mm (2.2 in) |
| 2019 | 89.2 mm (3.5 in) |
| 2020 | 34.8 mm (1.4 in) |
| 2021 | 82.6 mm (3.3 in) |
| 2022 | 123.7 mm (4.9 in) |
| 2023 | 52.0 mm (2.0 in) |
| 2024 | 31.1 mm (1.2 in) |
| 2025 | 74.9 mm (2.9 in) |
| 2026 | 29.3 mm (1.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1956 | 29 days |
| 1957 | 39 days |
| 1958 | 39 days |
| 1959 | 33 days |
| 1960 | 77 days |
| 1961 | 31 days |
| 1962 | 43 days |
| 1963 | 78 days |
| 1964 | 33 days |
| 1965 | 51 days |
| 1966 | 61 days |
| 1967 | 26 days |
| 1968 | 26 days |
| 1969 | 67 days |
| 1970 | 54 days |
| 1971 | 52 days |
| 1972 | 32 days |
| 1973 | 64 days |
| 1974 | 41 days |
| 1975 | 51 days |
| 1976 | 33 days |
| 1977 | 46 days |
| 1978 | 37 days |
| 1979 | 29 days |
| 1980 | 52 days |
| 1981 | 50 days |
| 1982 | 34 days |
| 1983 | 39 days |
| 1984 | 36 days |
| 1985 | 34 days |
| 1986 | 42 days |
| 1987 | 46 days |
| 1988 | 26 days |
| 1989 | 31 days |
| 1990 | 42 days |
| 1991 | 29 days |
| 1992 | 34 days |
| 1993 | 38 days |
| 1994 | 38 days |
| 1995 | 46 days |
| 1996 | 29 days |
| 1997 | 40 days |
| 1998 | 26 days |
| 1999 | 52 days |
| 2000 | 29 days |
| 2001 | 78 days |
| 2002 | 31 days |
| 2003 | 22 days |
| 2004 | 58 days |
| 2005 | 54 days |
| 2006 | 35 days |
| 2007 | 44 days |
| 2008 | 36 days |
| 2009 | 59 days |
| 2010 | 46 days |
| 2011 | 31 days |
| 2012 | 43 days |
| 2013 | 27 days |
| 2014 | 41 days |
| 2015 | 25 days |
| 2016 | 41 days |
| 2017 | 28 days |
| 2018 | 19 days |
| 2019 | 49 days |
| 2020 | 51 days |
| 2021 | 27 days |
| 2022 | 32 days |
| 2023 | 41 days |
| 2024 | 30 days |
| 2025 | 50 days |
| 2026 | 47 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
61 years with a frostAcross 61 years with a frost, the median last spring frost at Williston Exp Farm falls on 14 May and the median first autumn frost on 23 September, which leaves a median of 134 days between them.
In 1990 to 2024 the median growing season was 135 days. That is 3 days more than in 1957 to 1988.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1957 to 1988) | Recent period (1990 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 May | 14 May | 14 May | no change | -0.7 days per decade |
| First autumn frost | 23 September | 22 September | 24 September | 2 days later | +1.4 days per decade |
| Growing days | 134 days | 132 days | 135 days | 3 days more | +2.1 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
66 years, 1957 to 2024A day with at least 37.6 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 84.7 mm (3.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 37.6 mm (1.5 in) | |
| 5 years | 50.0 mm (2.0 in) | |
| 10 years | 58.4 mm (2.3 in) | |
| 25 years | 68.9 mm (2.7 in) | |
| 50 years | 76.9 mm (3.0 in) | |
| 100 years | 84.7 mm (3.3 in) | Longer than the 66 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, 66 years of values from 1957 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: 96.5 mm (3.8 in) in 1993; 74.9 mm (2.9 in) in 1997; 71.4 mm (2.8 in) in 1994.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Williston Exp Farm, at 1965 and 1998. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1965 ran 0.6 C (1.0 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1998 ran 0.2 C (0.4 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1965 | +0.6 | +1.0 | likely | 5 |
| 1998 | +0.2 | +0.4 | 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
2007 to 2024 against 1961 to 1990Over 2007 to 2024, Williston Exp Farm had a mean temperature of 7.0 C (44.6 F) and 346.6 mm (13.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Highmore 23 N (United States, 490 km away), Maurine 12SW (United States, 375 km away) and Zeona 10 SSW (United States, 346 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Highmore 23 N | United States | 490 km (304 mi) | 7.0 C (44.5 F) | 442.9 mm (17.4 in) | 0.87 |
| Maurine 12SW | United States | 375 km (233 mi) | 7.3 C (45.2 F) | 416.4 mm (16.4 in) | 0.95 |
| Zeona 10 SSW | United States | 346 km (215 mi) | 7.0 C (44.5 F) | 384.0 mm (15.1 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
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 (2026-10-12).