Simpson 6 N - Wildhorse Weather Records (USC00247620)
Record envelope, standing records and threshold days for Simpson 6 N - Wildhorse (USC00247620), Montana, United States, with 96 years of record.
Key Facts for Simpson 6 N - Wildhorse
- Simpson 6 N - Wildhorse (USC00247620) is a weather station in Montana, United States at 49.00 latitude and -110.22 longitude, 858 m (2,815 ft) above sea level.
- The station reports from 1931 to 2026, 96 years of record.
- 1,464 records set at Simpson 6 N - Wildhorse still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Simpson 6 N - Wildhorse set a daily record snowfall of 7.6 cm (3.0 in) on 11 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Montana, United States, 49.00 latitude, -110.22 longitude.
- Elevation: 858 m (2,815 ft).
- Period of record: 1931 to 2026, 96 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
15 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 18.9 C (66.0 F) | -45.0 C (-49.0 F) | 11.7 C (53.1 F) | -27.2 C (-17.0 F) |
| Feb | 22.8 C (73.0 F) | -46.7 C (-52.1 F) | 17.2 C (63.0 F) | -24.4 C (-11.9 F) |
| Mar | 26.1 C (79.0 F) | -37.8 C (-36.0 F) | 22.8 C (73.0 F) | -22.8 C (-9.0 F) |
| Apr | 33.3 C (91.9 F) | -27.8 C (-18.0 F) | 26.7 C (80.1 F) | -7.8 C (18.0 F) |
| May | 37.2 C (99.0 F) | -10.0 C (14.0 F) | 34.4 C (93.9 F) | -8.9 C (16.0 F) |
| Jun | 41.7 C (107.1 F) | -2.8 C (27.0 F) | 27.2 C (81.0 F) | 3.3 C (37.9 F) |
| Jul | 40.6 C (105.1 F) | 0.0 C (32.0 F) | 38.3 C (100.9 F) | 7.8 C (46.0 F) |
| Aug | 42.8 C (109.0 F) | -2.2 C (28.0 F) | 38.9 C (102.0 F) | 2.8 C (37.0 F) |
| Sep | 38.3 C (100.9 F) | -10.0 C (14.0 F) | 24.4 C (75.9 F) | 2.2 C (36.0 F) |
| Oct | 31.7 C (89.1 F) | -28.9 C (-20.0 F) | 24.4 C (75.9 F) | -0.6 C (30.9 F) |
| Nov | 23.3 C (73.9 F) | -35.6 C (-32.1 F) | n/a | n/a |
| Dec | 19.4 C (66.9 F) | -43.9 C (-47.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1931 | 37 |
| 1932 | 14 |
| 1933 | 41 |
| 1934 | 15 |
| 1935 | 25 |
| 1936 | 63 |
| 1937 | 10 |
| 1938 | 8 |
| 1939 | 26 |
| 1940 | 14 |
| 1941 | 10 |
| 1942 | 11 |
| 1943 | 30 |
| 1944 | 15 |
| 1945 | 12 |
| 1946 | 4 |
| 1947 | 14 |
| 1948 | 5 |
| 1949 | 24 |
| 1950 | 25 |
| 1951 | 29 |
| 1952 | 12 |
| 1953 | 7 |
| 1954 | 19 |
| 1955 | 17 |
| 1956 | 11 |
| 1957 | 11 |
| 1958 | 10 |
| 1959 | 7 |
| 1960 | 11 |
| 1961 | 17 |
| 1962 | 18 |
| 1963 | 20 |
| 1964 | 12 |
| 1965 | 23 |
| 1966 | 12 |
| 1967 | 17 |
| 1968 | 20 |
| 1969 | 19 |
| 1970 | 8 |
| 1971 | 14 |
| 1972 | 20 |
| 1973 | 14 |
| 1974 | 10 |
| 1975 | 15 |
| 1976 | 7 |
| 1977 | 16 |
| 1978 | 8 |
| 1979 | 4 |
| 1980 | 23 |
| 1981 | 18 |
| 1982 | 13 |
| 1983 | 18 |
| 1984 | 15 |
| 1985 | 33 |
| 1986 | 10 |
| 1987 | 12 |
| 1988 | 17 |
| 1989 | 9 |
| 1990 | 12 |
| 1991 | 18 |
| 1992 | 31 |
| 1993 | 11 |
| 1994 | 9 |
| 1995 | 11 |
| 1996 | 8 |
| 1997 | 13 |
| 1998 | 11 |
| 1999 | 9 |
| 2000 | 15 |
| 2001 | 10 |
| 2002 | 27 |
| 2003 | 13 |
| 2004 | 9 |
| 2005 | 12 |
| 2006 | 9 |
| 2007 | 12 |
| 2008 | 9 |
| 2009 | 20 |
| 2010 | 10 |
| 2011 | 12 |
| 2012 | 11 |
| 2013 | 9 |
| 2014 | 14 |
| 2015 | 9 |
| 2016 | 13 |
| 2017 | 8 |
| 2018 | 7 |
| 2019 | 21 |
| 2020 | 16 |
| 2021 | 8 |
| 2022 | 16 |
| 2023 | 4 |
| 2024 | 8 |
| 2025 | 9 |
| 2026 | 41 |
All-Time Record Progression
7 new records| Date | Kind | Detail |
|---|---|---|
| 1961-08-05 | Record high maximum temperature | Record high maximum temperature 42.8 C (109.0 F) |
| 1984-08-03 | Record daily precipitation | Record daily precipitation 78.7 mm (3.1 in) |
| 1986-09-25 | Record daily precipitation | Record daily precipitation 81.3 mm (3.2 in) |
| 2011-01-19 | Record snow depth | Record snow depth 71.1 cm (28.0 in) |
| 2011-03-04 | Record snow depth | Record snow depth 73.7 cm (29.0 in) |
| 2011-03-05 | Record snow depth | Record snow depth 78.7 cm (31.0 in) |
| 2019-02-25 | Record snow depth | Record snow depth 91.4 cm (36.0 in) |
Wettest Day of Each Month
Sep: 81.3 mm (3.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 13.0 mm (0.5 in) | 3 January 1996 |
| Feb | 20.3 mm (0.8 in) | 26 February 1958 |
| Mar | 19.3 mm (0.8 in) | 24 March 2024 |
| Apr | 30.5 mm (1.2 in) | 20 April 2007 |
| May | 48.3 mm (1.9 in) | 21 May 2020 |
| Jun | 76.2 mm (3.0 in) | 7 June 2011 |
| Jul | 41.9 mm (1.6 in) | 10 July 1983 |
| Aug | 78.7 mm (3.1 in) | 3 August 1984 |
| Sep | 81.3 mm (3.2 in) | 25 September 1986 |
| Oct | 27.9 mm (1.1 in) | 3 October 2017 |
| Nov | 26.4 mm (1.0 in) | 10 November 2019 |
| Dec | 27.9 mm (1.1 in) | 10 December 2025 |
Period of Record Coverage
1931 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1931 | 209 | 57% | No |
| 1932 | 357 | 98% | Yes |
| 1933 | 315 | 86% | No |
| 1934 | 206 | 56% | No |
| 1935 | 363 | 99% | Yes |
| 1936 | 360 | 98% | Yes |
| 1937 | 346 | 95% | Yes |
| 1938 | 358 | 98% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 354 | 97% | Yes |
| 1941 | 352 | 96% | Yes |
| 1942 | 363 | 99% | Yes |
| 1943 | 362 | 99% | Yes |
| 1944 | 361 | 99% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 362 | 99% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 360 | 98% | Yes |
| 1949 | 361 | 99% | Yes |
| 1950 | 362 | 99% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 359 | 98% | Yes |
| 1954 | 333 | 91% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 364 | 99% | Yes |
| 1957 | 358 | 98% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 362 | 99% | Yes |
| 1960 | 361 | 99% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 355 | 97% | Yes |
| 1964 | 359 | 98% | Yes |
| 1965 | 358 | 98% | Yes |
| 1966 | 357 | 98% | Yes |
| 1967 | 346 | 95% | Yes |
| 1968 | 359 | 98% | Yes |
| 1969 | 358 | 98% | Yes |
| 1970 | 356 | 98% | Yes |
| 1971 | 360 | 99% | Yes |
| 1972 | 355 | 97% | Yes |
| 1973 | 354 | 97% | Yes |
| 1974 | 356 | 98% | Yes |
| 1975 | 350 | 96% | Yes |
| 1976 | 325 | 89% | No |
| 1977 | 357 | 98% | Yes |
| 1978 | 342 | 94% | Yes |
| 1979 | 353 | 97% | Yes |
| 1980 | 348 | 95% | Yes |
| 1981 | 339 | 93% | Yes |
| 1982 | 342 | 94% | Yes |
| 1983 | 349 | 96% | Yes |
| 1984 | 352 | 96% | Yes |
| 1985 | 329 | 90% | Yes |
| 1986 | 292 | 80% | No |
| 1987 | 304 | 83% | No |
| 1988 | 252 | 69% | No |
| 1989 | 287 | 79% | No |
| 1990 | 297 | 81% | No |
| 1991 | 322 | 88% | No |
| 1992 | 359 | 98% | Yes |
| 1993 | 352 | 96% | Yes |
| 1994 | 356 | 98% | Yes |
| 1995 | 361 | 99% | Yes |
| 1996 | 359 | 98% | Yes |
| 1997 | 359 | 98% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 360 | 99% | Yes |
| 2000 | 363 | 99% | Yes |
| 2001 | 330 | 90% | Yes |
| 2002 | 325 | 89% | No |
| 2003 | 316 | 87% | No |
| 2004 | 297 | 81% | No |
| 2005 | 182 | 50% | No |
| 2006 | 323 | 88% | No |
| 2007 | 313 | 86% | No |
| 2008 | 344 | 94% | Yes |
| 2009 | 360 | 99% | Yes |
| 2010 | 360 | 99% | Yes |
| 2011 | 350 | 96% | Yes |
| 2012 | 363 | 99% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 362 | 99% | Yes |
| 2017 | 313 | 86% | No |
| 2018 | 111 | 30% | No |
| 2019 | 347 | 95% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 358 | 98% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 256 | 70% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | Simpson 6 N - Wildhorse, US | daily snowfall (Provisional) | 7.6 cm (3.0 in) | 7.6 cm (3.0 in) | 95 years | 53 of 100 (Notable) |
| 8 September 2026 | Simpson 6 N - Wildhorse, US | daily rain (Provisional) | 12.7 mm (0.5 in) | 1.8 mm (0.07 in) | 80 years | 20 of 100 (Routine) |
| 22 August 2026 | Simpson 6 N - Wildhorse, US | daily high min (Provisional) | 17.2 C (63.0 F) | 0.5 C (0.9 F) | 52 years | 25 of 100 (Routine) |
| 4 August 2026 | Simpson 6 N - Wildhorse, US | daily low min | 2.8 C (37.0 F) | 1.6 C (2.9 F) | 53 years | 29 of 100 (Routine) |
| 2 August 2026 | Simpson 6 N - Wildhorse, US | daily high max | 38.9 C (102.0 F) | 1.7 C (3.1 F) | 55 years | 28 of 100 (Routine) |
| 1 August 2026 | Simpson 6 N - Wildhorse, US | daily high max (Tie) | 38.3 C (100.9 F) | tie | 52 years | 6 of 100 (Routine) |
| 1 June 2026 | Simpson 6 N - Wildhorse, US | daily low max | 9.4 C (48.9 F) | 1.2 C (2.2 F) | 75 years | 33 of 100 (Routine) |
| 30 May 2026 | Simpson 6 N - Wildhorse, US | monthly high min | 21.7 C (71.1 F) | 1.7 C (3.1 F) | 92 years | 49 of 100 (Notable) |
| 30 May 2026 | Simpson 6 N - Wildhorse, US | daily rain | 39.9 mm (1.6 in) | 10.4 mm (0.4 in) | 40 years | 35 of 100 (Notable) |
| 27 May 2026 | Simpson 6 N - Wildhorse, US | daily high min | 17.2 C (63.0 F) | 1.6 C (2.9 F) | 92 years | 39 of 100 (Notable) |
| 26 May 2026 | Simpson 6 N - Wildhorse, US | daily high max (Tie) | 34.4 C (93.9 F) | tie | 89 years | 8 of 100 (Routine) |
| 14 May 2026 | Simpson 6 N - Wildhorse, US | daily high max (Tie) | 30.6 C (87.1 F) | tie | 41 years | 5 of 100 (Routine) |
| 12 May 2026 | Simpson 6 N - Wildhorse, US | daily high min | 18.9 C (66.0 F) | 4.5 C (8.1 F) | 84 years | 44 of 100 (Notable) |
| 11 May 2026 | Simpson 6 N - Wildhorse, US | daily high min | 17.2 C (63.0 F) | 5.5 C (9.9 F) | 37 years | 32 of 100 (Routine) |
| 10 May 2026 | Simpson 6 N - Wildhorse, US | daily high min | 17.2 C (63.0 F) | 1.6 C (2.9 F) | 32 years | 21 of 100 (Routine) |
| 9 May 2026 | Simpson 6 N - Wildhorse, US | daily high min | 16.7 C (62.1 F) | 6.7 C (12.1 F) | 93 years | 52 of 100 (Notable) |
| 6 May 2026 | Simpson 6 N - Wildhorse, US | daily low min | -8.9 C (16.0 F) | 2.8 C (5.0 F) | 48 years | 29 of 100 (Routine) |
| 26 April 2026 | Simpson 6 N - Wildhorse, US | daily low max | 1.1 C (34.0 F) | 1.1 C (2.0 F) | 93 years | 38 of 100 (Notable) |
| 25 April 2026 | Simpson 6 N - Wildhorse, US | daily low max | 1.1 C (34.0 F) | 2.2 C (4.0 F) | 65 years | 31 of 100 (Routine) |
| 24 April 2026 | Simpson 6 N - Wildhorse, US | daily low max | -0.6 C (30.9 F) | 0.6 C (1.1 F) | 65 years | 28 of 100 (Routine) |
Climate Trend
75 complete years, 1932 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1932 | 5.0 C | -0.05 C |
| 1935 | 3.6 C | -1.40 C |
| 1936 | 3.9 C | -1.10 C |
| 1938 | 5.5 C | +0.49 C |
| 1939 | 6.2 C | +1.18 C |
| 1940 | 4.9 C | -0.17 C |
| 1942 | 4.5 C | -0.49 C |
| 1943 | 4.2 C | -0.79 C |
| 1944 | 5.4 C | +0.35 C |
| 1945 | 4.1 C | -0.95 C |
| 1946 | 5.1 C | +0.08 C |
| 1947 | 5.0 C | -0.03 C |
| 1948 | 4.8 C | -0.26 C |
| 1949 | 3.8 C | -1.19 C |
| 1950 | 2.3 C | -2.76 C |
| 1951 | 1.8 C | -3.23 C |
| 1952 | 4.1 C | -0.89 C |
| 1953 | 6.4 C | +1.38 C |
| 1955 | 2.9 C | -2.17 C |
| 1956 | 4.5 C | -0.49 C |
| 1957 | 4.9 C | -0.14 C |
| 1958 | 5.8 C | +0.73 C |
| 1959 | 4.5 C | -0.53 C |
| 1960 | 4.7 C | -0.38 C |
| 1961 | 6.2 C | +1.20 C |
| 1962 | 6.0 C | +1.01 C |
| 1963 | 6.4 C | +1.32 C |
| 1964 | 4.7 C | -0.34 C |
| 1965 | 3.0 C | -2.04 C |
| 1966 | 3.5 C | -1.54 C |
| 1967 | 4.3 C | -0.75 C |
| 1968 | 4.6 C | -0.48 C |
| 1969 | 3.4 C | -1.61 C |
| 1970 | 4.0 C | -1.07 C |
| 1971 | 4.1 C | -0.96 C |
| 1972 | 3.9 C | -1.17 C |
| 1973 | 5.5 C | +0.46 C |
| 1974 | 5.9 C | +0.91 C |
| 1975 | 3.4 C | -1.65 C |
| 1977 | 5.4 C | +0.37 C |
| 1979 | 4.1 C | -0.89 C |
| 1980 | 5.4 C | +0.40 C |
| 1982 | 3.3 C | -1.72 C |
| 1983 | 5.4 C | +0.38 C |
| 1984 | 5.7 C | +0.68 C |
| 1985 | 3.8 C | -1.24 C |
| 1987 | 8.1 C | +3.02 C |
| 1992 | 6.9 C | +1.86 C |
| 1993 | 4.5 C | -0.50 C |
| 1994 | 6.0 C | +1.01 C |
| 1995 | 5.0 C | -0.02 C |
| 1996 | 3.4 C | -1.60 C |
| 1997 | 6.2 C | +1.19 C |
| 1998 | 7.2 C | +2.13 C |
| 1999 | 7.2 C | +2.16 C |
| 2000 | 5.7 C | +0.66 C |
| 2002 | 4.2 C | -0.80 C |
| 2003 | 5.7 C | +0.69 C |
| 2006 | 7.3 C | +2.24 C |
| 2007 | 6.5 C | +1.50 C |
| 2008 | 5.3 C | +0.31 C |
| 2009 | 4.5 C | -0.51 C |
| 2010 | 4.0 C | -1.03 C |
| 2011 | 5.0 C | -0.04 C |
| 2012 | 6.3 C | +1.25 C |
| 2013 | 5.3 C | +0.25 C |
| 2014 | 5.3 C | +0.22 C |
| 2015 | 6.7 C | +1.71 C |
| 2016 | 6.8 C | +1.81 C |
| 2020 | 5.5 C | +0.43 C |
| 2021 | 6.0 C | +0.96 C |
| 2022 | 5.2 C | +0.16 C |
| 2023 | 6.1 C | +1.07 C |
| 2024 | 5.6 C | +0.52 C |
| 2025 | 5.7 C | +0.66 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1932 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 75 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.2 to 0.5) per decade | 1932 to 2025 | 75 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.6) per decade | 1932 to 2025 | 75 | Rise |
| Mean daily minimum | 0.13 C (0.04 to 0.23) per decade | 0.2 F (0.1 to 0.4) per decade | 1932 to 2025 | 75 | 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
1931 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.8 C (109.0 F) | 1961 | 37.8 C (100.0 F) | 96 |
| Coldest night (TNn) | -46.7 C (-52.1 F) | 1936 | -36.7 C (-34.1 F) | 96 |
| Wettest day (Rx1day) | 81.3 mm (3.2 in) | 1986 | 29.5 mm (1.2 in) | 96 |
| Wettest five days (Rx5day) | 98.5 mm (3.9 in) | 2011 | 44.9 mm (1.8 in) | 96 |
| Longest dry spell (CDD) | 112 days | 1974 | 44 days | 96 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1931 | 40.0 C (104.0 F) |
| 1932 | 35.6 C (96.1 F) |
| 1933 | 40.6 C (105.1 F) |
| 1934 | 34.4 C (93.9 F) |
| 1935 | 38.3 C (100.9 F) |
| 1936 | 41.7 C (107.1 F) |
| 1937 | 40.0 C (104.0 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 38.9 C (102.0 F) |
| 1940 | 37.2 C (99.0 F) |
| 1941 | 40.6 C (105.1 F) |
| 1942 | 35.6 C (96.1 F) |
| 1943 | 37.2 C (99.0 F) |
| 1944 | 37.8 C (100.0 F) |
| 1945 | 38.3 C (100.9 F) |
| 1946 | 38.3 C (100.9 F) |
| 1947 | 38.3 C (100.9 F) |
| 1948 | 36.7 C (98.1 F) |
| 1949 | 40.6 C (105.1 F) |
| 1950 | 35.6 C (96.1 F) |
| 1951 | 38.9 C (102.0 F) |
| 1952 | 36.1 C (97.0 F) |
| 1953 | 40.0 C (104.0 F) |
| 1954 | 37.2 C (99.0 F) |
| 1955 | 34.4 C (93.9 F) |
| 1956 | 35.6 C (96.1 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 36.7 C (98.1 F) |
| 1959 | 37.2 C (99.0 F) |
| 1960 | 40.6 C (105.1 F) |
| 1961 | 42.8 C (109.0 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 38.3 C (100.9 F) |
| 1964 | 38.9 C (102.0 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 34.4 C (93.9 F) |
| 1967 | 37.2 C (99.0 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 41.1 C (106.0 F) |
| 1970 | 38.9 C (102.0 F) |
| 1971 | 40.0 C (104.0 F) |
| 1972 | 37.8 C (100.0 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 38.9 C (102.0 F) |
| 1975 | 40.0 C (104.0 F) |
| 1976 | 38.3 C (100.9 F) |
| 1977 | 37.2 C (99.0 F) |
| 1978 | 38.3 C (100.9 F) |
| 1979 | 38.3 C (100.9 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 39.4 C (102.9 F) |
| 1982 | 36.7 C (98.1 F) |
| 1983 | 42.2 C (108.0 F) |
| 1984 | 40.0 C (104.0 F) |
| 1985 | 40.0 C (104.0 F) |
| 1986 | 35.6 C (96.1 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 37.2 C (99.0 F) |
| 1990 | 39.4 C (102.9 F) |
| 1991 | 38.9 C (102.0 F) |
| 1992 | 36.1 C (97.0 F) |
| 1993 | 36.7 C (98.1 F) |
| 1994 | 37.8 C (100.0 F) |
| 1995 | 33.9 C (93.0 F) |
| 1996 | 37.8 C (100.0 F) |
| 1997 | 39.4 C (102.9 F) |
| 1998 | 38.3 C (100.9 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 40.0 C (104.0 F) |
| 2001 | 39.4 C (102.9 F) |
| 2002 | 37.2 C (99.0 F) |
| 2003 | 38.3 C (100.9 F) |
| 2004 | 36.7 C (98.1 F) |
| 2005 | 37.2 C (99.0 F) |
| 2006 | 37.8 C (100.0 F) |
| 2007 | 40.6 C (105.1 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 36.1 C (97.0 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 38.3 C (100.9 F) |
| 2012 | 37.2 C (99.0 F) |
| 2013 | 35.6 C (96.1 F) |
| 2014 | 36.7 C (98.1 F) |
| 2015 | 38.3 C (100.9 F) |
| 2016 | 36.1 C (97.0 F) |
| 2017 | 37.2 C (99.0 F) |
| 2018 | 34.4 C (93.9 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 36.7 C (98.1 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 37.8 C (100.0 F) |
| 2023 | 38.3 C (100.9 F) |
| 2024 | 40.0 C (104.0 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1931 | -22.2 C (-8.0 F) |
| 1932 | -34.4 C (-29.9 F) |
| 1933 | -34.4 C (-29.9 F) |
| 1934 | -30.0 C (-22.0 F) |
| 1935 | -42.2 C (-44.0 F) |
| 1936 | -46.7 C (-52.1 F) |
| 1937 | -39.4 C (-38.9 F) |
| 1938 | -39.4 C (-38.9 F) |
| 1939 | -42.2 C (-44.0 F) |
| 1940 | -35.6 C (-32.1 F) |
| 1941 | -30.6 C (-23.1 F) |
| 1942 | -36.1 C (-33.0 F) |
| 1943 | -44.4 C (-47.9 F) |
| 1944 | -28.9 C (-20.0 F) |
| 1945 | -34.4 C (-29.9 F) |
| 1946 | -32.2 C (-26.0 F) |
| 1947 | -36.7 C (-34.1 F) |
| 1948 | -35.0 C (-31.0 F) |
| 1949 | -40.0 C (-40.0 F) |
| 1950 | -43.3 C (-45.9 F) |
| 1951 | -37.8 C (-36.0 F) |
| 1952 | -36.7 C (-34.1 F) |
| 1953 | -28.3 C (-18.9 F) |
| 1954 | -45.0 C (-49.0 F) |
| 1955 | -38.3 C (-36.9 F) |
| 1956 | -37.8 C (-36.0 F) |
| 1957 | -42.8 C (-45.0 F) |
| 1958 | -33.3 C (-27.9 F) |
| 1959 | -35.0 C (-31.0 F) |
| 1960 | -37.8 C (-36.0 F) |
| 1961 | -35.0 C (-31.0 F) |
| 1962 | -36.1 C (-33.0 F) |
| 1963 | -37.2 C (-35.0 F) |
| 1964 | -36.7 C (-34.1 F) |
| 1965 | -32.8 C (-27.0 F) |
| 1966 | -35.0 C (-31.0 F) |
| 1967 | -31.1 C (-24.0 F) |
| 1968 | -40.0 C (-40.0 F) |
| 1969 | -43.3 C (-45.9 F) |
| 1970 | -37.2 C (-35.0 F) |
| 1971 | -34.4 C (-29.9 F) |
| 1972 | -42.2 C (-44.0 F) |
| 1973 | -32.2 C (-26.0 F) |
| 1974 | -38.3 C (-36.9 F) |
| 1975 | -36.1 C (-33.0 F) |
| 1976 | -33.3 C (-27.9 F) |
| 1977 | -38.9 C (-38.0 F) |
| 1978 | -35.6 C (-32.1 F) |
| 1979 | -40.6 C (-41.1 F) |
| 1980 | -36.1 C (-33.0 F) |
| 1981 | -35.6 C (-32.1 F) |
| 1982 | -40.6 C (-41.1 F) |
| 1983 | -43.9 C (-47.0 F) |
| 1984 | -37.8 C (-36.0 F) |
| 1985 | -36.1 C (-33.0 F) |
| 1986 | -30.6 C (-23.1 F) |
| 1987 | -26.7 C (-16.1 F) |
| 1988 | -31.1 C (-24.0 F) |
| 1989 | -40.6 C (-41.1 F) |
| 1990 | -35.0 C (-31.0 F) |
| 1991 | -36.7 C (-34.1 F) |
| 1992 | -37.8 C (-36.0 F) |
| 1993 | -36.1 C (-33.0 F) |
| 1994 | -43.3 C (-45.9 F) |
| 1995 | -31.1 C (-24.0 F) |
| 1996 | -42.8 C (-45.0 F) |
| 1997 | -39.4 C (-38.9 F) |
| 1998 | -37.2 C (-35.0 F) |
| 1999 | -27.2 C (-17.0 F) |
| 2000 | -35.0 C (-31.0 F) |
| 2001 | -32.2 C (-26.0 F) |
| 2002 | -33.9 C (-29.0 F) |
| 2003 | -38.9 C (-38.0 F) |
| 2004 | -40.0 C (-40.0 F) |
| 2005 | -39.4 C (-38.9 F) |
| 2006 | -33.3 C (-27.9 F) |
| 2007 | -35.6 C (-32.1 F) |
| 2008 | -39.4 C (-38.9 F) |
| 2009 | -38.3 C (-36.9 F) |
| 2010 | -37.8 C (-36.0 F) |
| 2011 | -43.9 C (-47.0 F) |
| 2012 | -32.2 C (-26.0 F) |
| 2013 | -40.6 C (-41.1 F) |
| 2014 | -33.9 C (-29.0 F) |
| 2015 | -35.0 C (-31.0 F) |
| 2016 | -40.0 C (-40.0 F) |
| 2017 | -37.8 C (-36.0 F) |
| 2018 | -40.0 C (-40.0 F) |
| 2019 | -36.1 C (-33.0 F) |
| 2020 | -37.8 C (-36.0 F) |
| 2021 | -35.6 C (-32.1 F) |
| 2022 | -38.9 C (-38.0 F) |
| 2023 | -29.4 C (-20.9 F) |
| 2024 | -42.2 C (-44.0 F) |
| 2025 | -39.4 C (-38.9 F) |
| 2026 | -27.2 C (-17.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1931 | 34.3 mm (1.4 in) |
| 1932 | 32.0 mm (1.3 in) |
| 1933 | 46.2 mm (1.8 in) |
| 1934 | 24.1 mm (0.9 in) |
| 1935 | 27.9 mm (1.1 in) |
| 1936 | 22.1 mm (0.9 in) |
| 1937 | 66.8 mm (2.6 in) |
| 1938 | 31.0 mm (1.2 in) |
| 1939 | 26.4 mm (1.0 in) |
| 1940 | 39.9 mm (1.6 in) |
| 1941 | 41.7 mm (1.6 in) |
| 1942 | 24.6 mm (1.0 in) |
| 1943 | 16.0 mm (0.6 in) |
| 1944 | 14.7 mm (0.6 in) |
| 1945 | 26.4 mm (1.0 in) |
| 1946 | 24.6 mm (1.0 in) |
| 1947 | 22.1 mm (0.9 in) |
| 1948 | 23.6 mm (0.9 in) |
| 1949 | 29.0 mm (1.1 in) |
| 1950 | 44.2 mm (1.7 in) |
| 1951 | 42.2 mm (1.7 in) |
| 1952 | 20.8 mm (0.8 in) |
| 1953 | 29.0 mm (1.1 in) |
| 1954 | 33.3 mm (1.3 in) |
| 1955 | 24.9 mm (1.0 in) |
| 1956 | 31.8 mm (1.3 in) |
| 1957 | 14.0 mm (0.6 in) |
| 1958 | 29.7 mm (1.2 in) |
| 1959 | 41.1 mm (1.6 in) |
| 1960 | 20.1 mm (0.8 in) |
| 1961 | 15.2 mm (0.6 in) |
| 1962 | 38.9 mm (1.5 in) |
| 1963 | 32.8 mm (1.3 in) |
| 1964 | 21.6 mm (0.9 in) |
| 1965 | 45.0 mm (1.8 in) |
| 1966 | 36.6 mm (1.4 in) |
| 1967 | 28.4 mm (1.1 in) |
| 1968 | 54.4 mm (2.1 in) |
| 1969 | 15.2 mm (0.6 in) |
| 1970 | 43.2 mm (1.7 in) |
| 1971 | 42.2 mm (1.7 in) |
| 1972 | 26.9 mm (1.1 in) |
| 1973 | 18.0 mm (0.7 in) |
| 1974 | 46.5 mm (1.8 in) |
| 1975 | 51.6 mm (2.0 in) |
| 1976 | 25.1 mm (1.0 in) |
| 1977 | 32.5 mm (1.3 in) |
| 1978 | 43.2 mm (1.7 in) |
| 1979 | 16.3 mm (0.6 in) |
| 1980 | 26.4 mm (1.0 in) |
| 1981 | 28.4 mm (1.1 in) |
| 1982 | 24.1 mm (0.9 in) |
| 1983 | 41.9 mm (1.6 in) |
| 1984 | 78.7 mm (3.1 in) |
| 1985 | 31.8 mm (1.3 in) |
| 1986 | 81.3 mm (3.2 in) |
| 1987 | 29.2 mm (1.1 in) |
| 1988 | 19.1 mm (0.8 in) |
| 1989 | 37.6 mm (1.5 in) |
| 1990 | 19.1 mm (0.8 in) |
| 1991 | 40.6 mm (1.6 in) |
| 1992 | 23.4 mm (0.9 in) |
| 1993 | 27.2 mm (1.1 in) |
| 1994 | 38.4 mm (1.5 in) |
| 1995 | 45.2 mm (1.8 in) |
| 1996 | 38.4 mm (1.5 in) |
| 1997 | 22.1 mm (0.9 in) |
| 1998 | 39.9 mm (1.6 in) |
| 1999 | 20.1 mm (0.8 in) |
| 2000 | 17.0 mm (0.7 in) |
| 2001 | 24.1 mm (0.9 in) |
| 2002 | 40.9 mm (1.6 in) |
| 2003 | 21.6 mm (0.9 in) |
| 2004 | 31.8 mm (1.3 in) |
| 2005 | 7.9 mm (0.31 in) |
| 2006 | 20.3 mm (0.8 in) |
| 2007 | 30.5 mm (1.2 in) |
| 2008 | 24.4 mm (1.0 in) |
| 2009 | 21.3 mm (0.8 in) |
| 2010 | 35.6 mm (1.4 in) |
| 2011 | 76.2 mm (3.0 in) |
| 2012 | 22.9 mm (0.9 in) |
| 2013 | 43.4 mm (1.7 in) |
| 2014 | 42.7 mm (1.7 in) |
| 2015 | 24.9 mm (1.0 in) |
| 2016 | 66.5 mm (2.6 in) |
| 2017 | 27.9 mm (1.1 in) |
| 2018 | 12.7 mm (0.5 in) |
| 2019 | 26.4 mm (1.0 in) |
| 2020 | 48.3 mm (1.9 in) |
| 2021 | 41.1 mm (1.6 in) |
| 2022 | 24.4 mm (1.0 in) |
| 2023 | 38.1 mm (1.5 in) |
| 2024 | 45.7 mm (1.8 in) |
| 2025 | 29.7 mm (1.2 in) |
| 2026 | 39.9 mm (1.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1931 | 54.6 mm (2.1 in) |
| 1932 | 82.2 mm (3.2 in) |
| 1933 | 68.5 mm (2.7 in) |
| 1934 | 47.7 mm (1.9 in) |
| 1935 | 56.1 mm (2.2 in) |
| 1936 | 22.1 mm (0.9 in) |
| 1937 | 67.3 mm (2.6 in) |
| 1938 | 45.2 mm (1.8 in) |
| 1939 | 29.0 mm (1.1 in) |
| 1940 | 49.5 mm (1.9 in) |
| 1941 | 80.3 mm (3.2 in) |
| 1942 | 28.5 mm (1.1 in) |
| 1943 | 23.6 mm (0.9 in) |
| 1944 | 25.9 mm (1.0 in) |
| 1945 | 27.7 mm (1.1 in) |
| 1946 | 43.1 mm (1.7 in) |
| 1947 | 42.5 mm (1.7 in) |
| 1948 | 46.8 mm (1.8 in) |
| 1949 | 33.8 mm (1.3 in) |
| 1950 | 50.2 mm (2.0 in) |
| 1951 | 82.1 mm (3.2 in) |
| 1952 | 38.3 mm (1.5 in) |
| 1953 | 42.2 mm (1.7 in) |
| 1954 | 46.0 mm (1.8 in) |
| 1955 | 51.6 mm (2.0 in) |
| 1956 | 38.6 mm (1.5 in) |
| 1957 | 33.3 mm (1.3 in) |
| 1958 | 29.7 mm (1.2 in) |
| 1959 | 63.9 mm (2.5 in) |
| 1960 | 31.0 mm (1.2 in) |
| 1961 | 17.0 mm (0.7 in) |
| 1962 | 44.2 mm (1.7 in) |
| 1963 | 37.6 mm (1.5 in) |
| 1964 | 29.8 mm (1.2 in) |
| 1965 | 67.0 mm (2.6 in) |
| 1966 | 47.8 mm (1.9 in) |
| 1967 | 32.6 mm (1.3 in) |
| 1968 | 56.4 mm (2.2 in) |
| 1969 | 42.3 mm (1.7 in) |
| 1970 | 94.3 mm (3.7 in) |
| 1971 | 53.6 mm (2.1 in) |
| 1972 | 28.9 mm (1.1 in) |
| 1973 | 41.6 mm (1.6 in) |
| 1974 | 67.6 mm (2.7 in) |
| 1975 | 61.2 mm (2.4 in) |
| 1976 | 63.3 mm (2.5 in) |
| 1977 | 45.7 mm (1.8 in) |
| 1978 | 54.9 mm (2.2 in) |
| 1979 | 17.9 mm (0.7 in) |
| 1980 | 59.7 mm (2.4 in) |
| 1981 | 51.8 mm (2.0 in) |
| 1982 | 62.0 mm (2.4 in) |
| 1983 | 43.4 mm (1.7 in) |
| 1984 | 78.7 mm (3.1 in) |
| 1985 | 43.5 mm (1.7 in) |
| 1986 | 81.3 mm (3.2 in) |
| 1987 | 40.3 mm (1.6 in) |
| 1988 | 22.8 mm (0.9 in) |
| 1989 | 51.5 mm (2.0 in) |
| 1990 | 20.1 mm (0.8 in) |
| 1991 | 44.5 mm (1.8 in) |
| 1992 | 34.1 mm (1.3 in) |
| 1993 | 56.1 mm (2.2 in) |
| 1994 | 41.4 mm (1.6 in) |
| 1995 | 69.8 mm (2.7 in) |
| 1996 | 42.2 mm (1.7 in) |
| 1997 | 24.1 mm (0.9 in) |
| 1998 | 47.5 mm (1.9 in) |
| 1999 | 29.7 mm (1.2 in) |
| 2000 | 38.3 mm (1.5 in) |
| 2001 | 27.4 mm (1.1 in) |
| 2002 | 82.7 mm (3.3 in) |
| 2003 | 48.3 mm (1.9 in) |
| 2004 | 66.0 mm (2.6 in) |
| 2005 | 9.6 mm (0.38 in) |
| 2006 | 32.7 mm (1.3 in) |
| 2007 | 38.6 mm (1.5 in) |
| 2008 | 43.1 mm (1.7 in) |
| 2009 | 35.3 mm (1.4 in) |
| 2010 | 76.8 mm (3.0 in) |
| 2011 | 98.5 mm (3.9 in) |
| 2012 | 47.8 mm (1.9 in) |
| 2013 | 52.6 mm (2.1 in) |
| 2014 | 67.1 mm (2.6 in) |
| 2015 | 37.9 mm (1.5 in) |
| 2016 | 83.0 mm (3.3 in) |
| 2017 | 33.1 mm (1.3 in) |
| 2018 | 12.9 mm (0.5 in) |
| 2019 | 29.0 mm (1.1 in) |
| 2020 | 57.4 mm (2.3 in) |
| 2021 | 73.3 mm (2.9 in) |
| 2022 | 42.5 mm (1.7 in) |
| 2023 | 38.1 mm (1.5 in) |
| 2024 | 60.9 mm (2.4 in) |
| 2025 | 56.4 mm (2.2 in) |
| 2026 | 66.6 mm (2.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1931 | 55 days |
| 1932 | 41 days |
| 1933 | 32 days |
| 1934 | 31 days |
| 1935 | 44 days |
| 1936 | 44 days |
| 1937 | 49 days |
| 1938 | 36 days |
| 1939 | 53 days |
| 1940 | 31 days |
| 1941 | 35 days |
| 1942 | 39 days |
| 1943 | 39 days |
| 1944 | 34 days |
| 1945 | 30 days |
| 1946 | 52 days |
| 1947 | 33 days |
| 1948 | 45 days |
| 1949 | 44 days |
| 1950 | 34 days |
| 1951 | 32 days |
| 1952 | 63 days |
| 1953 | 81 days |
| 1954 | 66 days |
| 1955 | 49 days |
| 1956 | 57 days |
| 1957 | 69 days |
| 1958 | 35 days |
| 1959 | 41 days |
| 1960 | 45 days |
| 1961 | 25 days |
| 1962 | 38 days |
| 1963 | 62 days |
| 1964 | 62 days |
| 1965 | 57 days |
| 1966 | 39 days |
| 1967 | 45 days |
| 1968 | 45 days |
| 1969 | 59 days |
| 1970 | 61 days |
| 1971 | 50 days |
| 1972 | 35 days |
| 1973 | 95 days |
| 1974 | 112 days |
| 1975 | 31 days |
| 1976 | 56 days |
| 1977 | 60 days |
| 1978 | 28 days |
| 1979 | 37 days |
| 1980 | 27 days |
| 1981 | 26 days |
| 1982 | 55 days |
| 1983 | 37 days |
| 1984 | 57 days |
| 1985 | 35 days |
| 1986 | 44 days |
| 1987 | 50 days |
| 1988 | 46 days |
| 1989 | 41 days |
| 1990 | 37 days |
| 1991 | 34 days |
| 1992 | 49 days |
| 1993 | 32 days |
| 1994 | 57 days |
| 1995 | 49 days |
| 1996 | 36 days |
| 1997 | 37 days |
| 1998 | 28 days |
| 1999 | 35 days |
| 2000 | 31 days |
| 2001 | 38 days |
| 2002 | 47 days |
| 2003 | 42 days |
| 2004 | 61 days |
| 2005 | 64 days |
| 2006 | 40 days |
| 2007 | 59 days |
| 2008 | 62 days |
| 2009 | 47 days |
| 2010 | 32 days |
| 2011 | 39 days |
| 2012 | 28 days |
| 2013 | 55 days |
| 2014 | 63 days |
| 2015 | 42 days |
| 2016 | 54 days |
| 2017 | 29 days |
| 2018 | 28 days |
| 2019 | 34 days |
| 2020 | 51 days |
| 2021 | 48 days |
| 2022 | 62 days |
| 2023 | 34 days |
| 2024 | 62 days |
| 2025 | 33 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
75 years with a frostAcross 75 years with a frost, the median last spring frost at Simpson 6 N - Wildhorse falls on 24 May and the median first autumn frost on 11 September, which leaves a median of 107 days between them.
In 1985 to 2025 the median growing season was 113 days. That is 5 days more than in 1932 to 1966.
Fitted over all years, the growing season changes by +2.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1932 to 1966) | Recent period (1985 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 24 May | 24 May | 22 May | 2 days earlier | -1.2 days per decade |
| First autumn frost | 11 September | 9 September | 14 September | 5 days later | +1.4 days per decade |
| Growing days | 107 days | 108 days | 113 days | 5 days more | +2.5 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
87 years, 1935 to 2025A day with at least 30.3 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 81.7 mm (3.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 30.3 mm (1.2 in) | |
| 5 years | 42.4 mm (1.7 in) | |
| 10 years | 51.1 mm (2.0 in) | |
| 25 years | 62.8 mm (2.5 in) | |
| 50 years | 72.0 mm (2.8 in) | |
| 100 years | 81.7 mm (3.2 in) | Longer than the 87 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 87 years of values from 1935 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: 81.3 mm (3.2 in) in 1986; 78.7 mm (3.1 in) in 1984; 76.2 mm (3.0 in) in 2011.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2008 to 2025 against 1961 to 1990Over 2008 to 2025, Simpson 6 N - Wildhorse had a mean temperature of 5.6 C (42.0 F) and 307.6 mm (12.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Terry 21 NNW (United States, 411 km away), Wibaux 2 E (United States, 503 km away) and Bowman (United States, 600 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Terry 21 NNW | United States | 411 km (255 mi) | 5.7 C (42.2 F) | 334.9 mm (13.2 in) | 0.85 |
| Wibaux 2 E | United States | 503 km (313 mi) | 5.5 C (41.9 F) | 347.1 mm (13.7 in) | 0.92 |
| Bowman | United States | 600 km (373 mi) | 5.8 C (42.5 F) | 400.3 mm (15.8 in) | 0.92 |
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-16).