Colstrip Weather Records (USC00241905)
Record envelope, standing records and threshold days for Colstrip (USC00241905), Montana, United States, with 100 years of record.
Key Facts for Colstrip
- Colstrip (USC00241905) is a weather station in Montana, United States at 45.89 latitude and -106.63 longitude, 981 m (3,218 ft) above sea level.
- The station reports from 1927 to 2026, 100 years of record.
- 1,464 records set at Colstrip still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Colstrip set a daily record high minimum temperature of 20.6 C (69.1 F) on 28 August 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, 45.89 latitude, -106.63 longitude.
- Elevation: 981 m (3,218 ft).
- Period of record: 1927 to 2026, 100 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
13 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.6 C (69.1 F) | -41.1 C (-42.0 F) | 16.7 C (62.1 F) | -26.7 C (-16.1 F) |
| Feb | 22.2 C (72.0 F) | -45.6 C (-50.1 F) | 20.0 C (68.0 F) | -22.2 C (-8.0 F) |
| Mar | 27.2 C (81.0 F) | -33.3 C (-27.9 F) | 27.2 C (81.0 F) | -15.0 C (5.0 F) |
| Apr | 32.2 C (90.0 F) | -25.0 C (-13.0 F) | 29.4 C (84.9 F) | -6.1 C (21.0 F) |
| May | 37.2 C (99.0 F) | -10.6 C (12.9 F) | 35.6 C (96.1 F) | -2.8 C (27.0 F) |
| Jun | 42.2 C (108.0 F) | -2.2 C (28.0 F) | 32.2 C (90.0 F) | 4.4 C (39.9 F) |
| Jul | 43.3 C (109.9 F) | 1.1 C (34.0 F) | 42.8 C (109.0 F) | 13.9 C (57.0 F) |
| Aug | 43.9 C (111.0 F) | 0.6 C (33.1 F) | 38.3 C (100.9 F) | 10.0 C (50.0 F) |
| Sep | 40.6 C (105.1 F) | -15.0 C (5.0 F) | n/a | n/a |
| Oct | 34.4 C (93.9 F) | -22.2 C (-8.0 F) | n/a | n/a |
| Nov | 26.7 C (80.1 F) | -35.6 C (-32.1 F) | n/a | n/a |
| Dec | 23.3 C (73.9 F) | -38.9 C (-38.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1927 | 14 |
| 1928 | 13 |
| 1929 | 21 |
| 1930 | 27 |
| 1931 | 28 |
| 1932 | 24 |
| 1933 | 12 |
| 1934 | 30 |
| 1935 | 18 |
| 1936 | 63 |
| 1937 | 21 |
| 1938 | 7 |
| 1939 | 19 |
| 1940 | 15 |
| 1941 | 4 |
| 1942 | 14 |
| 1943 | 22 |
| 1944 | 12 |
| 1945 | 10 |
| 1946 | 9 |
| 1947 | 16 |
| 1948 | 9 |
| 1949 | 13 |
| 1950 | 25 |
| 1951 | 20 |
| 1952 | 10 |
| 1953 | 18 |
| 1954 | 19 |
| 1955 | 20 |
| 1956 | 9 |
| 1957 | 8 |
| 1958 | 14 |
| 1959 | 18 |
| 1960 | 22 |
| 1961 | 12 |
| 1962 | 15 |
| 1963 | 18 |
| 1964 | 20 |
| 1965 | 15 |
| 1966 | 14 |
| 1967 | 9 |
| 1968 | 10 |
| 1969 | 14 |
| 1970 | 10 |
| 1971 | 12 |
| 1972 | 24 |
| 1973 | 3 |
| 1974 | 6 |
| 1976 | 6 |
| 1977 | 4 |
| 1978 | 4 |
| 1979 | 8 |
| 1980 | 20 |
| 1981 | 4 |
| 1982 | 6 |
| 1983 | 19 |
| 1984 | 16 |
| 1985 | 32 |
| 1986 | 17 |
| 1987 | 12 |
| 1988 | 23 |
| 1989 | 20 |
| 1990 | 18 |
| 1991 | 18 |
| 1992 | 29 |
| 1993 | 20 |
| 1994 | 13 |
| 1995 | 15 |
| 1996 | 19 |
| 1997 | 23 |
| 1998 | 9 |
| 1999 | 17 |
| 2000 | 4 |
| 2001 | 9 |
| 2002 | 12 |
| 2003 | 8 |
| 2004 | 11 |
| 2005 | 18 |
| 2006 | 9 |
| 2007 | 8 |
| 2008 | 6 |
| 2009 | 12 |
| 2010 | 3 |
| 2011 | 6 |
| 2012 | 13 |
| 2013 | 12 |
| 2014 | 13 |
| 2015 | 17 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 10 |
| 2019 | 15 |
| 2020 | 17 |
| 2021 | 18 |
| 2022 | 18 |
| 2023 | 6 |
| 2024 | 11 |
| 2025 | 16 |
| 2026 | 16 |
All-Time Record Progression
7 new records| Date | Kind | Detail |
|---|---|---|
| 1961-08-06 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 1974-07-10 | Record high minimum temperature | Record high minimum temperature 26.1 C (79.0 F) |
| 1989-02-02 | Record low maximum temperature | Record low maximum temperature -28.9 C (-20.0 F) |
| 1997-04-04 | Record daily snowfall | Record daily snowfall 40.6 cm (16.0 in) |
| 2018-02-08 | Record snow depth | Record snow depth 58.4 cm (23.0 in) |
| 2018-02-09 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 2018-02-20 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
Wettest Day of Each Month
Jun: 95.8 mm (3.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 24.6 mm (1.0 in) | 15 January 1949 |
| Feb | 23.1 mm (0.9 in) | 21 February 1931 |
| Mar | 39.1 mm (1.5 in) | 22 March 1933 |
| Apr | 71.6 mm (2.8 in) | 26 April 1969 |
| May | 72.4 mm (2.9 in) | 30 May 2013 |
| Jun | 95.8 mm (3.8 in) | 17 June 1944 |
| Jul | 47.8 mm (1.9 in) | 7 July 1928 |
| Aug | 80.3 mm (3.2 in) | 24 August 2014 |
| Sep | 61.2 mm (2.4 in) | 12 September 2019 |
| Oct | 62.5 mm (2.5 in) | 31 October 1974 |
| Nov | 30.0 mm (1.2 in) | 1 November 1957 |
| Dec | 27.7 mm (1.1 in) | 19 December 2025 |
Period of Record Coverage
1927 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1927 | 295 | 81% | No |
| 1928 | 345 | 94% | Yes |
| 1929 | 363 | 99% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 364 | 99% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 362 | 99% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 359 | 98% | Yes |
| 1941 | 361 | 99% | Yes |
| 1942 | 364 | 100% | Yes |
| 1943 | 270 | 74% | No |
| 1944 | 262 | 72% | No |
| 1945 | 363 | 99% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 364 | 99% | Yes |
| 1949 | 361 | 99% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 361 | 99% | Yes |
| 1952 | 363 | 99% | Yes |
| 1953 | 356 | 98% | Yes |
| 1954 | 343 | 94% | Yes |
| 1955 | 352 | 96% | Yes |
| 1956 | 330 | 90% | Yes |
| 1957 | 341 | 93% | Yes |
| 1958 | 360 | 99% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 362 | 99% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 362 | 99% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 361 | 99% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 181 | 50% | No |
| 1974 | 256 | 70% | No |
| 1976 | 340 | 93% | Yes |
| 1977 | 358 | 98% | Yes |
| 1978 | 348 | 95% | Yes |
| 1979 | 290 | 79% | No |
| 1980 | 288 | 79% | No |
| 1981 | 302 | 83% | No |
| 1982 | 357 | 98% | Yes |
| 1983 | 359 | 98% | Yes |
| 1984 | 362 | 99% | Yes |
| 1985 | 362 | 99% | Yes |
| 1986 | 362 | 99% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 361 | 99% | Yes |
| 1990 | 363 | 99% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 362 | 99% | Yes |
| 1994 | 363 | 99% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 333 | 91% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 333 | 91% | Yes |
| 2000 | 364 | 99% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 362 | 99% | Yes |
| 2004 | 360 | 98% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 363 | 99% | Yes |
| 2007 | 357 | 98% | Yes |
| 2008 | 329 | 90% | No |
| 2009 | 362 | 99% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 363 | 99% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 360 | 99% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 363 | 99% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 360 | 98% | Yes |
| 2021 | 354 | 97% | Yes |
| 2022 | 338 | 93% | Yes |
| 2023 | 246 | 67% | No |
| 2024 | 337 | 92% | Yes |
| 2025 | 334 | 92% | Yes |
| 2026 | 234 | 64% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 28 August 2026 | Colstrip, US | daily high min (Provisional) | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 12 years | 16 of 100 (Routine) |
| 27 July 2026 | Colstrip, US | daily high min (Tie) | 22.8 C (73.0 F) | tie | 95 years | 9 of 100 (Routine) |
| 26 July 2026 | Colstrip, US | daily high min (Tie) | 21.7 C (71.1 F) | tie | 20 years | 4 of 100 (Routine) |
| 25 July 2026 | Colstrip, US | daily high max | 41.7 C (107.1 F) | 1.1 C (2.0 F) | 92 years | 39 of 100 (Notable) |
| 24 July 2026 | Colstrip, US | daily high max (Tie) | 40.6 C (105.1 F) | tie | 95 years | 9 of 100 (Routine) |
| 19 July 2026 | Colstrip, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 71 years | 7 of 100 (Routine) |
| 12 July 2026 | Colstrip, US | daily high max | 42.8 C (109.0 F) | 3.9 C (7.0 F) | 24 years | 25 of 100 (Routine) |
| 12 July 2026 | Colstrip, US | daily high min | 22.2 C (72.0 F) | 0.5 C (0.9 F) | 25 years | 18 of 100 (Routine) |
| 11 July 2026 | Colstrip, US | daily high max | 38.9 C (102.0 F) | 0.6 C (1.1 F) | 87 years | 37 of 100 (Notable) |
| 29 May 2026 | Colstrip, US | daily high min (Tie) | 18.3 C (64.9 F) | tie | 89 years | 9 of 100 (Routine) |
| 28 May 2026 | Colstrip, US | daily high min | 20.0 C (68.0 F) | 4.4 C (7.9 F) | 81 years | 44 of 100 (Notable) |
| 27 May 2026 | Colstrip, US | daily high min (Tie) | 19.4 C (66.9 F) | tie | 89 years | 9 of 100 (Routine) |
| 26 May 2026 | Colstrip, US | daily high min | 18.3 C (64.9 F) | 3.3 C (5.9 F) | 23 years | 23 of 100 (Routine) |
| 22 May 2026 | Colstrip, US | daily rain | 71.1 mm (2.8 in) | 39.4 mm (1.6 in) | 15 years | 54 of 100 (Notable) |
| 13 May 2026 | Colstrip, US | daily high max | 35.0 C (95.0 F) | 1.7 C (3.1 F) | 24 years | 19 of 100 (Routine) |
| 22 April 2026 | Colstrip, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 87 years | 9 of 100 (Routine) |
| 22 April 2026 | Colstrip, US | daily high min (Tie) | 8.9 C (48.0 F) | tie | 84 years | 8 of 100 (Routine) |
| 12 April 2026 | Colstrip, US | daily high min | 7.8 C (46.0 F) | 0.6 C (1.1 F) | 95 years | 39 of 100 (Notable) |
| 20 March 2026 | Colstrip, US | monthly high max (Tie) | 27.2 C (81.0 F) | tie | 21 years | 6 of 100 (Routine) |
| 19 March 2026 | Colstrip, US | daily high max | 26.7 C (80.1 F) | 0.6 C (1.1 F) | 8 years | 12 of 100 (Routine) |
Climate Trend
82 complete years, 1929 to 2022| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1929 | 6.5 C | -1.43 C |
| 1930 | 8.5 C | +0.56 C |
| 1931 | 9.5 C | +1.60 C |
| 1932 | 7.5 C | -0.43 C |
| 1933 | 8.3 C | +0.39 C |
| 1934 | 9.8 C | +1.87 C |
| 1935 | 7.7 C | -0.20 C |
| 1936 | 7.9 C | -0.01 C |
| 1937 | 7.2 C | -0.70 C |
| 1938 | 8.4 C | +0.50 C |
| 1939 | 9.1 C | +1.15 C |
| 1940 | 8.4 C | +0.44 C |
| 1941 | 8.2 C | +0.33 C |
| 1942 | 7.4 C | -0.47 C |
| 1945 | 7.2 C | -0.73 C |
| 1946 | 8.4 C | +0.47 C |
| 1947 | 7.7 C | -0.17 C |
| 1948 | 8.0 C | +0.07 C |
| 1949 | 6.7 C | -1.20 C |
| 1950 | 6.0 C | -1.89 C |
| 1951 | 5.4 C | -2.48 C |
| 1952 | 8.1 C | +0.20 C |
| 1953 | 9.4 C | +1.44 C |
| 1954 | 8.4 C | +0.47 C |
| 1955 | 6.9 C | -0.97 C |
| 1956 | 8.2 C | +0.26 C |
| 1957 | 7.9 C | +0.00 C |
| 1958 | 8.7 C | +0.80 C |
| 1959 | 7.5 C | -0.41 C |
| 1960 | 8.3 C | +0.38 C |
| 1961 | 9.2 C | +1.30 C |
| 1962 | 8.4 C | +0.46 C |
| 1963 | 8.9 C | +0.97 C |
| 1964 | 7.4 C | -0.50 C |
| 1965 | 6.9 C | -1.02 C |
| 1966 | 7.7 C | -0.20 C |
| 1967 | 8.1 C | +0.15 C |
| 1968 | 7.7 C | -0.26 C |
| 1969 | 7.1 C | -0.78 C |
| 1970 | 7.3 C | -0.66 C |
| 1971 | 7.6 C | -0.31 C |
| 1972 | 7.3 C | -0.58 C |
| 1977 | 8.2 C | +0.32 C |
| 1978 | 6.6 C | -1.33 C |
| 1982 | 6.3 C | -1.62 C |
| 1983 | 8.1 C | +0.14 C |
| 1984 | 7.7 C | -0.17 C |
| 1985 | 6.3 C | -1.61 C |
| 1986 | 8.6 C | +0.66 C |
| 1987 | 9.3 C | +1.39 C |
| 1988 | 9.3 C | +1.38 C |
| 1989 | 7.3 C | -0.64 C |
| 1990 | 8.6 C | +0.69 C |
| 1991 | 8.4 C | +0.48 C |
| 1992 | 8.5 C | +0.60 C |
| 1993 | 6.6 C | -1.33 C |
| 1994 | 7.9 C | -0.02 C |
| 1995 | 7.6 C | -0.31 C |
| 1996 | 6.0 C | -1.94 C |
| 1998 | 8.9 C | +0.97 C |
| 2000 | 8.1 C | +0.20 C |
| 2001 | 9.1 C | +1.23 C |
| 2002 | 7.8 C | -0.12 C |
| 2003 | 7.5 C | -0.42 C |
| 2004 | 8.6 C | +0.72 C |
| 2005 | 8.3 C | +0.42 C |
| 2006 | 9.2 C | +1.26 C |
| 2007 | 8.9 C | +0.95 C |
| 2009 | 7.1 C | -0.78 C |
| 2010 | 7.6 C | -0.35 C |
| 2011 | 7.5 C | -0.41 C |
| 2012 | 9.5 C | +1.56 C |
| 2013 | 7.5 C | -0.37 C |
| 2014 | 7.4 C | -0.50 C |
| 2015 | 9.0 C | +1.09 C |
| 2016 | 9.2 C | +1.27 C |
| 2017 | 8.3 C | +0.38 C |
| 2018 | 6.7 C | -1.21 C |
| 2019 | 6.0 C | -1.89 C |
| 2020 | 8.2 C | +0.27 C |
| 2021 | 8.1 C | +0.22 C |
| 2022 | 8.0 C | +0.12 C |
The fitted trend in annual mean temperature here over 1929 to 2022 is 0.01 C (-0.07 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.01 F (-0.12 to 0.14) per decade. The slope is a straight line fitted to 82 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.01 C (-0.07 to 0.08) per decade | 0.01 F (-0.12 to 0.14) per decade | 1929 to 2022 | 82 | Not clearly different from zero |
| Mean daily maximum | -0.2 C (-0.3 to -0.1) per decade | -0.4 F (-0.5 to -0.2) per decade | 1929 to 2022 | 82 | Fall |
| Mean daily minimum | 0.2 C (0.2 to 0.3) per decade | 0.4 F (0.3 to 0.5) per decade | 1929 to 2022 | 82 | 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
1927 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 1961 | 38.3 C (100.9 F) | 99 |
| Coldest night (TNn) | -45.6 C (-50.1 F) | 1936 | -31.7 C (-25.1 F) | 99 |
| Wettest day (Rx1day) | 95.8 mm (3.8 in) | 1944 | 33.0 mm (1.3 in) | 99 |
| Wettest five days (Rx5day) | 165.2 mm (6.5 in) | 2013 | 51.5 mm (2.0 in) | 99 |
| Longest dry spell (CDD) | 59 days | 1987 | 32 days | 99 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1927 | 35.6 C (96.1 F) |
| 1928 | 39.4 C (102.9 F) |
| 1929 | 41.7 C (107.1 F) |
| 1930 | 42.8 C (109.0 F) |
| 1931 | 42.2 C (108.0 F) |
| 1932 | 38.9 C (102.0 F) |
| 1933 | 40.6 C (105.1 F) |
| 1934 | 41.7 C (107.1 F) |
| 1935 | 41.7 C (107.1 F) |
| 1936 | 43.3 C (109.9 F) |
| 1937 | 41.7 C (107.1 F) |
| 1938 | 38.3 C (100.9 F) |
| 1939 | 40.0 C (104.0 F) |
| 1940 | 40.0 C (104.0 F) |
| 1941 | 40.0 C (104.0 F) |
| 1942 | 37.8 C (100.0 F) |
| 1943 | 37.2 C (99.0 F) |
| 1944 | 35.0 C (95.0 F) |
| 1945 | 39.4 C (102.9 F) |
| 1946 | 38.3 C (100.9 F) |
| 1947 | 40.6 C (105.1 F) |
| 1948 | 38.9 C (102.0 F) |
| 1949 | 40.0 C (104.0 F) |
| 1950 | 38.9 C (102.0 F) |
| 1951 | 37.8 C (100.0 F) |
| 1952 | 37.2 C (99.0 F) |
| 1953 | 38.3 C (100.9 F) |
| 1954 | 40.0 C (104.0 F) |
| 1955 | 38.3 C (100.9 F) |
| 1956 | 38.9 C (102.0 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 38.3 C (100.9 F) |
| 1959 | 40.0 C (104.0 F) |
| 1960 | 41.7 C (107.1 F) |
| 1961 | 43.9 C (111.0 F) |
| 1962 | 37.2 C (99.0 F) |
| 1963 | 37.8 C (100.0 F) |
| 1964 | 38.9 C (102.0 F) |
| 1965 | 39.4 C (102.9 F) |
| 1966 | 41.1 C (106.0 F) |
| 1967 | 36.7 C (98.1 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 37.8 C (100.0 F) |
| 1970 | 39.4 C (102.9 F) |
| 1971 | 39.4 C (102.9 F) |
| 1972 | 36.7 C (98.1 F) |
| 1973 | 39.4 C (102.9 F) |
| 1974 | 38.3 C (100.9 F) |
| 1976 | 38.3 C (100.9 F) |
| 1977 | 38.9 C (102.0 F) |
| 1978 | 38.3 C (100.9 F) |
| 1979 | 37.2 C (99.0 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 38.9 C (102.0 F) |
| 1982 | 38.3 C (100.9 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 37.8 C (100.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 36.1 C (97.0 F) |
| 1988 | 39.4 C (102.9 F) |
| 1989 | 40.0 C (104.0 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 37.2 C (99.0 F) |
| 1992 | 37.2 C (99.0 F) |
| 1993 | 33.3 C (91.9 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 39.4 C (102.9 F) |
| 1996 | 36.7 C (98.1 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 37.2 C (99.0 F) |
| 1999 | 38.3 C (100.9 F) |
| 2000 | 37.2 C (99.0 F) |
| 2001 | 40.0 C (104.0 F) |
| 2002 | 42.2 C (108.0 F) |
| 2003 | 35.0 C (95.0 F) |
| 2004 | 38.3 C (100.9 F) |
| 2005 | 38.3 C (100.9 F) |
| 2006 | 37.8 C (100.0 F) |
| 2007 | 40.6 C (105.1 F) |
| 2008 | 37.8 C (100.0 F) |
| 2009 | 36.1 C (97.0 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 40.0 C (104.0 F) |
| 2013 | 38.3 C (100.9 F) |
| 2014 | 37.8 C (100.0 F) |
| 2015 | 39.4 C (102.9 F) |
| 2016 | 37.2 C (99.0 F) |
| 2017 | 37.8 C (100.0 F) |
| 2018 | 38.9 C (102.0 F) |
| 2019 | 35.0 C (95.0 F) |
| 2020 | 38.3 C (100.9 F) |
| 2021 | 40.0 C (104.0 F) |
| 2022 | 40.6 C (105.1 F) |
| 2023 | 35.0 C (95.0 F) |
| 2024 | 40.0 C (104.0 F) |
| 2025 | 39.4 C (102.9 F) |
| 2026 | 42.8 C (109.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1927 | -34.4 C (-29.9 F) |
| 1928 | -40.0 C (-40.0 F) |
| 1929 | -37.2 C (-35.0 F) |
| 1930 | -41.1 C (-42.0 F) |
| 1931 | -23.9 C (-11.0 F) |
| 1932 | -34.4 C (-29.9 F) |
| 1933 | -37.8 C (-36.0 F) |
| 1934 | -30.6 C (-23.1 F) |
| 1935 | -33.9 C (-29.0 F) |
| 1936 | -45.6 C (-50.1 F) |
| 1937 | -40.0 C (-40.0 F) |
| 1938 | -36.1 C (-33.0 F) |
| 1939 | -39.4 C (-38.9 F) |
| 1940 | -35.0 C (-31.0 F) |
| 1941 | -28.3 C (-18.9 F) |
| 1942 | -37.2 C (-35.0 F) |
| 1943 | -38.9 C (-38.0 F) |
| 1944 | -26.7 C (-16.1 F) |
| 1945 | -34.4 C (-29.9 F) |
| 1946 | -32.2 C (-26.0 F) |
| 1947 | -28.9 C (-20.0 F) |
| 1948 | -30.6 C (-23.1 F) |
| 1949 | -36.7 C (-34.1 F) |
| 1950 | -34.4 C (-29.9 F) |
| 1951 | -34.4 C (-29.9 F) |
| 1952 | -34.4 C (-29.9 F) |
| 1953 | -27.2 C (-17.0 F) |
| 1954 | -40.0 C (-40.0 F) |
| 1955 | -32.2 C (-26.0 F) |
| 1956 | -30.6 C (-23.1 F) |
| 1957 | -37.2 C (-35.0 F) |
| 1958 | -28.3 C (-18.9 F) |
| 1959 | -35.6 C (-32.1 F) |
| 1960 | -33.9 C (-29.0 F) |
| 1961 | -28.3 C (-18.9 F) |
| 1962 | -34.4 C (-29.9 F) |
| 1963 | -37.8 C (-36.0 F) |
| 1964 | -37.2 C (-35.0 F) |
| 1965 | -35.0 C (-31.0 F) |
| 1966 | -33.3 C (-27.9 F) |
| 1967 | -32.8 C (-27.0 F) |
| 1968 | -32.2 C (-26.0 F) |
| 1969 | -36.7 C (-34.1 F) |
| 1970 | -33.3 C (-27.9 F) |
| 1971 | -34.4 C (-29.9 F) |
| 1972 | -35.0 C (-31.0 F) |
| 1973 | -31.7 C (-25.1 F) |
| 1974 | -32.2 C (-26.0 F) |
| 1976 | -27.8 C (-18.0 F) |
| 1977 | -30.0 C (-22.0 F) |
| 1978 | -30.0 C (-22.0 F) |
| 1979 | -30.0 C (-22.0 F) |
| 1980 | -28.9 C (-20.0 F) |
| 1981 | -28.9 C (-20.0 F) |
| 1982 | -31.7 C (-25.1 F) |
| 1983 | -38.9 C (-38.0 F) |
| 1984 | -27.8 C (-18.0 F) |
| 1985 | -34.4 C (-29.9 F) |
| 1986 | -25.0 C (-13.0 F) |
| 1987 | -21.1 C (-6.0 F) |
| 1988 | -30.0 C (-22.0 F) |
| 1989 | -37.8 C (-36.0 F) |
| 1990 | -35.6 C (-32.1 F) |
| 1991 | -30.6 C (-23.1 F) |
| 1992 | -27.8 C (-18.0 F) |
| 1993 | -28.3 C (-18.9 F) |
| 1994 | -27.8 C (-18.0 F) |
| 1995 | -26.1 C (-15.0 F) |
| 1996 | -35.6 C (-32.1 F) |
| 1997 | -33.3 C (-27.9 F) |
| 1998 | -32.8 C (-27.0 F) |
| 1999 | -20.0 C (-4.0 F) |
| 2000 | -25.6 C (-14.1 F) |
| 2001 | -26.1 C (-15.0 F) |
| 2002 | -25.6 C (-14.1 F) |
| 2003 | -28.9 C (-20.0 F) |
| 2004 | -30.0 C (-22.0 F) |
| 2005 | -31.7 C (-25.1 F) |
| 2006 | -30.0 C (-22.0 F) |
| 2007 | -24.4 C (-11.9 F) |
| 2008 | -31.1 C (-24.0 F) |
| 2009 | -28.9 C (-20.0 F) |
| 2010 | -26.7 C (-16.1 F) |
| 2011 | -30.0 C (-22.0 F) |
| 2012 | -23.9 C (-11.0 F) |
| 2013 | -31.7 C (-25.1 F) |
| 2014 | -30.6 C (-23.1 F) |
| 2015 | -25.0 C (-13.0 F) |
| 2016 | -31.7 C (-25.1 F) |
| 2017 | -27.2 C (-17.0 F) |
| 2018 | -30.0 C (-22.0 F) |
| 2019 | -31.1 C (-24.0 F) |
| 2020 | -23.9 C (-11.0 F) |
| 2021 | -36.1 C (-33.0 F) |
| 2022 | -31.7 C (-25.1 F) |
| 2023 | -26.7 C (-16.1 F) |
| 2024 | -32.8 C (-27.0 F) |
| 2025 | -31.7 C (-25.1 F) |
| 2026 | -26.7 C (-16.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1927 | 37.1 mm (1.5 in) |
| 1928 | 47.8 mm (1.9 in) |
| 1929 | 27.9 mm (1.1 in) |
| 1930 | 27.9 mm (1.1 in) |
| 1931 | 23.1 mm (0.9 in) |
| 1932 | 42.2 mm (1.7 in) |
| 1933 | 39.1 mm (1.5 in) |
| 1934 | 19.8 mm (0.8 in) |
| 1935 | 28.7 mm (1.1 in) |
| 1936 | 18.5 mm (0.7 in) |
| 1937 | 21.3 mm (0.8 in) |
| 1938 | 24.4 mm (1.0 in) |
| 1939 | 25.7 mm (1.0 in) |
| 1940 | 32.0 mm (1.3 in) |
| 1941 | 35.6 mm (1.4 in) |
| 1942 | 30.5 mm (1.2 in) |
| 1943 | 37.1 mm (1.5 in) |
| 1944 | 95.8 mm (3.8 in) |
| 1945 | 36.3 mm (1.4 in) |
| 1946 | 54.6 mm (2.1 in) |
| 1947 | 23.6 mm (0.9 in) |
| 1948 | 45.0 mm (1.8 in) |
| 1949 | 24.6 mm (1.0 in) |
| 1950 | 33.0 mm (1.3 in) |
| 1951 | 31.8 mm (1.3 in) |
| 1952 | 23.9 mm (0.9 in) |
| 1953 | 46.0 mm (1.8 in) |
| 1954 | 17.8 mm (0.7 in) |
| 1955 | 54.4 mm (2.1 in) |
| 1956 | 33.8 mm (1.3 in) |
| 1957 | 45.7 mm (1.8 in) |
| 1958 | 52.6 mm (2.1 in) |
| 1959 | 19.1 mm (0.8 in) |
| 1960 | 22.6 mm (0.9 in) |
| 1961 | 31.8 mm (1.3 in) |
| 1962 | 33.8 mm (1.3 in) |
| 1963 | 29.7 mm (1.2 in) |
| 1964 | 46.5 mm (1.8 in) |
| 1965 | 21.6 mm (0.9 in) |
| 1966 | 27.4 mm (1.1 in) |
| 1967 | 38.4 mm (1.5 in) |
| 1968 | 38.6 mm (1.5 in) |
| 1969 | 71.6 mm (2.8 in) |
| 1970 | 44.7 mm (1.8 in) |
| 1971 | 50.0 mm (2.0 in) |
| 1972 | 30.2 mm (1.2 in) |
| 1973 | 10.7 mm (0.4 in) |
| 1974 | 62.5 mm (2.5 in) |
| 1976 | 39.1 mm (1.5 in) |
| 1977 | 34.8 mm (1.4 in) |
| 1978 | 60.5 mm (2.4 in) |
| 1979 | 13.0 mm (0.5 in) |
| 1980 | 22.9 mm (0.9 in) |
| 1981 | 28.4 mm (1.1 in) |
| 1982 | 22.4 mm (0.9 in) |
| 1983 | 15.5 mm (0.6 in) |
| 1984 | 20.3 mm (0.8 in) |
| 1985 | 30.0 mm (1.2 in) |
| 1986 | 41.9 mm (1.6 in) |
| 1987 | 26.9 mm (1.1 in) |
| 1988 | 16.3 mm (0.6 in) |
| 1989 | 38.1 mm (1.5 in) |
| 1990 | 37.3 mm (1.5 in) |
| 1991 | 55.9 mm (2.2 in) |
| 1992 | 28.4 mm (1.1 in) |
| 1993 | 50.0 mm (2.0 in) |
| 1994 | 31.5 mm (1.2 in) |
| 1995 | 24.6 mm (1.0 in) |
| 1996 | 31.5 mm (1.2 in) |
| 1997 | 45.2 mm (1.8 in) |
| 1998 | 25.9 mm (1.0 in) |
| 1999 | 34.0 mm (1.3 in) |
| 2000 | 30.0 mm (1.2 in) |
| 2001 | 40.6 mm (1.6 in) |
| 2002 | 45.0 mm (1.8 in) |
| 2003 | 26.7 mm (1.1 in) |
| 2004 | 25.1 mm (1.0 in) |
| 2005 | 67.1 mm (2.6 in) |
| 2006 | 31.8 mm (1.3 in) |
| 2007 | 66.5 mm (2.6 in) |
| 2008 | 36.3 mm (1.4 in) |
| 2009 | 33.3 mm (1.3 in) |
| 2010 | 39.9 mm (1.6 in) |
| 2011 | 51.3 mm (2.0 in) |
| 2012 | 16.0 mm (0.6 in) |
| 2013 | 72.4 mm (2.9 in) |
| 2014 | 80.3 mm (3.2 in) |
| 2015 | 12.7 mm (0.5 in) |
| 2016 | 53.3 mm (2.1 in) |
| 2017 | 21.6 mm (0.9 in) |
| 2018 | 42.7 mm (1.7 in) |
| 2019 | 61.2 mm (2.4 in) |
| 2020 | 20.3 mm (0.8 in) |
| 2021 | 14.0 mm (0.6 in) |
| 2022 | 25.7 mm (1.0 in) |
| 2023 | 38.4 mm (1.5 in) |
| 2024 | 50.8 mm (2.0 in) |
| 2025 | 29.2 mm (1.1 in) |
| 2026 | 71.1 mm (2.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1927 | 50.0 mm (2.0 in) |
| 1928 | 51.6 mm (2.0 in) |
| 1929 | 42.8 mm (1.7 in) |
| 1930 | 29.5 mm (1.2 in) |
| 1931 | 41.2 mm (1.6 in) |
| 1932 | 68.8 mm (2.7 in) |
| 1933 | 51.0 mm (2.0 in) |
| 1934 | 32.5 mm (1.3 in) |
| 1935 | 63.8 mm (2.5 in) |
| 1936 | 22.0 mm (0.9 in) |
| 1937 | 31.1 mm (1.2 in) |
| 1938 | 55.9 mm (2.2 in) |
| 1939 | 52.6 mm (2.1 in) |
| 1940 | 65.5 mm (2.6 in) |
| 1941 | 45.5 mm (1.8 in) |
| 1942 | 64.1 mm (2.5 in) |
| 1943 | 51.2 mm (2.0 in) |
| 1944 | 132.9 mm (5.2 in) |
| 1945 | 49.7 mm (2.0 in) |
| 1946 | 63.3 mm (2.5 in) |
| 1947 | 37.5 mm (1.5 in) |
| 1948 | 84.6 mm (3.3 in) |
| 1949 | 34.1 mm (1.3 in) |
| 1950 | 35.5 mm (1.4 in) |
| 1951 | 78.4 mm (3.1 in) |
| 1952 | 37.6 mm (1.5 in) |
| 1953 | 46.0 mm (1.8 in) |
| 1954 | 44.8 mm (1.8 in) |
| 1955 | 61.3 mm (2.4 in) |
| 1956 | 40.1 mm (1.6 in) |
| 1957 | 60.7 mm (2.4 in) |
| 1958 | 91.5 mm (3.6 in) |
| 1959 | 35.1 mm (1.4 in) |
| 1960 | 40.7 mm (1.6 in) |
| 1961 | 56.7 mm (2.2 in) |
| 1962 | 60.5 mm (2.4 in) |
| 1963 | 42.9 mm (1.7 in) |
| 1964 | 58.1 mm (2.3 in) |
| 1965 | 29.2 mm (1.1 in) |
| 1966 | 31.5 mm (1.2 in) |
| 1967 | 93.2 mm (3.7 in) |
| 1968 | 49.2 mm (1.9 in) |
| 1969 | 119.8 mm (4.7 in) |
| 1970 | 58.9 mm (2.3 in) |
| 1971 | 84.8 mm (3.3 in) |
| 1972 | 66.8 mm (2.6 in) |
| 1973 | 13.5 mm (0.5 in) |
| 1974 | 62.5 mm (2.5 in) |
| 1976 | 41.6 mm (1.6 in) |
| 1977 | 59.7 mm (2.4 in) |
| 1978 | 121.9 mm (4.8 in) |
| 1979 | 26.5 mm (1.0 in) |
| 1980 | 38.9 mm (1.5 in) |
| 1981 | 40.2 mm (1.6 in) |
| 1982 | 54.7 mm (2.2 in) |
| 1983 | 23.9 mm (0.9 in) |
| 1984 | 52.6 mm (2.1 in) |
| 1985 | 62.3 mm (2.5 in) |
| 1986 | 65.9 mm (2.6 in) |
| 1987 | 50.3 mm (2.0 in) |
| 1988 | 22.6 mm (0.9 in) |
| 1989 | 51.5 mm (2.0 in) |
| 1990 | 48.7 mm (1.9 in) |
| 1991 | 62.5 mm (2.5 in) |
| 1992 | 40.2 mm (1.6 in) |
| 1993 | 77.0 mm (3.0 in) |
| 1994 | 59.7 mm (2.4 in) |
| 1995 | 50.3 mm (2.0 in) |
| 1996 | 58.2 mm (2.3 in) |
| 1997 | 83.6 mm (3.3 in) |
| 1998 | 47.5 mm (1.9 in) |
| 1999 | 39.9 mm (1.6 in) |
| 2000 | 38.6 mm (1.5 in) |
| 2001 | 40.6 mm (1.6 in) |
| 2002 | 54.6 mm (2.1 in) |
| 2003 | 37.8 mm (1.5 in) |
| 2004 | 37.5 mm (1.5 in) |
| 2005 | 124.5 mm (4.9 in) |
| 2006 | 39.4 mm (1.6 in) |
| 2007 | 78.1 mm (3.1 in) |
| 2008 | 102.9 mm (4.1 in) |
| 2009 | 49.8 mm (2.0 in) |
| 2010 | 67.1 mm (2.6 in) |
| 2011 | 132.8 mm (5.2 in) |
| 2012 | 29.7 mm (1.2 in) |
| 2013 | 165.2 mm (6.5 in) |
| 2014 | 105.7 mm (4.2 in) |
| 2015 | 23.2 mm (0.9 in) |
| 2016 | 75.4 mm (3.0 in) |
| 2017 | 41.2 mm (1.6 in) |
| 2018 | 54.1 mm (2.1 in) |
| 2019 | 69.6 mm (2.7 in) |
| 2020 | 41.4 mm (1.6 in) |
| 2021 | 28.0 mm (1.1 in) |
| 2022 | 48.2 mm (1.9 in) |
| 2023 | 65.4 mm (2.6 in) |
| 2024 | 59.2 mm (2.3 in) |
| 2025 | 71.4 mm (2.8 in) |
| 2026 | 74.7 mm (2.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1927 | 23 days |
| 1928 | 32 days |
| 1929 | 45 days |
| 1930 | 38 days |
| 1931 | 38 days |
| 1932 | 31 days |
| 1933 | 44 days |
| 1934 | 46 days |
| 1935 | 24 days |
| 1936 | 32 days |
| 1937 | 48 days |
| 1938 | 37 days |
| 1939 | 40 days |
| 1940 | 47 days |
| 1941 | 42 days |
| 1942 | 27 days |
| 1943 | 41 days |
| 1944 | 31 days |
| 1945 | 33 days |
| 1946 | 24 days |
| 1947 | 29 days |
| 1948 | 38 days |
| 1949 | 50 days |
| 1950 | 29 days |
| 1951 | 32 days |
| 1952 | 29 days |
| 1953 | 26 days |
| 1954 | 33 days |
| 1955 | 32 days |
| 1956 | 25 days |
| 1957 | 35 days |
| 1958 | 18 days |
| 1959 | 31 days |
| 1960 | 32 days |
| 1961 | 27 days |
| 1962 | 22 days |
| 1963 | 50 days |
| 1964 | 18 days |
| 1965 | 42 days |
| 1966 | 23 days |
| 1967 | 24 days |
| 1968 | 17 days |
| 1969 | 38 days |
| 1970 | 47 days |
| 1971 | 21 days |
| 1972 | 21 days |
| 1973 | 28 days |
| 1974 | 42 days |
| 1976 | 34 days |
| 1977 | 30 days |
| 1978 | 41 days |
| 1979 | 36 days |
| 1980 | 52 days |
| 1981 | 28 days |
| 1982 | 20 days |
| 1983 | 47 days |
| 1984 | 29 days |
| 1985 | 30 days |
| 1986 | 30 days |
| 1987 | 59 days |
| 1988 | 33 days |
| 1989 | 20 days |
| 1990 | 37 days |
| 1991 | 38 days |
| 1992 | 52 days |
| 1993 | 28 days |
| 1994 | 40 days |
| 1995 | 24 days |
| 1996 | 36 days |
| 1997 | 22 days |
| 1998 | 37 days |
| 1999 | 38 days |
| 2000 | 18 days |
| 2001 | 36 days |
| 2002 | 28 days |
| 2003 | 48 days |
| 2004 | 51 days |
| 2005 | 27 days |
| 2006 | 30 days |
| 2007 | 30 days |
| 2008 | 23 days |
| 2009 | 28 days |
| 2010 | 37 days |
| 2011 | 25 days |
| 2012 | 33 days |
| 2013 | 17 days |
| 2014 | 21 days |
| 2015 | 22 days |
| 2016 | 29 days |
| 2017 | 30 days |
| 2018 | 19 days |
| 2019 | 21 days |
| 2020 | 34 days |
| 2021 | 34 days |
| 2022 | 18 days |
| 2023 | 39 days |
| 2024 | 39 days |
| 2025 | 42 days |
| 2026 | 22 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
82 years with a frostAcross 82 years with a frost, the median last spring frost at Colstrip falls on 19 May and the median first autumn frost on 21 September, which leaves a median of 127 days between them.
In 1990 to 2022 the median growing season was 136 days. That is 16 days more than in 1929 to 1960.
Fitted over all years, the growing season changes by +2.4 days per decade at this station.
| Measure | Median, all years | Earliest period (1929 to 1960) | Recent period (1990 to 2022) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 19 May | 21 May | 15 May | 6 days earlier | -0.7 days per decade |
| First autumn frost | 21 September | 19 September | 1 October | 12 days later | +1.6 days per decade |
| Growing days | 127 days | 120 days | 136 days | 16 days more | +2.4 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
91 years, 1928 to 2025A day with at least 32.8 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 82.6 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 | 32.8 mm (1.3 in) | |
| 5 years | 45.9 mm (1.8 in) | |
| 10 years | 54.7 mm (2.2 in) | |
| 25 years | 65.8 mm (2.6 in) | |
| 50 years | 74.2 mm (2.9 in) | |
| 100 years | 82.6 mm (3.3 in) | Longer than the 91 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, 91 years of values from 1928 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: 80.3 mm (3.2 in) in 2014; 72.4 mm (2.9 in) in 2013; 71.6 mm (2.8 in) in 1969.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2007 to 2022 against 1961 to 1990Over 2007 to 2022, Colstrip had a mean temperature of 7.9 C (46.3 F) and 433.0 mm (17.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Leiter 9N (United States, 119 km away), Thiokol Propulsion F S (United States, 657 km away) and Ellsworth 15 NNE (United States, 536 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Leiter 9N | United States | 119 km (74 mi) | 8.0 C (46.5 F) | 374.7 mm (14.8 in) | 1.12 |
| Thiokol Propulsion F S | United States | 657 km (408 mi) | 8.2 C (46.8 F) | 364.0 mm (14.3 in) | 1.12 |
| Ellsworth 15 NNE | United States | 536 km (333 mi) | 8.1 C (46.5 F) | 433.7 mm (17.1 in) | 1.14 |
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-17).