Moorcroft 3S Weather Records (USW00024088)
Record envelope, standing records and threshold days for Moorcroft 3S (USW00024088), Wyoming, United States, with 124 years of record.
Key Facts for Moorcroft 3S
- Moorcroft 3S (USW00024088) is a weather station in Wyoming, United States at 44.22 latitude and -104.93 longitude, 1,318 m (4,325 ft) above sea level.
- The station reports from 1903 to 2026, 124 years of record.
- 1,464 records set at Moorcroft 3S still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Moorcroft 3S set a daily record precipitation of 15.7 mm (0.6 in) on 21 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Wyoming, United States, 44.22 latitude, -104.93 longitude.
- Elevation: 1,318 m (4,325 ft).
- Period of record: 1903 to 2026, 124 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
17 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 22.2 C (72.0 F) | -38.3 C (-36.9 F) | 14.4 C (57.9 F) | -25.0 C (-13.0 F) |
| Feb | 20.0 C (68.0 F) | -41.7 C (-43.1 F) | 17.8 C (64.0 F) | -26.7 C (-16.1 F) |
| Mar | 28.3 C (82.9 F) | -32.2 C (-26.0 F) | 28.3 C (82.9 F) | -16.1 C (3.0 F) |
| Apr | 32.2 C (90.0 F) | -28.3 C (-18.9 F) | 28.3 C (82.9 F) | -6.1 C (21.0 F) |
| May | 35.6 C (96.1 F) | -13.3 C (8.1 F) | 32.8 C (91.0 F) | -8.3 C (17.1 F) |
| Jun | 41.7 C (107.1 F) | -5.0 C (23.0 F) | 36.7 C (98.1 F) | 2.2 C (36.0 F) |
| Jul | 42.2 C (108.0 F) | -1.7 C (28.9 F) | 40.0 C (104.0 F) | 11.7 C (53.1 F) |
| Aug | 42.2 C (108.0 F) | -3.3 C (26.1 F) | 36.7 C (98.1 F) | 6.7 C (44.1 F) |
| Sep | 38.3 C (100.9 F) | -8.3 C (17.1 F) | 25.6 C (78.1 F) | 7.8 C (46.0 F) |
| Oct | 35.6 C (96.1 F) | -27.2 C (-17.0 F) | 30.6 C (87.1 F) | 4.4 C (39.9 F) |
| Nov | 25.0 C (77.0 F) | -32.2 C (-26.0 F) | n/a | n/a |
| Dec | 18.9 C (66.0 F) | -43.3 C (-45.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1903 | 23 |
| 1904 | 16 |
| 1905 | 24 |
| 1906 | 19 |
| 1907 | 13 |
| 1908 | 19 |
| 1909 | 31 |
| 1910 | 26 |
| 1911 | 13 |
| 1912 | 14 |
| 1913 | 20 |
| 1914 | 23 |
| 1915 | 15 |
| 1916 | 19 |
| 1917 | 8 |
| 1918 | 10 |
| 1933 | 20 |
| 1934 | 24 |
| 1935 | 12 |
| 1936 | 35 |
| 1937 | 10 |
| 1948 | 11 |
| 1949 | 16 |
| 1950 | 27 |
| 1951 | 27 |
| 1952 | 22 |
| 1953 | 16 |
| 1954 | 28 |
| 1955 | 15 |
| 1956 | 11 |
| 1957 | 8 |
| 1958 | 11 |
| 1959 | 17 |
| 1960 | 23 |
| 1961 | 9 |
| 1962 | 24 |
| 1963 | 18 |
| 1964 | 17 |
| 1965 | 24 |
| 1966 | 19 |
| 1967 | 8 |
| 1968 | 18 |
| 1969 | 14 |
| 1970 | 9 |
| 1971 | 9 |
| 1972 | 18 |
| 1973 | 11 |
| 1974 | 8 |
| 1975 | 15 |
| 1976 | 7 |
| 1977 | 11 |
| 1978 | 4 |
| 1979 | 6 |
| 1980 | 10 |
| 1981 | 15 |
| 1982 | 6 |
| 1983 | 23 |
| 1984 | 6 |
| 1985 | 16 |
| 1986 | 10 |
| 1987 | 17 |
| 1988 | 32 |
| 1989 | 26 |
| 1990 | 25 |
| 1991 | 19 |
| 1992 | 22 |
| 1993 | 12 |
| 1994 | 6 |
| 1995 | 19 |
| 1996 | 19 |
| 1997 | 32 |
| 1998 | 15 |
| 1999 | 17 |
| 2000 | 15 |
| 2001 | 1 |
| 2002 | 16 |
| 2003 | 19 |
| 2004 | 18 |
| 2005 | 29 |
| 2006 | 13 |
| 2007 | 12 |
| 2008 | 15 |
| 2009 | 11 |
| 2010 | 7 |
| 2011 | 7 |
| 2012 | 8 |
| 2023 | 12 |
| 2024 | 21 |
| 2025 | 18 |
| 2026 | 20 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1978-05-07 | Record daily snowfall | Record daily snowfall 40.6 cm (16.0 in) |
| 1978-05-19 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
| 1983-12-25 | Record low maximum temperature | Record low maximum temperature -28.3 C (-18.9 F) |
| 1989-02-03 | Record low maximum temperature | Record low maximum temperature -29.4 C (-20.9 F) |
| 1989-12-22 | Record low minimum temperature | Record low minimum temperature -42.2 C (-44.0 F) |
| 1990-12-22 | Record low minimum temperature | Record low minimum temperature -43.3 C (-45.9 F) |
| 1993-08-18 | Record daily precipitation | Record daily precipitation 96.5 mm (3.8 in) |
| 2007-05-22 | Record daily precipitation | Record daily precipitation 106.7 mm (4.2 in) |
Wettest Day of Each Month
May: 106.7 mm (4.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 15.2 mm (0.6 in) | 15 January 1909 |
| Feb | 15.7 mm (0.6 in) | 15 February 1987 |
| Mar | 24.1 mm (0.9 in) | 26 March 1950 |
| Apr | 63.5 mm (2.5 in) | 26 April 1984 |
| May | 106.7 mm (4.2 in) | 22 May 2007 |
| Jun | 61.0 mm (2.4 in) | 9 June 1936 |
| Jul | 58.4 mm (2.3 in) | 25 July 1982 |
| Aug | 96.5 mm (3.8 in) | 18 August 1993 |
| Sep | 76.2 mm (3.0 in) | 25 September 1910 |
| Oct | 48.3 mm (1.9 in) | 4 October 1995 |
| Nov | 31.8 mm (1.3 in) | 5 November 2008 |
| Dec | 38.1 mm (1.5 in) | 23 December 1911 |
Period of Record Coverage
1903 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1903 | 283 | 78% | No |
| 1904 | 343 | 94% | Yes |
| 1905 | 345 | 95% | Yes |
| 1906 | 305 | 84% | No |
| 1907 | 181 | 50% | No |
| 1908 | 265 | 72% | No |
| 1909 | 284 | 78% | No |
| 1910 | 259 | 71% | No |
| 1911 | 140 | 38% | No |
| 1912 | 323 | 88% | No |
| 1913 | 338 | 93% | Yes |
| 1914 | 338 | 93% | Yes |
| 1915 | 363 | 99% | Yes |
| 1916 | 297 | 81% | No |
| 1917 | 219 | 60% | No |
| 1918 | 115 | 32% | No |
| 1933 | 182 | 50% | No |
| 1934 | 352 | 96% | Yes |
| 1935 | 360 | 99% | Yes |
| 1936 | 327 | 89% | No |
| 1937 | 228 | 62% | No |
| 1948 | 200 | 55% | No |
| 1949 | 359 | 98% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 288 | 79% | No |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 335 | 92% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 337 | 92% | Yes |
| 1974 | 363 | 99% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 302 | 83% | No |
| 1977 | 296 | 81% | No |
| 1978 | 103 | 28% | No |
| 1979 | 171 | 47% | No |
| 1980 | 152 | 42% | No |
| 1981 | 363 | 99% | Yes |
| 1982 | 268 | 73% | No |
| 1983 | 334 | 92% | Yes |
| 1984 | 271 | 74% | No |
| 1985 | 281 | 77% | No |
| 1986 | 332 | 91% | Yes |
| 1987 | 361 | 99% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 360 | 99% | Yes |
| 1990 | 360 | 99% | Yes |
| 1991 | 357 | 98% | Yes |
| 1992 | 340 | 93% | Yes |
| 1993 | 333 | 91% | Yes |
| 1994 | 356 | 98% | Yes |
| 1995 | 354 | 97% | Yes |
| 1996 | 322 | 88% | No |
| 1997 | 313 | 86% | No |
| 1998 | 296 | 81% | No |
| 1999 | 341 | 93% | Yes |
| 2000 | 342 | 93% | Yes |
| 2001 | 98 | 27% | No |
| 2002 | 225 | 62% | No |
| 2003 | 290 | 79% | No |
| 2004 | 314 | 86% | No |
| 2005 | 352 | 96% | Yes |
| 2006 | 269 | 74% | No |
| 2007 | 355 | 97% | Yes |
| 2008 | 211 | 58% | No |
| 2009 | 236 | 65% | No |
| 2010 | 274 | 75% | No |
| 2011 | 301 | 82% | No |
| 2012 | 89 | 24% | No |
| 2023 | 347 | 95% | Yes |
| 2024 | 364 | 99% | Yes |
| 2025 | 352 | 96% | Yes |
| 2026 | 252 | 69% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 21 September 2026 | Moorcroft 3S, US | daily rain (Provisional) | 15.7 mm (0.6 in) | 5.5 mm (0.22 in) | 24 years | 20 of 100 (Routine) |
| 2 August 2026 | Moorcroft 3S, US | daily high min | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 15 years | 17 of 100 (Routine) |
| 27 July 2026 | Moorcroft 3S, US | daily high max (Tie) | 39.4 C (102.9 F) | tie | 108 years | 10 of 100 (Routine) |
| 27 July 2026 | Moorcroft 3S, US | daily high min (Tie) | 20.0 C (68.0 F) | tie | 39 years | 5 of 100 (Routine) |
| 19 July 2026 | Moorcroft 3S, US | daily high min (Tie) | 20.6 C (69.1 F) | tie | 92 years | 9 of 100 (Routine) |
| 14 July 2026 | Moorcroft 3S, US | daily high max (Tie) | 38.9 C (102.0 F) | tie | 116 years | 10 of 100 (Routine) |
| 14 July 2026 | Moorcroft 3S, US | daily high min (Tie) | 21.1 C (70.0 F) | tie | 112 years | 10 of 100 (Routine) |
| 13 July 2026 | Moorcroft 3S, US | daily high max | 40.0 C (104.0 F) | 2.8 C (5.0 F) | 20 years | 21 of 100 (Routine) |
| 5 July 2026 | Moorcroft 3S, US | daily high min | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 77 years | 36 of 100 (Notable) |
| 7 June 2026 | Moorcroft 3S, US | daily high max | 36.7 C (98.1 F) | 1.1 C (2.0 F) | 21 years | 17 of 100 (Routine) |
| 27 May 2026 | Moorcroft 3S, US | daily high min | 16.7 C (62.1 F) | 1.7 C (3.1 F) | 112 years | 43 of 100 (Notable) |
| 19 May 2026 | Moorcroft 3S, US | daily low max | 6.1 C (43.0 F) | 1.1 C (2.0 F) | 111 years | 41 of 100 (Notable) |
| 14 May 2026 | Moorcroft 3S, US | daily high max | 32.8 C (91.0 F) | 0.6 C (1.1 F) | 89 years | 36 of 100 (Notable) |
| 14 May 2026 | Moorcroft 3S, US | daily high min (Tie) | 11.7 C (53.1 F) | tie | 71 years | 7 of 100 (Routine) |
| 24 April 2026 | Moorcroft 3S, US | daily snowfall | 2.5 cm (1.0 in) | 2.5 cm (1.0 in) | 123 years | 20 of 100 (Routine) |
| 17 April 2026 | Moorcroft 3S, US | daily snowfall (Tie) | 1.3 cm (0.5 in) | tie | 51 years | 6 of 100 (Routine) |
| 26 March 2026 | Moorcroft 3S, US | daily high max | 27.2 C (81.0 F) | 3.9 C (7.0 F) | 65 years | 34 of 100 (Routine) |
| 22 March 2026 | Moorcroft 3S, US | monthly high max | 28.3 C (82.9 F) | 1.6 C (2.9 F) | 116 years | 52 of 100 (Notable) |
| 20 March 2026 | Moorcroft 3S, US | monthly high max (Tie) | 26.7 C (80.1 F) | tie | 115 years | 12 of 100 (Routine) |
| 16 March 2026 | Moorcroft 3S, US | daily low max | -8.3 C (17.1 F) | 1.6 C (2.9 F) | 120 years | 42 of 100 (Notable) |
Climate Trend
46 complete years, 1905 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1905 | 6.4 C | -0.59 C |
| 1913 | 7.3 C | +0.30 C |
| 1914 | 8.4 C | +1.41 C |
| 1915 | 5.7 C | -1.21 C |
| 1934 | 8.5 C | +1.52 C |
| 1935 | 7.2 C | +0.20 C |
| 1949 | 6.1 C | -0.83 C |
| 1950 | 5.8 C | -1.16 C |
| 1951 | 5.2 C | -1.75 C |
| 1953 | 7.9 C | +0.99 C |
| 1954 | 8.0 C | +1.00 C |
| 1955 | 5.8 C | -1.11 C |
| 1956 | 7.2 C | +0.22 C |
| 1957 | 6.5 C | -0.45 C |
| 1958 | 7.3 C | +0.39 C |
| 1959 | 6.4 C | -0.51 C |
| 1960 | 7.1 C | +0.12 C |
| 1961 | 7.1 C | +0.18 C |
| 1962 | 7.0 C | +0.08 C |
| 1963 | 7.9 C | +0.97 C |
| 1964 | 6.3 C | -0.69 C |
| 1966 | 7.0 C | +0.01 C |
| 1967 | 6.7 C | -0.21 C |
| 1968 | 6.0 C | -0.95 C |
| 1969 | 6.6 C | -0.37 C |
| 1970 | 6.3 C | -0.64 C |
| 1971 | 6.0 C | -1.00 C |
| 1972 | 6.0 C | -0.95 C |
| 1974 | 7.2 C | +0.26 C |
| 1975 | 6.0 C | -0.91 C |
| 1981 | 8.1 C | +1.18 C |
| 1988 | 8.1 C | +1.13 C |
| 1989 | 6.0 C | -0.92 C |
| 1990 | 8.0 C | +1.05 C |
| 1991 | 7.8 C | +0.84 C |
| 1992 | 8.0 C | +1.03 C |
| 1993 | 5.4 C | -1.51 C |
| 1994 | 7.2 C | +0.24 C |
| 1995 | 6.5 C | -0.45 C |
| 1997 | 6.4 C | -0.54 C |
| 1999 | 8.1 C | +1.12 C |
| 2000 | 7.0 C | +0.07 C |
| 2005 | 6.4 C | -0.51 C |
| 2007 | 7.1 C | +0.18 C |
| 2024 | 8.7 C | +1.79 C |
| 2025 | 7.7 C | +0.77 C |
The fitted trend in annual mean temperature here over 1905 to 2025 is 0.05 C (-0.04 to 0.15) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.05 C (-0.04 to 0.15) per decade | 0.1 F (-0.1 to 0.3) per decade | 1905 to 2025 | 46 | Not clearly different from zero |
| Mean daily maximum | 0.10 C (-0.03 to 0.22) per decade | 0.2 F (-0.1 to 0.4) per decade | 1905 to 2025 | 46 | Not clearly different from zero |
| Mean daily minimum | 0.01 C (-0.09 to 0.12) per decade | 0.02 F (-0.16 to 0.21) per decade | 1905 to 2025 | 46 | Not clearly different from zero |
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
1903 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1911 | 37.8 C (100.0 F) | 90 |
| Coldest night (TNn) | -43.3 C (-45.9 F) | 1990 | -30.6 C (-23.1 F) | 90 |
| Wettest day (Rx1day) | 106.7 mm (4.2 in) | 2007 | 31.7 mm (1.2 in) | 90 |
| Wettest five days (Rx5day) | 147.1 mm (5.8 in) | 1978 | 45.7 mm (1.8 in) | 90 |
| Longest dry spell (CDD) | 92 days | 2009 | 33 days | 90 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1903 | 37.8 C (100.0 F) |
| 1904 | 35.6 C (96.1 F) |
| 1905 | 37.8 C (100.0 F) |
| 1906 | 37.2 C (99.0 F) |
| 1907 | 40.0 C (104.0 F) |
| 1908 | 37.2 C (99.0 F) |
| 1909 | 40.0 C (104.0 F) |
| 1910 | 40.6 C (105.1 F) |
| 1911 | 42.2 C (108.0 F) |
| 1912 | 36.7 C (98.1 F) |
| 1913 | 38.3 C (100.9 F) |
| 1914 | 37.8 C (100.0 F) |
| 1915 | 34.4 C (93.9 F) |
| 1916 | 38.3 C (100.9 F) |
| 1917 | 39.4 C (102.9 F) |
| 1918 | 36.7 C (98.1 F) |
| 1933 | 39.4 C (102.9 F) |
| 1934 | 38.3 C (100.9 F) |
| 1935 | 38.9 C (102.0 F) |
| 1936 | 41.1 C (106.0 F) |
| 1937 | 39.4 C (102.9 F) |
| 1948 | 38.9 C (102.0 F) |
| 1949 | 38.9 C (102.0 F) |
| 1950 | 36.1 C (97.0 F) |
| 1951 | 38.3 C (100.9 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 40.0 C (104.0 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 36.7 C (98.1 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 35.6 C (96.1 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 38.3 C (100.9 F) |
| 1961 | 38.9 C (102.0 F) |
| 1962 | 35.6 C (96.1 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 38.3 C (100.9 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 36.1 C (97.0 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 38.3 C (100.9 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 36.7 C (98.1 F) |
| 1973 | 38.9 C (102.0 F) |
| 1974 | 37.8 C (100.0 F) |
| 1975 | 37.2 C (99.0 F) |
| 1976 | 35.6 C (96.1 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 38.3 C (100.9 F) |
| 1979 | 36.7 C (98.1 F) |
| 1980 | 36.1 C (97.0 F) |
| 1981 | 41.1 C (106.0 F) |
| 1982 | 38.3 C (100.9 F) |
| 1983 | 39.4 C (102.9 F) |
| 1984 | 36.1 C (97.0 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 38.9 C (102.0 F) |
| 1987 | 39.4 C (102.9 F) |
| 1988 | 41.7 C (107.1 F) |
| 1989 | 42.2 C (108.0 F) |
| 1990 | 38.9 C (102.0 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 36.7 C (98.1 F) |
| 1993 | 36.1 C (97.0 F) |
| 1994 | 37.2 C (99.0 F) |
| 1995 | 40.6 C (105.1 F) |
| 1996 | 38.9 C (102.0 F) |
| 1997 | 37.8 C (100.0 F) |
| 1998 | 38.3 C (100.9 F) |
| 1999 | 36.1 C (97.0 F) |
| 2000 | 38.3 C (100.9 F) |
| 2001 | 35.6 C (96.1 F) |
| 2002 | 39.4 C (102.9 F) |
| 2003 | 39.4 C (102.9 F) |
| 2004 | 37.2 C (99.0 F) |
| 2005 | 41.7 C (107.1 F) |
| 2006 | 41.1 C (106.0 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 26.7 C (80.1 F) |
| 2009 | 35.0 C (95.0 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 40.0 C (104.0 F) |
| 2023 | 39.4 C (102.9 F) |
| 2024 | 40.0 C (104.0 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 40.0 C (104.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1903 | -31.1 C (-24.0 F) |
| 1904 | -29.4 C (-20.9 F) |
| 1905 | -40.0 C (-40.0 F) |
| 1906 | -27.2 C (-17.0 F) |
| 1907 | -31.1 C (-24.0 F) |
| 1908 | -27.8 C (-18.0 F) |
| 1909 | -34.4 C (-29.9 F) |
| 1910 | -36.1 C (-33.0 F) |
| 1911 | -28.9 C (-20.0 F) |
| 1912 | -30.0 C (-22.0 F) |
| 1913 | -27.8 C (-18.0 F) |
| 1914 | -33.3 C (-27.9 F) |
| 1915 | -36.1 C (-33.0 F) |
| 1916 | -36.1 C (-33.0 F) |
| 1917 | -36.7 C (-34.1 F) |
| 1918 | -35.0 C (-31.0 F) |
| 1933 | -30.0 C (-22.0 F) |
| 1934 | -28.9 C (-20.0 F) |
| 1935 | -31.1 C (-24.0 F) |
| 1936 | -41.1 C (-42.0 F) |
| 1937 | -25.6 C (-14.1 F) |
| 1948 | -26.1 C (-15.0 F) |
| 1949 | -38.3 C (-36.9 F) |
| 1950 | -37.2 C (-35.0 F) |
| 1951 | -33.9 C (-29.0 F) |
| 1952 | -31.1 C (-24.0 F) |
| 1953 | -22.8 C (-9.0 F) |
| 1954 | -30.0 C (-22.0 F) |
| 1955 | -27.2 C (-17.0 F) |
| 1956 | -28.9 C (-20.0 F) |
| 1957 | -32.8 C (-27.0 F) |
| 1958 | -28.3 C (-18.9 F) |
| 1959 | -33.3 C (-27.9 F) |
| 1960 | -31.1 C (-24.0 F) |
| 1961 | -27.8 C (-18.0 F) |
| 1962 | -33.9 C (-29.0 F) |
| 1963 | -37.8 C (-36.0 F) |
| 1964 | -37.2 C (-35.0 F) |
| 1965 | -27.2 C (-17.0 F) |
| 1966 | -29.4 C (-20.9 F) |
| 1967 | -29.4 C (-20.9 F) |
| 1968 | -31.7 C (-25.1 F) |
| 1969 | -28.3 C (-18.9 F) |
| 1970 | -32.8 C (-27.0 F) |
| 1971 | -33.3 C (-27.9 F) |
| 1972 | -34.4 C (-29.9 F) |
| 1973 | -33.9 C (-29.0 F) |
| 1974 | -33.9 C (-29.0 F) |
| 1975 | -29.4 C (-20.9 F) |
| 1976 | -28.9 C (-20.0 F) |
| 1977 | -33.3 C (-27.9 F) |
| 1978 | -28.9 C (-20.0 F) |
| 1979 | -8.9 C (16.0 F) |
| 1980 | -22.8 C (-9.0 F) |
| 1981 | -31.7 C (-25.1 F) |
| 1982 | -35.0 C (-31.0 F) |
| 1983 | -39.4 C (-38.9 F) |
| 1984 | -31.1 C (-24.0 F) |
| 1985 | -30.6 C (-23.1 F) |
| 1986 | -30.6 C (-23.1 F) |
| 1987 | -22.8 C (-9.0 F) |
| 1988 | -29.4 C (-20.9 F) |
| 1989 | -42.2 C (-44.0 F) |
| 1990 | -43.3 C (-45.9 F) |
| 1991 | -30.0 C (-22.0 F) |
| 1992 | -28.3 C (-18.9 F) |
| 1993 | -35.0 C (-31.0 F) |
| 1994 | -35.0 C (-31.0 F) |
| 1995 | -29.4 C (-20.9 F) |
| 1996 | -41.7 C (-43.1 F) |
| 1997 | -37.2 C (-35.0 F) |
| 1998 | -33.3 C (-27.9 F) |
| 1999 | -18.9 C (-2.0 F) |
| 2000 | -27.8 C (-18.0 F) |
| 2001 | -18.9 C (-2.0 F) |
| 2002 | -21.1 C (-6.0 F) |
| 2003 | -28.9 C (-20.0 F) |
| 2004 | -28.9 C (-20.0 F) |
| 2005 | -27.2 C (-17.0 F) |
| 2006 | -28.9 C (-20.0 F) |
| 2007 | -27.8 C (-18.0 F) |
| 2008 | -30.6 C (-23.1 F) |
| 2009 | -28.9 C (-20.0 F) |
| 2010 | -27.2 C (-17.0 F) |
| 2011 | -32.2 C (-26.0 F) |
| 2012 | -17.2 C (1.0 F) |
| 2023 | -33.3 C (-27.9 F) |
| 2024 | -37.8 C (-36.0 F) |
| 2025 | -32.2 C (-26.0 F) |
| 2026 | -26.7 C (-16.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1903 | 40.6 mm (1.6 in) |
| 1904 | 25.4 mm (1.0 in) |
| 1905 | 48.0 mm (1.9 in) |
| 1906 | 27.9 mm (1.1 in) |
| 1907 | 20.6 mm (0.8 in) |
| 1908 | 38.1 mm (1.5 in) |
| 1909 | 23.4 mm (0.9 in) |
| 1910 | 76.2 mm (3.0 in) |
| 1911 | 38.1 mm (1.5 in) |
| 1912 | 44.5 mm (1.8 in) |
| 1913 | 33.0 mm (1.3 in) |
| 1914 | 43.2 mm (1.7 in) |
| 1915 | 49.0 mm (1.9 in) |
| 1916 | 39.6 mm (1.6 in) |
| 1917 | 25.4 mm (1.0 in) |
| 1918 | 38.1 mm (1.5 in) |
| 1933 | 26.4 mm (1.0 in) |
| 1934 | 24.9 mm (1.0 in) |
| 1935 | 25.1 mm (1.0 in) |
| 1936 | 61.0 mm (2.4 in) |
| 1937 | 50.8 mm (2.0 in) |
| 1948 | 32.3 mm (1.3 in) |
| 1949 | 18.8 mm (0.7 in) |
| 1950 | 26.2 mm (1.0 in) |
| 1951 | 57.9 mm (2.3 in) |
| 1952 | 24.6 mm (1.0 in) |
| 1953 | 37.8 mm (1.5 in) |
| 1954 | 34.5 mm (1.4 in) |
| 1955 | 31.5 mm (1.2 in) |
| 1956 | 21.6 mm (0.9 in) |
| 1957 | 24.9 mm (1.0 in) |
| 1958 | 17.5 mm (0.7 in) |
| 1959 | 25.1 mm (1.0 in) |
| 1960 | 55.9 mm (2.2 in) |
| 1961 | 17.0 mm (0.7 in) |
| 1962 | 43.2 mm (1.7 in) |
| 1963 | 27.4 mm (1.1 in) |
| 1964 | 59.2 mm (2.3 in) |
| 1965 | 20.6 mm (0.8 in) |
| 1966 | 27.9 mm (1.1 in) |
| 1967 | 23.1 mm (0.9 in) |
| 1968 | 32.0 mm (1.3 in) |
| 1969 | 20.6 mm (0.8 in) |
| 1970 | 16.3 mm (0.6 in) |
| 1971 | 28.4 mm (1.1 in) |
| 1972 | 24.1 mm (0.9 in) |
| 1973 | 34.5 mm (1.4 in) |
| 1974 | 36.6 mm (1.4 in) |
| 1975 | 19.6 mm (0.8 in) |
| 1976 | 44.5 mm (1.8 in) |
| 1977 | 41.4 mm (1.6 in) |
| 1978 | 64.3 mm (2.5 in) |
| 1979 | 24.9 mm (1.0 in) |
| 1980 | 25.4 mm (1.0 in) |
| 1981 | 35.1 mm (1.4 in) |
| 1982 | 58.4 mm (2.3 in) |
| 1983 | 23.9 mm (0.9 in) |
| 1984 | 63.5 mm (2.5 in) |
| 1985 | 14.7 mm (0.6 in) |
| 1986 | 28.4 mm (1.1 in) |
| 1987 | 36.8 mm (1.4 in) |
| 1988 | 45.7 mm (1.8 in) |
| 1989 | 47.0 mm (1.9 in) |
| 1990 | 25.9 mm (1.0 in) |
| 1991 | 21.1 mm (0.8 in) |
| 1992 | 43.2 mm (1.7 in) |
| 1993 | 96.5 mm (3.8 in) |
| 1994 | 40.6 mm (1.6 in) |
| 1995 | 48.3 mm (1.9 in) |
| 1996 | 48.3 mm (1.9 in) |
| 1997 | 27.2 mm (1.1 in) |
| 1998 | 40.6 mm (1.6 in) |
| 1999 | 30.2 mm (1.2 in) |
| 2000 | 26.7 mm (1.1 in) |
| 2001 | 6.9 mm (0.27 in) |
| 2002 | 24.1 mm (0.9 in) |
| 2003 | 45.7 mm (1.8 in) |
| 2004 | 20.3 mm (0.8 in) |
| 2005 | 29.5 mm (1.2 in) |
| 2006 | 20.3 mm (0.8 in) |
| 2007 | 106.7 mm (4.2 in) |
| 2008 | 31.8 mm (1.3 in) |
| 2009 | 18.8 mm (0.7 in) |
| 2010 | 35.6 mm (1.4 in) |
| 2011 | 39.4 mm (1.6 in) |
| 2012 | 15.2 mm (0.6 in) |
| 2023 | 31.5 mm (1.2 in) |
| 2024 | 40.4 mm (1.6 in) |
| 2025 | 52.8 mm (2.1 in) |
| 2026 | 15.7 mm (0.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1903 | 50.0 mm (2.0 in) |
| 1904 | 49.3 mm (1.9 in) |
| 1905 | 64.3 mm (2.5 in) |
| 1906 | 25.4 mm (1.0 in) |
| 1907 | 25.4 mm (1.0 in) |
| 1908 | 61.0 mm (2.4 in) |
| 1909 | 38.0 mm (1.5 in) |
| 1910 | 81.3 mm (3.2 in) |
| 1911 | 30.8 mm (1.2 in) |
| 1912 | 54.7 mm (2.2 in) |
| 1913 | 35.8 mm (1.4 in) |
| 1914 | 52.1 mm (2.1 in) |
| 1915 | 86.1 mm (3.4 in) |
| 1916 | 39.6 mm (1.6 in) |
| 1917 | 58.4 mm (2.3 in) |
| 1918 | 40.6 mm (1.6 in) |
| 1933 | 27.2 mm (1.1 in) |
| 1934 | 40.4 mm (1.6 in) |
| 1935 | 33.0 mm (1.3 in) |
| 1936 | 75.5 mm (3.0 in) |
| 1937 | 55.9 mm (2.2 in) |
| 1948 | 51.4 mm (2.0 in) |
| 1949 | 26.4 mm (1.0 in) |
| 1950 | 29.2 mm (1.1 in) |
| 1951 | 87.3 mm (3.4 in) |
| 1952 | 39.4 mm (1.6 in) |
| 1953 | 59.5 mm (2.3 in) |
| 1954 | 41.9 mm (1.6 in) |
| 1955 | 56.4 mm (2.2 in) |
| 1956 | 45.6 mm (1.8 in) |
| 1957 | 31.2 mm (1.2 in) |
| 1958 | 38.4 mm (1.5 in) |
| 1959 | 45.7 mm (1.8 in) |
| 1960 | 57.9 mm (2.3 in) |
| 1961 | 21.6 mm (0.9 in) |
| 1962 | 98.3 mm (3.9 in) |
| 1963 | 52.8 mm (2.1 in) |
| 1964 | 82.6 mm (3.3 in) |
| 1965 | 26.5 mm (1.0 in) |
| 1966 | 33.6 mm (1.3 in) |
| 1967 | 69.3 mm (2.7 in) |
| 1968 | 39.6 mm (1.6 in) |
| 1969 | 39.9 mm (1.6 in) |
| 1970 | 35.1 mm (1.4 in) |
| 1971 | 47.0 mm (1.9 in) |
| 1972 | 54.6 mm (2.1 in) |
| 1973 | 53.3 mm (2.1 in) |
| 1974 | 39.2 mm (1.5 in) |
| 1975 | 34.8 mm (1.4 in) |
| 1976 | 87.9 mm (3.5 in) |
| 1977 | 55.3 mm (2.2 in) |
| 1978 | 147.1 mm (5.8 in) |
| 1979 | 42.2 mm (1.7 in) |
| 1980 | 45.2 mm (1.8 in) |
| 1981 | 47.2 mm (1.9 in) |
| 1982 | 84.5 mm (3.3 in) |
| 1983 | 45.5 mm (1.8 in) |
| 1984 | 94.6 mm (3.7 in) |
| 1985 | 37.3 mm (1.5 in) |
| 1986 | 34.8 mm (1.4 in) |
| 1987 | 90.3 mm (3.6 in) |
| 1988 | 48.0 mm (1.9 in) |
| 1989 | 52.1 mm (2.1 in) |
| 1990 | 46.8 mm (1.8 in) |
| 1991 | 32.7 mm (1.3 in) |
| 1992 | 56.6 mm (2.2 in) |
| 1993 | 96.5 mm (3.8 in) |
| 1994 | 99.0 mm (3.9 in) |
| 1995 | 50.8 mm (2.0 in) |
| 1996 | 57.1 mm (2.2 in) |
| 1997 | 28.5 mm (1.1 in) |
| 1998 | 44.5 mm (1.8 in) |
| 1999 | 56.2 mm (2.2 in) |
| 2000 | 34.3 mm (1.4 in) |
| 2001 | 7.6 mm (0.30 in) |
| 2002 | 35.8 mm (1.4 in) |
| 2003 | 73.7 mm (2.9 in) |
| 2004 | 26.9 mm (1.1 in) |
| 2005 | 41.2 mm (1.6 in) |
| 2006 | 26.2 mm (1.0 in) |
| 2007 | 106.7 mm (4.2 in) |
| 2008 | 43.1 mm (1.7 in) |
| 2009 | 29.6 mm (1.2 in) |
| 2010 | 45.8 mm (1.8 in) |
| 2011 | 85.6 mm (3.4 in) |
| 2012 | 20.3 mm (0.8 in) |
| 2023 | 35.3 mm (1.4 in) |
| 2024 | 40.4 mm (1.6 in) |
| 2025 | 57.7 mm (2.3 in) |
| 2026 | 19.8 mm (0.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1903 | 28 days |
| 1904 | 53 days |
| 1905 | 18 days |
| 1906 | 35 days |
| 1907 | 55 days |
| 1908 | 23 days |
| 1909 | 23 days |
| 1910 | 29 days |
| 1911 | 16 days |
| 1912 | 20 days |
| 1913 | 39 days |
| 1914 | 44 days |
| 1915 | 26 days |
| 1916 | 24 days |
| 1917 | 19 days |
| 1918 | 23 days |
| 1933 | 39 days |
| 1934 | 55 days |
| 1935 | 37 days |
| 1936 | 25 days |
| 1937 | 33 days |
| 1948 | 36 days |
| 1949 | 29 days |
| 1950 | 32 days |
| 1951 | 38 days |
| 1952 | 34 days |
| 1953 | 35 days |
| 1954 | 31 days |
| 1955 | 20 days |
| 1956 | 28 days |
| 1957 | 38 days |
| 1958 | 44 days |
| 1959 | 34 days |
| 1960 | 35 days |
| 1961 | 33 days |
| 1962 | 44 days |
| 1963 | 28 days |
| 1964 | 40 days |
| 1965 | 32 days |
| 1966 | 34 days |
| 1967 | 33 days |
| 1968 | 45 days |
| 1969 | 45 days |
| 1970 | 23 days |
| 1971 | 26 days |
| 1972 | 34 days |
| 1973 | 31 days |
| 1974 | 24 days |
| 1975 | 53 days |
| 1976 | 49 days |
| 1977 | 24 days |
| 1978 | 23 days |
| 1979 | 26 days |
| 1980 | 30 days |
| 1981 | 32 days |
| 1982 | 24 days |
| 1983 | 33 days |
| 1984 | 27 days |
| 1985 | 42 days |
| 1986 | 24 days |
| 1987 | 31 days |
| 1988 | 33 days |
| 1989 | 23 days |
| 1990 | 43 days |
| 1991 | 33 days |
| 1992 | 28 days |
| 1993 | 23 days |
| 1994 | 20 days |
| 1995 | 58 days |
| 1996 | 27 days |
| 1997 | 18 days |
| 1998 | 51 days |
| 1999 | 31 days |
| 2000 | 40 days |
| 2001 | 33 days |
| 2002 | 22 days |
| 2003 | 40 days |
| 2004 | 51 days |
| 2005 | 35 days |
| 2006 | 47 days |
| 2007 | 35 days |
| 2008 | 27 days |
| 2009 | 92 days |
| 2010 | 65 days |
| 2011 | 40 days |
| 2012 | 16 days |
| 2023 | 28 days |
| 2024 | 34 days |
| 2025 | 22 days |
| 2026 | 23 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
46 years with a frostAcross 46 years with a frost, the median last spring frost at Moorcroft 3S falls on 21 May and the median first autumn frost on 17 September, which leaves a median of 120 days between them.
Fitted over all years, the growing season changes by -0.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1960 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 21 May | n/a | 21 May | n/a | 0.0 days per decade |
| First autumn frost | 17 September | n/a | 19 September | n/a | -0.6 days per decade |
| Growing days | 120 days | n/a | 122 days | n/a | -0.6 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
50 years, 1912 to 2025A day with at least 31.1 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 108.9 mm (4.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 31.1 mm (1.2 in) | |
| 5 years | 45.1 mm (1.8 in) | |
| 10 years | 56.7 mm (2.2 in) | |
| 25 years | 74.4 mm (2.9 in) | |
| 50 years | 90.3 mm (3.6 in) | |
| 100 years | 108.9 mm (4.3 in) | Longer than the 50 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, 50 years of values from 1912 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: 106.7 mm (4.2 in) in 2007; 96.5 mm (3.8 in) in 1993; 61.0 mm (2.4 in) in 1936.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Moorcroft 3S, at 1994. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1994 ran 0.4 C (0.8 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1994 | -0.4 | -0.8 | 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.
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 (2026-10-14).