Powder River #2 Threshold Days by Year
18 fixed thresholds counted per year at Powder River #2 (USC00487376): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Powder River #2 Thresholds
- Powder River #2: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1992 with 15.
- Powder River #2: days with a maximum temperature at or above 30 C (86 F) in 26 years, most in 1981 with 84.
- Powder River #2: days with a maximum temperature at or above 90 F (32.2 C) in 26 years, most in 1981 with 67.
- Powder River #2: days with a maximum temperature at or below 0 C (32 F) in 26 years, most in 1993 with 59.
- 18 fixed thresholds have at least one qualifying day at Powder River #2.
Days at or above 30 C (86 F)
26 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1966 | 59 | 42.3 |
| 1967 | 47 | 42.3 |
| 1968 | 21 | 42.3 |
| 1970 | 50 | 53.1 |
| 1972 | 25 | 53.1 |
| 1973 | 54 | 53.1 |
| 1974 | 73 | 53.1 |
| 1975 | 66 | 53.1 |
| 1976 | 55 | 53.1 |
| 1978 | 49 | 53.1 |
| 1980 | 68 | 67.3 |
| 1981 | 84 | 67.3 |
| 1989 | 50 | 67.3 |
| 1990 | 47 | 40.2 |
| 1991 | 43 | 40.2 |
| 1992 | 29 | 40.2 |
| 1993 | 15 | 40.2 |
| 1994 | 60 | 40.2 |
| 1995 | 47 | 40.2 |
| 2000 | 72 | 58.9 |
| 2003 | 61 | 58.9 |
| 2004 | 34 | 58.9 |
| 2005 | 59 | 58.9 |
| 2006 | 63 | 58.9 |
| 2007 | 67 | 58.9 |
| 2008 | 56 | 58.9 |
| Year | First date | Last date |
|---|---|---|
| 1966 | 1966-05-06 | 1966-09-24 |
| 1967 | 1967-06-29 | 1967-09-22 |
| 1968 | 1968-06-03 | 1968-09-11 |
| 1970 | 1970-05-05 | 1970-09-11 |
| 1972 | 1972-05-17 | 1972-08-29 |
| 1973 | 1973-06-07 | 1973-09-07 |
| 1974 | 1974-06-13 | 1974-09-10 |
| 1975 | 1975-06-29 | 1975-09-17 |
| 1976 | 1976-05-28 | 1976-09-07 |
| 1978 | 1978-05-15 | 1978-09-08 |
| 1980 | 1980-05-23 | 1980-10-02 |
| 1981 | 1981-06-22 | 1981-09-26 |
| 1989 | 1989-06-15 | 1989-09-05 |
| 1990 | 1990-06-18 | 1990-09-14 |
| 1991 | 1991-06-18 | 1991-09-06 |
| 1992 | 1992-05-19 | 1992-10-02 |
| 1993 | 1993-06-15 | 1993-09-12 |
| 1994 | 1994-06-03 | 1994-09-09 |
| 1995 | 1995-07-06 | 1995-09-05 |
| 2000 | 2000-06-05 | 2000-09-18 |
| 2003 | 2003-05-28 | 2003-09-05 |
| 2004 | 2004-06-04 | 2004-09-11 |
| 2005 | 2005-05-20 | 2005-09-11 |
| 2006 | 2006-05-19 | 2006-09-13 |
| 2007 | 2007-06-11 | 2007-09-22 |
| 2008 | 2008-06-17 | 2008-08-30 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 26 | 84 | 1981 | 56 |
| 35 C (95 F): Days | 24 | 30 | 1981 | 3 |
| 40 C (104 F): Days | 1 | 2 | 1981 | 2 |
| 90 F (32.2 C): Days | 26 | 67 | 1981 | 35 |
| 100 F (37.8 C): Days | 12 | 14 | 1981 | 4 |
| 0 C (32 F): Ice days (max | 26 | 59 | 1993 | 45 |
| 0 C (32 F): Frost days (min | 26 | 223 | 1975 | 177 |
| -10 C (14 F): Days with min | 26 | 93 | 1975 | 66 |
| -20 C (-4 F): Days with min | 26 | 36 | 1978 | 12 |
| -30 C (-22 F): Days with min | 16 | 7 | 1990 | 2 |
| -40 C (-40 F): Days with min | 1 | 1 | 1990 | 1 |
| 20 C (68 F): Tropical nights (min | 4 | 3 | 1966 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 27 | 15 | 1992 | 12 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 18 | 5 | 1993 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 3 | 1 | 1967 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 20 | 8 | 1994 | 4 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 7 | 2 | 2004 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 2 | 1 | 2003 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.
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). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).