Big Sheep Mountain Montana Threshold Days by Year (USR0000MBSM)
13 fixed thresholds counted per year at Big Sheep Mountain Montana (USR0000MBSM): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Big Sheep Mountain Montana Thresholds
- Big Sheep Mountain Montana: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 2021 with 63.
- Big Sheep Mountain Montana: days with a maximum temperature at or above 90 F (32.2 C) in 39 years, most in 1988 with 45.
- Big Sheep Mountain Montana: days with a maximum temperature at or below 0 C (32 F) in 39 years, most in 1996 with 89.
- Big Sheep Mountain Montana: nights with a minimum temperature at or below 0 C (32 F) in 39 years, most in 2002 with 191.
- 13 fixed thresholds have at least one qualifying day at Big Sheep Mountain Montana.
Days at or above 30 C (86 F)
39 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1986 | 19 | 36 |
| 1987 | 28 | 36 |
| 1988 | 58 | 36 |
| 1989 | 39 | 36 |
| 1990 | 44 | 36.1 |
| 1991 | 37 | 36.1 |
| 1992 | 20 | 36.1 |
| 1994 | 38 | 36.1 |
| 1995 | 34 | 36.1 |
| 1996 | 33 | 36.1 |
| 1997 | 36 | 36.1 |
| 1998 | 47 | 36.1 |
| 1999 | 36 | 36.1 |
| 2000 | 42 | 38.5 |
| 2001 | 43 | 38.5 |
| 2002 | 32 | 38.5 |
| 2003 | 47 | 38.5 |
| 2004 | 24 | 38.5 |
| 2005 | 32 | 38.5 |
| 2006 | 49 | 38.5 |
| 2007 | 50 | 38.5 |
| 2008 | 34 | 38.5 |
| 2009 | 32 | 38.5 |
| 2010 | 33 | 37.6 |
| 2011 | 44 | 37.6 |
| 2012 | 55 | 37.6 |
| 2013 | 38 | 37.6 |
| 2014 | 25 | 37.6 |
| 2015 | 44 | 37.6 |
| 2016 | 32 | 37.6 |
| 2017 | 50 | 37.6 |
| 2018 | 32 | 37.6 |
| 2019 | 23 | 37.6 |
| 2020 | 43 | 46.8 |
| 2021 | 63 | 46.8 |
| 2022 | 44 | 46.8 |
| 2023 | 36 | 46.8 |
| 2024 | 50 | 46.8 |
| 2026 | 45 | 46.8 |
| Year | First date | Last date |
|---|---|---|
| 1986 | 1986-05-30 | 1986-08-29 |
| 1987 | 1987-06-05 | 1987-09-23 |
| 1988 | 1988-05-16 | 1988-09-06 |
| 1989 | 1989-06-19 | 1989-09-30 |
| 1990 | 1990-06-10 | 1990-09-25 |
| 1991 | 1991-06-11 | 1991-09-07 |
| 1992 | 1992-05-06 | 1992-10-01 |
| 1994 | 1994-05-27 | 1994-09-09 |
| 1995 | 1995-06-14 | 1995-09-03 |
| 1996 | 1996-06-08 | 1996-09-04 |
| 1997 | 1997-06-22 | 1997-10-02 |
| 1998 | 1998-05-26 | 1998-09-17 |
| 1999 | 1999-05-28 | 1999-08-30 |
| 2000 | 2000-06-07 | 2000-09-17 |
| 2001 | 2001-05-12 | 2001-09-28 |
| 2002 | 2002-06-26 | 2002-09-16 |
| 2003 | 2003-06-30 | 2003-09-08 |
| 2004 | 2004-06-03 | 2004-09-18 |
| 2005 | 2005-06-22 | 2005-10-01 |
| 2006 | 2006-05-18 | 2006-09-13 |
| 2007 | 2007-06-20 | 2007-09-16 |
| 2008 | 2008-06-30 | 2008-09-20 |
| 2009 | 2009-06-20 | 2009-09-19 |
| 2010 | 2010-06-24 | 2010-09-28 |
| 2011 | 2011-06-29 | 2011-10-04 |
| 2012 | 2012-04-23 | 2012-09-10 |
| 2013 | 2013-05-13 | 2013-09-17 |
| 2014 | 2014-07-04 | 2014-09-25 |
| 2015 | 2015-06-08 | 2015-10-10 |
| 2016 | 2016-06-08 | 2016-09-02 |
| 2017 | 2017-05-06 | 2017-09-12 |
| 2018 | 2018-05-26 | 2018-09-10 |
| 2019 | 2019-06-03 | 2019-09-16 |
| 2020 | 2020-05-31 | 2020-09-24 |
| 2021 | 2021-05-18 | 2021-10-05 |
| 2022 | 2022-06-17 | 2022-09-07 |
| 2023 | 2023-06-06 | 2023-09-17 |
| 2024 | 2024-06-14 | 2024-09-29 |
| 2026 | 2026-05-13 | 2026-09-10 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 39 | 63 | 2021 | 45 |
| 35 C (95 F): Days | 38 | 22 | 1988 | 13 |
| 40 C (104 F): Days | 8 | 2 | 1988 | 2 |
| 90 F (32.2 C): Days | 39 | 45 | 1988 | 29 |
| 100 F (37.8 C): Days | 23 | 7 | 2012 | 4 |
| 110 F (43.3 C): Days | 1 | 0 | n/a | 1 |
| 0 C (32 F): Ice days (max | 39 | 89 | 1996 | 25 |
| 0 C (32 F): Frost days (min | 39 | 191 | 2002 | 100 |
| -10 C (14 F): Days with min | 39 | 83 | 1996 | 23 |
| -20 C (-4 F): Days with min | 39 | 42 | 1996 | 7 |
| -30 C (-22 F): Days with min | 23 | 8 | 1996 | 1 |
| 20 C (68 F): Tropical nights (min | 34 | 14 | 1987 | 15 |
| 25 C (77 F): Days with min | 4 | 3 | 1987 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1986.
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 (2026-10-17).