Granite County, MT
An ordinary day in Granite County, MT: was cooler than 44 of 75 earlier years in the county average (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 59.2°F
- Coldest since 2023
- 32nd coldest of 76
- Low
- 34.9°F
- Warmest since 2025
- 32nd warmest of 76
No measurable precipitation in the county average of Granite County, MT for 1 day to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 48.3 to 71.5°F
Every year as a table
Every 29 September low of the county average in Granite County, MT since 1951: 34.9°F in 2026; the lowest is 15.6°F, in 1985.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 59.2 | 34.9 |
| 2025 | 75 | 41.2 |
| 2024 | 76.6 | 40.4 |
| 2023 | 52.9 | 30.4 |
| 2022 | 77.3 | 44.4 |
| 2021 | 50.3 | 31.8 |
| 2020 | 62.2 | 30.4 |
| 2019 | 34.9 | 20.9 |
| 2018 | 55.8 | 32.1 |
| 2017 | 65.8 | 34.6 |
| 2016 | 73.8 | 43.5 |
| 2015 | 64.8 | 31.4 |
| 2014 | 47.6 | 41.1 |
| 2013 | 48.4 | 34.5 |
| 2012 | 71 | 39.7 |
| 2011 | 60.8 | 34.4 |
| 2010 | 76.5 | 44.9 |
| 2009 | 71.3 | 34.2 |
| 2008 | 65.9 | 35.5 |
| 2007 | 60.6 | 31.6 |
| 2006 | 68.1 | 39.1 |
| 2005 | 62.3 | 30.6 |
| 2004 | 66.6 | 36.5 |
| 2003 | 65.8 | 34.7 |
| 2002 | 57.3 | 29.9 |
| 2001 | 63 | 40.8 |
| 2000 | 68.2 | 36.9 |
| 1999 | 47.2 | 19.1 |
| 1998 | 64.3 | 35.7 |
| 1997 | 58.3 | 33 |
| 1996 | 68.2 | 39 |
| 1995 | 54.7 | 33.5 |
| 1994 | 73.5 | 42.3 |
| 1993 | 68.4 | 37.1 |
| 1992 | 67.7 | 31 |
| 1991 | 60.9 | 41.7 |
| 1990 | 64.5 | 35.2 |
| 1989 | 72 | 40.2 |
| 1988 | 50.6 | 28.6 |
| 1987 | 61.3 | 28.1 |
| 1986 | 40.2 | 33.2 |
| 1985 | 36.3 | 15.6 |
| 1984 | 49 | 21.7 |
| 1983 | 51.2 | 31.3 |
| 1982 | 39.8 | 33.6 |
| 1981 | 47.5 | 36.1 |
| 1980 | 65.3 | 35.5 |
| 1979 | 63.4 | 33.6 |
| 1978 | 50.3 | 35.9 |
| 1977 | 50.7 | 40.4 |
| 1976 | 67.4 | 36.4 |
| 1975 | 61.4 | 31.5 |
| 1974 | 59.6 | 28.7 |
| 1973 | 69.5 | 33.7 |
| 1972 | 46.6 | 24.1 |
| 1971 | 43.7 | 30.3 |
| 1970 | 68.8 | 32.9 |
| 1969 | 61.8 | 37.3 |
| 1968 | 62.2 | 33.5 |
| 1967 | 77.5 | 41.3 |
| 1966 | 61.5 | 41.2 |
| 1965 | 43.7 | 31.7 |
| 1964 | 61.5 | 35.1 |
| 1963 | 76.3 | 37.2 |
| 1962 | 50.3 | 36.1 |
| 1961 | 42.8 | 28.7 |
| 1960 | 62.8 | 27.9 |
| 1959 | 39.6 | 27.2 |
| 1958 | 55.7 | 32 |
| 1957 | 70.4 | 38.8 |
| 1956 | 50.9 | 33 |
| 1955 | 42.7 | 30.8 |
| 1954 | 37.8 | 30.2 |
| 1953 | 54.3 | 31.2 |
| 1952 | 66.9 | 33.4 |
| 1951 | 58 | 34 |
The month
September 2026 so far averaged 50.7°F in Granite County, MT, the warmest 1 to 29 September in the county average since 2025, tied 29th warmest of 76 (with 1957) (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 61°F in Granite County, MT, the warmest August in the county average since 2022, tied 14th warmest of 132 (with 2015) (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 59.2°F averaged over Granite County, MT, the coldest 29 September day in the county average since 2023, 32nd coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 34.9°F averaged over Granite County, MT, the warmest 29 September night in the county average since 2025, 32nd warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Deer Lodge, MT 30.0 mi, the nearest city with its own station