Petroleum County, MT
An ordinary day in Petroleum County, MT: was cooler than 40 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
- 70.8°F
- Coldest since 2023
- 36th coldest of 76
- Low
- 38.6°F
- Coldest since 2019
- 32nd coldest of 76
No measurable precipitation in the county average of Petroleum County, MT for 5 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 34.5 to 45.8°F
Every year as a table
Every 29 September high of the county average in Petroleum County, MT since 1951: 70.8°F in 2026; the highest is 90.4°F, in 2010.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 70.8 | 38.6 |
| 2025 | 81.9 | 48.3 |
| 2024 | 84.7 | 46.8 |
| 2023 | 66.7 | 42.7 |
| 2022 | 89.4 | 49.2 |
| 2021 | 77.4 | 45.1 |
| 2020 | 72.4 | 39.4 |
| 2019 | 40.3 | 35.5 |
| 2018 | 47.2 | 35.2 |
| 2017 | 74.6 | 43.1 |
| 2016 | 71.2 | 45.3 |
| 2015 | 70.6 | 38.3 |
| 2014 | 51.2 | 45.8 |
| 2013 | 67.8 | 44.2 |
| 2012 | 80.4 | 45.6 |
| 2011 | 72.5 | 36.4 |
| 2010 | 90.4 | 45.9 |
| 2009 | 68 | 33.5 |
| 2008 | 69.4 | 38 |
| 2007 | 81.3 | 45.4 |
| 2006 | 77.7 | 39.5 |
| 2005 | 68.5 | 33.5 |
| 2004 | 72.6 | 41.1 |
| 2003 | 65 | 37 |
| 2002 | 64.6 | 35.7 |
| 2001 | 78.9 | 55.6 |
| 2000 | 81 | 41.5 |
| 1999 | 56.4 | 31.3 |
| 1998 | 76.7 | 43.9 |
| 1997 | 74.1 | 44 |
| 1996 | 72.4 | 40.2 |
| 1995 | 73.8 | 43.8 |
| 1994 | 81.9 | 45.9 |
| 1993 | 69.8 | 40.8 |
| 1992 | 75.2 | 34.6 |
| 1991 | 78.4 | 44.9 |
| 1990 | 63.5 | 35.6 |
| 1989 | 84.9 | 47.6 |
| 1988 | 63.8 | 40 |
| 1987 | 69.8 | 36.8 |
| 1986 | 59.3 | 37.5 |
| 1985 | 42.9 | 22 |
| 1984 | 51.1 | 22.4 |
| 1983 | 42.2 | 34.6 |
| 1982 | 50.5 | 34.2 |
| 1981 | 70.9 | 41.2 |
| 1980 | 80.8 | 42.7 |
| 1979 | 82.7 | 40.7 |
| 1978 | 66.2 | 46.7 |
| 1977 | 56.4 | 43.3 |
| 1976 | 78.5 | 39 |
| 1975 | 78.5 | 41.2 |
| 1974 | 65.6 | 35.2 |
| 1973 | 79 | 43.1 |
| 1972 | 54.7 | 23.7 |
| 1971 | 63.8 | 36.2 |
| 1970 | 80.2 | 41.4 |
| 1969 | 75.6 | 42.5 |
| 1968 | 71.5 | 39.1 |
| 1967 | 88.2 | 50 |
| 1966 | 72.4 | 42.9 |
| 1965 | 51.2 | 31.7 |
| 1964 | 63.8 | 37.3 |
| 1963 | 79.5 | 41.8 |
| 1962 | 74.7 | 52.1 |
| 1961 | 63.5 | 31.8 |
| 1960 | 66.6 | 34.3 |
| 1959 | 44.4 | 24.4 |
| 1958 | 66.5 | 34.6 |
| 1957 | 81.1 | 48 |
| 1956 | 62.3 | 38 |
| 1955 | 63.3 | 38.4 |
| 1954 | 42.5 | 31.2 |
| 1953 | 78.9 | 39 |
| 1952 | 80 | 42.4 |
| 1951 | 75.2 | 32.5 |
The month
September 2026 so far averaged 60.4°F in Petroleum County, MT, the warmest 1 to 29 September in the county average since 2025, tied 26th warmest of 76 (with 2020) (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 71°F in Petroleum County, MT, the warmest August in the county average since 2023, 35th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 70.8°F averaged over Petroleum County, MT, the coldest 29 September day in the county average since 2023, 36th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 38.6°F averaged over Petroleum County, MT, the coldest 29 September night in the county average since 2019, 32nd coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Billings, MT 93.5 mi, the nearest city with its own station