Boise County, ID
: September 2026 so far averaged 54.9°F in Boise County, ID, the coldest 1 to 29 September in the county average since 2016, tied 22nd coldest of 76 (with 1988 and 1951) (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- Tuesday 29 September 2026: a high of 66.1°F averaged over Boise County, ID, the coldest 29 September day in the county average since 2023, 30th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 38.9°F averaged over Boise County, ID, the coldest 29 September night in the county average since 2023, 37th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- No measurable precipitation in the county average of Boise County, ID for 10 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
The month
- August 2026 averaged 68.9°F in Boise County, ID, the warmest August in the county average since 2022, 4th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
- Days of the month without a value
- 0
Every year on this date
- Above the normal range
- In it
- Below it
- Normal range
- This year and the extreme
Every year as a table
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 66.1 | 38.9 |
| 2025 | 77 | 44.4 |
| 2024 | 82.6 | 45.7 |
| 2023 | 60.3 | 33.6 |
| 2022 | 78.2 | 47.3 |
| 2021 | 52 | 32.1 |
| 2020 | 70.2 | 35.7 |
| 2019 | 44 | 32.1 |
| 2018 | 74.5 | 41.8 |
| 2017 | 68.3 | 38.5 |
| 2016 | 80.4 | 46.9 |
| 2015 | 74.4 | 41.4 |
| 2014 | 58.6 | 43.4 |
| 2013 | 54.6 | 37.6 |
| 2012 | 72.9 | 42.2 |
| 2011 | 73.1 | 42.9 |
| 2010 | 83.2 | 46.9 |
| 2009 | 75.4 | 41.7 |
| 2008 | 76 | 39.1 |
| 2007 | 61 | 33.4 |
| 2006 | 74.9 | 42.4 |
| 2005 | 69.9 | 34.9 |
| 2004 | 75.8 | 44.7 |
| 2003 | 81.5 | 47.1 |
| 2002 | 63.6 | 33.6 |
| 2001 | 67.5 | 42.9 |
| 2000 | 75.1 | 43.9 |
| 1999 | 56.2 | 22.7 |
| 1998 | 73.3 | 42.8 |
| 1997 | 69.2 | 34.2 |
| 1996 | 76.1 | 40.2 |
| 1995 | 60.1 | 37.3 |
| 1994 | 81.5 | 45 |
| 1993 | 76.9 | 40.5 |
| 1992 | 77.3 | 37.9 |
| 1991 | 59.7 | 48.3 |
| 1990 | 75.6 | 43.9 |
| 1989 | 79.4 | 46.3 |
| 1988 | 62.4 | 30.7 |
| 1987 | 70.2 | 33.7 |
| 1986 | 46.9 | 32.7 |
| 1985 | 52.1 | 25.8 |
| 1984 | 60 | 30 |
| 1983 | 59.2 | 33.8 |
| 1982 | 47.6 | 37 |
| 1981 | 57.2 | 39.9 |
| 1980 | 70.1 | 39.1 |
| 1979 | 72.1 | 40.7 |
| 1978 | 69 | 36.8 |
| 1977 | 64.2 | 44.8 |
| 1976 | 73.2 | 42.5 |
| 1975 | 70.2 | 37.1 |
| 1974 | 68.2 | 30.6 |
| 1973 | 74.5 | 41.1 |
| 1972 | 55.9 | 28.7 |
| 1971 | 45.6 | 33.2 |
| 1970 | 75.7 | 39.3 |
| 1969 | 72.4 | 42.9 |
| 1968 | 67.1 | 39.3 |
| 1967 | 82 | 46.6 |
| 1966 | 72.3 | 39.8 |
| 1965 | 56.7 | 32.1 |
| 1964 | 70 | 34.3 |
| 1963 | 81.1 | 44.8 |
| 1962 | 51.5 | 32.6 |
| 1961 | 55.1 | 32 |
| 1960 | 73.3 | 41.3 |
| 1959 | 46.1 | 31.9 |
| 1958 | 68.5 | 38.8 |
| 1957 | 75 | 45.5 |
| 1956 | 61.6 | 30.6 |
| 1955 | 52.8 | 28.8 |
| 1954 | 50.4 | 27.1 |
| 1953 | 59.8 | 30.7 |
| 1952 | 73.3 | 36.2 |
| 1951 | 66 | 42.4 |
Nearby
Boise, ID 39.1 mi, the nearest city with its own station