Custer County, ID
: September 2026 so far averaged 49.4°F in Custer County, ID, the coldest 1 to 29 September in the county average since 2016, tied 23rd coldest of 76 (with 2005) (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 60.3°F
- Coldest since 2023
- 29th coldest of 76
- Low
- 33.8°F
- Warmest since 2025
- 37th warmest of 76
No measurable precipitation in the county average of Custer County, ID for 6 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 49.6 to 73.3°F
Every year as a table
Every 29 September low of the county average in Custer County, ID since 1951: 33.8°F in 2026; the lowest is 13.9°F, in 1999.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 60.3 | 33.8 |
| 2025 | 71.2 | 39.5 |
| 2024 | 77.4 | 41.9 |
| 2023 | 56.9 | 29 |
| 2022 | 72.3 | 41.3 |
| 2021 | 51.7 | 26 |
| 2020 | 66.3 | 28 |
| 2019 | 45.1 | 28.9 |
| 2018 | 69.3 | 34.7 |
| 2017 | 61.7 | 31.6 |
| 2016 | 71.8 | 40.2 |
| 2015 | 68.4 | 35 |
| 2014 | 49.7 | 38.8 |
| 2013 | 46.9 | 31.8 |
| 2012 | 67.8 | 36.8 |
| 2011 | 73 | 40.7 |
| 2010 | 79.3 | 42.2 |
| 2009 | 72.1 | 37.3 |
| 2008 | 71.8 | 34.7 |
| 2007 | 54.7 | 33 |
| 2006 | 69.9 | 36.6 |
| 2005 | 65.9 | 29.7 |
| 2004 | 68.5 | 38.6 |
| 2003 | 75.6 | 40.4 |
| 2002 | 58.4 | 28 |
| 2001 | 66.2 | 40.5 |
| 2000 | 68.8 | 38.5 |
| 1999 | 49 | 13.9 |
| 1998 | 67.2 | 36.3 |
| 1997 | 63.4 | 28.5 |
| 1996 | 71.1 | 35.5 |
| 1995 | 59.3 | 32.2 |
| 1994 | 75.7 | 41.6 |
| 1993 | 71.9 | 36.4 |
| 1992 | 69.9 | 32 |
| 1991 | 56.1 | 42.6 |
| 1990 | 68 | 36.3 |
| 1989 | 72.7 | 39.4 |
| 1988 | 58 | 25.1 |
| 1987 | 65.4 | 27.3 |
| 1986 | 41.4 | 25.7 |
| 1985 | 44.8 | 17.9 |
| 1984 | 54.6 | 24.2 |
| 1983 | 53.7 | 35.9 |
| 1982 | 41.7 | 31.5 |
| 1981 | 50.7 | 36.8 |
| 1980 | 67.1 | 33.1 |
| 1979 | 67.4 | 35.1 |
| 1978 | 64.4 | 31 |
| 1977 | 63.2 | 36.6 |
| 1976 | 66.3 | 35.5 |
| 1975 | 65.7 | 34.2 |
| 1974 | 60.1 | 26.6 |
| 1973 | 70.8 | 32.6 |
| 1972 | 53.4 | 22.7 |
| 1971 | 39.5 | 31.5 |
| 1970 | 71.6 | 30.7 |
| 1969 | 65 | 35.3 |
| 1968 | 62.9 | 32 |
| 1967 | 75.6 | 39.9 |
| 1966 | 64.9 | 36 |
| 1965 | 51.2 | 29.6 |
| 1964 | 65.4 | 27.5 |
| 1963 | 75.2 | 36 |
| 1962 | 48.8 | 29 |
| 1961 | 45.8 | 27.4 |
| 1960 | 67 | 32.2 |
| 1959 | 41.5 | 23.2 |
| 1958 | 61.7 | 31.5 |
| 1957 | 71.2 | 37.7 |
| 1956 | 56.6 | 25.6 |
| 1955 | 46.9 | 22.6 |
| 1954 | 44.5 | 23.8 |
| 1953 | 54.2 | 25.2 |
| 1952 | 67.5 | 29.7 |
| 1951 | 60.3 | 36.9 |
The month
August 2026 averaged 62.8°F in Custer County, ID, the warmest August in the county average since 2022, 3rd warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
The month in words
- Tuesday 29 September 2026: a high of 60.3°F averaged over Custer County, ID, the coldest 29 September day in the county average since 2023, tied 29th coldest of 76 (with 1951) (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 33.8°F averaged over Custer County, ID, the warmest 29 September night in the county average since 2025, 37th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Challis, ID 17.3 mi, the nearest city with its own station