Mendocino County, CA
: September 2026 so far averaged 62.7°F in Mendocino County, CA, the coldest 1 to 29 September in the county average since 2005, tied 5th coldest of 76 (with 1972) (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 79.3°F
- Warmest since 2024
- 35th warmest of 76
- Low
- 46.4°F
- Coldest since 2021
- 16th coldest of 76
No measurable precipitation in the county average of Mendocino County, CA for 4 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 45.1 to 53.8°F
Every year as a table
Every 29 September high of the county average in Mendocino County, CA since 1951: 79.3°F in 2026; the highest is 95.2°F, in 1966.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 79.3 | 46.4 |
| 2025 | 67.3 | 51 |
| 2024 | 85 | 53.1 |
| 2023 | 71.6 | 47.9 |
| 2022 | 72.1 | 49.2 |
| 2021 | 66.3 | 42.4 |
| 2020 | 92.8 | 60.7 |
| 2019 | 59.4 | 42.3 |
| 2018 | 78.2 | 49.5 |
| 2017 | 83.2 | 51.9 |
| 2016 | 84.2 | 53.5 |
| 2015 | 81.4 | 50.8 |
| 2014 | 71.3 | 51 |
| 2013 | 73.4 | 46.1 |
| 2012 | 85.7 | 54.1 |
| 2011 | 89.3 | 53.2 |
| 2010 | 94.9 | 57.5 |
| 2009 | 76.3 | 45.3 |
| 2008 | 90.1 | 53.8 |
| 2007 | 61.1 | 41.6 |
| 2006 | 79.8 | 50.2 |
| 2005 | 85.9 | 50.3 |
| 2004 | 73.4 | 50 |
| 2003 | 78 | 49 |
| 2002 | 70.4 | 44.8 |
| 2001 | 76.7 | 45.1 |
| 2000 | 76.1 | 48.3 |
| 1999 | 87.7 | 48.3 |
| 1998 | 70.3 | 47.4 |
| 1997 | 89.8 | 53.5 |
| 1996 | 83.1 | 53 |
| 1995 | 65.2 | 46 |
| 1994 | 72.3 | 48.5 |
| 1993 | 86.7 | 50.9 |
| 1992 | 89.7 | 53.7 |
| 1991 | 84.7 | 51.8 |
| 1990 | 85.1 | 56 |
| 1989 | 72.7 | 48.7 |
| 1988 | 86.4 | 49.9 |
| 1987 | 86.6 | 52.5 |
| 1986 | 69.7 | 44.2 |
| 1985 | 70.5 | 50.1 |
| 1984 | 82.1 | 48 |
| 1983 | 73.8 | 49.8 |
| 1982 | 68.4 | 48.2 |
| 1981 | 67.4 | 47.2 |
| 1980 | 82.9 | 50.8 |
| 1979 | 81.3 | 50.3 |
| 1978 | 81.2 | 51.4 |
| 1977 | 63.7 | 55.5 |
| 1976 | 70.7 | 53.9 |
| 1975 | 78.2 | 48.3 |
| 1974 | 79.3 | 46.5 |
| 1973 | 83.5 | 49.9 |
| 1972 | 75.4 | 52.2 |
| 1971 | 63.5 | 45.6 |
| 1970 | 83 | 48.1 |
| 1969 | 81.3 | 55.2 |
| 1968 | 79.5 | 49.1 |
| 1967 | 80.7 | 53.2 |
| 1966 | 95.2 | 55.7 |
| 1965 | 73.4 | 44.5 |
| 1964 | 73.1 | 43.9 |
| 1963 | 83.2 | 52.6 |
| 1962 | 63.5 | 49.1 |
| 1961 | 76.1 | 44.3 |
| 1960 | 78 | 50.5 |
| 1959 | 72.4 | 49.7 |
| 1958 | 89.6 | 50.9 |
| 1957 | 65 | 51.7 |
| 1956 | 82.3 | 49.4 |
| 1955 | 73.2 | 41.9 |
| 1954 | 73.3 | 44.7 |
| 1953 | 73.6 | 46.8 |
| 1952 | 87.5 | 51.1 |
| 1951 | 66.8 | 54.1 |
The month
August 2026 averaged 70.5°F in Mendocino County, CA, the warmest August in the county average since 2025, 11th 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 79.3°F averaged over Mendocino County, CA, the warmest 29 September in the county average since 2024, tied 35th warmest of 76 (with 1974) (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 46.4°F averaged over Mendocino County, CA, the coldest 29 September night in the county average since 2021, 16th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Ukiah, CA 24.3 mi, the nearest city with its own station