Alameda County, CA
An ordinary day in Alameda County, CA: was cooler than 35 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
- 77.8°F
- Warmest since 2024
- 36th warmest of 76
- Low
- 50.3°F
- Coldest since 2021
- 11th coldest of 76
No measurable precipitation in the county average of Alameda County, CA for 24 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 51 to 62.7°F
Every year as a table
Every 29 September high of the county average in Alameda County, CA since 1951: 77.8°F in 2026; the highest is 98.5°F, in 2010.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 77.8 | 50.3 |
| 2025 | 70.2 | 58.6 |
| 2024 | 83 | 55.6 |
| 2023 | 79.5 | 52.7 |
| 2022 | 79.9 | 55.2 |
| 2021 | 75.7 | 49.5 |
| 2020 | 94 | 66.3 |
| 2019 | 67.3 | 45.4 |
| 2018 | 73.5 | 51.1 |
| 2017 | 86.8 | 58.9 |
| 2016 | 84.7 | 57.1 |
| 2015 | 78.8 | 55.1 |
| 2014 | 73.6 | 54.7 |
| 2013 | 81.7 | 54.8 |
| 2012 | 77.6 | 55.4 |
| 2011 | 90.9 | 62.2 |
| 2010 | 98.5 | 70.2 |
| 2009 | 75.1 | 52.4 |
| 2008 | 83.7 | 57.6 |
| 2007 | 64.4 | 47.5 |
| 2006 | 75.4 | 53.9 |
| 2005 | 87.9 | 58.7 |
| 2004 | 71 | 51.9 |
| 2003 | 74.2 | 54.2 |
| 2002 | 68.6 | 49.6 |
| 2001 | 77.4 | 51.2 |
| 2000 | 69.2 | 51.3 |
| 1999 | 87.6 | 62.7 |
| 1998 | 70.7 | 53.3 |
| 1997 | 89.2 | 63.1 |
| 1996 | 80 | 55 |
| 1995 | 70.7 | 51.8 |
| 1994 | 74.6 | 55 |
| 1993 | 87.1 | 61.1 |
| 1992 | 88.7 | 60.7 |
| 1991 | 83.5 | 55.2 |
| 1990 | 83.4 | 58.2 |
| 1989 | 70.5 | 56.3 |
| 1988 | 85.8 | 55 |
| 1987 | 86 | 58 |
| 1986 | 73.9 | 49.3 |
| 1985 | 70.2 | 54.1 |
| 1984 | 87.9 | 59.8 |
| 1983 | 75.2 | 56.1 |
| 1982 | 73.3 | 51 |
| 1981 | 72.7 | 50.3 |
| 1980 | 80.5 | 53.7 |
| 1979 | 82.7 | 56.7 |
| 1978 | 88.5 | 58.7 |
| 1977 | 72.9 | 58.5 |
| 1976 | 64.7 | 58.3 |
| 1975 | 76.2 | 51.3 |
| 1974 | 75 | 50.4 |
| 1973 | 90.1 | 55.5 |
| 1972 | 77.5 | 56.4 |
| 1971 | 68.3 | 49.1 |
| 1970 | 90.8 | 57.4 |
| 1969 | 83.5 | 56.8 |
| 1968 | 80.9 | 53 |
| 1967 | 78.7 | 59.4 |
| 1966 | 93 | 62.7 |
| 1965 | 73.4 | 47.8 |
| 1964 | 70.8 | 50 |
| 1963 | 85.4 | 58.9 |
| 1962 | 72 | 54.6 |
| 1961 | 76 | 47.9 |
| 1960 | 74.8 | 51 |
| 1959 | 75.9 | 53.3 |
| 1958 | 90 | 57.9 |
| 1957 | 70.8 | 57.9 |
| 1956 | 87.3 | 53.7 |
| 1955 | 71.8 | 45.2 |
| 1954 | 73.6 | 50.7 |
| 1953 | 77.8 | 50.3 |
| 1952 | 86.4 | 55.1 |
| 1951 | 70.6 | 54.8 |
The month
September 2026 so far averaged 66.9°F in Alameda County, CA, the coldest 1 to 29 September in the county average since 2023, tied 14th coldest of 76 (with 1977) (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 72.6°F in Alameda County, CA, the warmest August in the county average since 2023, 6th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 77.8°F averaged over Alameda County, CA, the warmest 29 September in the county average since 2024, tied 36th warmest of 76 (with 1953) (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 50.3°F averaged over Alameda County, CA, the coldest 29 September night in the county average since 2021, tied 11th coldest of 76 (with 1981 and 1953) (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
San Jose, CA 19.4 mi, the nearest city with its own station