Santa Clara County, CA
: September 2026 so far averaged 65.7°F in Santa Clara County, CA, the coldest 1 to 29 September in the county average since 2005, 11th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 76.6°F
- Coldest since 2025
- 35th coldest of 76
- Low
- 48.1°F
- Coldest since 2021
- 14th coldest of 76
No measurable precipitation in the county average of Santa Clara County, CA for 24 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 48.4 to 61.2°F
Every year as a table
Every 29 September high of the county average in Santa Clara County, CA since 1951: 76.6°F in 2026; the highest is 100°F, in 2010.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 76.6 | 48.1 |
| 2025 | 70.7 | 56.9 |
| 2024 | 82.8 | 55.9 |
| 2023 | 79.7 | 51.6 |
| 2022 | 81.7 | 54.1 |
| 2021 | 72.8 | 47.1 |
| 2020 | 93.9 | 64.4 |
| 2019 | 67.7 | 42.3 |
| 2018 | 76.6 | 49.4 |
| 2017 | 88 | 58.4 |
| 2016 | 86 | 58.2 |
| 2015 | 80.4 | 55.8 |
| 2014 | 71.3 | 52.2 |
| 2013 | 81.1 | 51.6 |
| 2012 | 79.5 | 56.7 |
| 2011 | 91.1 | 61.1 |
| 2010 | 100 | 70.8 |
| 2009 | 77.3 | 52.2 |
| 2008 | 84.1 | 58.9 |
| 2007 | 63.6 | 44.2 |
| 2006 | 77.4 | 55.5 |
| 2005 | 87 | 58.4 |
| 2004 | 70.6 | 48.6 |
| 2003 | 75.9 | 52.6 |
| 2002 | 66.5 | 46.8 |
| 2001 | 76.3 | 49.4 |
| 2000 | 69.7 | 48.9 |
| 1999 | 87 | 60 |
| 1998 | 69.8 | 50.8 |
| 1997 | 91.4 | 61.9 |
| 1996 | 82.7 | 54.8 |
| 1995 | 68.5 | 49.9 |
| 1994 | 73.7 | 52.6 |
| 1993 | 89.4 | 60.1 |
| 1992 | 89.8 | 59.8 |
| 1991 | 83.2 | 54.4 |
| 1990 | 81.6 | 55.8 |
| 1989 | 68.6 | 54.5 |
| 1988 | 85.5 | 54.7 |
| 1987 | 86.4 | 57.5 |
| 1986 | 72.1 | 47.3 |
| 1985 | 70.3 | 54.8 |
| 1984 | 88 | 58.2 |
| 1983 | 72.4 | 55.6 |
| 1982 | 71.7 | 47.6 |
| 1981 | 72.4 | 49.2 |
| 1980 | 79.4 | 52.8 |
| 1979 | 82 | 54.9 |
| 1978 | 88.3 | 57.5 |
| 1977 | 71.7 | 56.3 |
| 1976 | 62.3 | 57.3 |
| 1975 | 76.4 | 50.8 |
| 1974 | 74.5 | 48.5 |
| 1973 | 90.2 | 55.3 |
| 1972 | 78 | 56 |
| 1971 | 66.9 | 45.5 |
| 1970 | 91.3 | 56.4 |
| 1969 | 83.6 | 54.9 |
| 1968 | 80.5 | 50.7 |
| 1967 | 79.1 | 58.5 |
| 1966 | 91.4 | 60.5 |
| 1965 | 71.9 | 46 |
| 1964 | 71.3 | 46.9 |
| 1963 | 86.3 | 57.8 |
| 1962 | 71 | 52.2 |
| 1961 | 75.5 | 45.1 |
| 1960 | 74.4 | 48.8 |
| 1959 | 74.5 | 48.6 |
| 1958 | 89.3 | 56 |
| 1957 | 70.8 | 55.9 |
| 1956 | 86.6 | 53.3 |
| 1955 | 71.7 | 43.7 |
| 1954 | 72.5 | 48 |
| 1953 | 77.5 | 47.6 |
| 1952 | 85.5 | 54 |
| 1951 | 69.6 | 52.2 |
The month
August 2026 averaged 72.3°F in Santa Clara County, CA, the warmest August in the county average since 2022, tied 6th warmest of 132 (with 2015) (county average from NOAA's monthly county data, 1895 to 2026).
The month in words
- Tuesday 29 September 2026: a high of 76.6°F averaged over Santa Clara County, CA, the coldest 29 September day in the county average since 2025, tied 35th coldest of 76 (with 2018) (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 48.1°F averaged over Santa Clara County, CA, the coldest 29 September night in the county average since 2021, 14th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
San Jose, CA 16.0 mi, the nearest city with its own station