Weather on September 22
San Ramon, CA
55 Years of Data
Avg High
81°F
Avg Low
57°F
Warmest
2003
87°F avg
Coldest
2013
49°F avg
About This Date
September 22nd in San Ramon, CA typically brings warm fall weather, with average highs around 81°F and lows near 57°F. Over 55 years of records, the warmest September 22nd was in 2003 (87°F average), while the coldest was 2013 (49°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 22nd dates historically, with the wettest September 22nd recording 2.69" of rain. The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
Planning for September 22nd in San Ramon, CA? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 63° | 72° | — | — |
| 2024 | 84° | 57° | 71° | — | — |
| 2023 | 70° | 49° | 59° | — | — |
| 2022 | 70° | 55° | 62° | — | — |
| 2021 | 88° | 68° | 78° | — | — |
| 2020 | 82° | 61° | 71° | — | — |
| 2019 | 79° | 63° | 71° | — | — |
| 2018 | 85° | 64° | 74° | — | — |
| 2017 | 64° | 43° | 53° | — | — |
| 2016 | 67° | 57° | 62° | — | — |
| 2015 | 88° | 59° | 73° | — | — |
| 2014 | 71° | 55° | 63° | — | — |
| 2013coldest | 52° | 47° | 49° | 2.69" | — |
| 2012 | 83° | 67° | 75° | — | — |
| 2011 | 91° | 73° | 82° | — | — |
| 2010 | 61° | 43° | 52° | — | — |
| 2009 | 90° | 73° | 81° | — | — |
| 2008 | 73° | 46° | 60° | — | — |
| 2007 | 75° | 43° | 59° | 0.2" | — |
| 2006 | 81° | 64° | 72° | — | — |
| 2005 | 90° | 55° | 72° | — | — |
| 2004 | 88° | 56° | 72° | — | — |
| 2003warmest | 106° | 69° | 87° | — | — |
| 2002 | 100° | 58° | 79° | — | — |
| 2001 | 90° | 56° | 73° | — | — |
| 2000 | 65° | 55° | 60° | — | — |
| 1999 | 84° | 60° | 72° | — | — |
| 1998 | 74° | 54° | 64° | — | — |
| 1997 | 91° | 54° | 72° | — | — |
| 1996 | 84° | 52° | 68° | — | — |
| 1995 | 79° | 54° | 66° | — | — |
| 1994 | 84° | 57° | 71° | — | — |
| 1993 | 76° | 49° | 62° | — | — |
| 1992 | 78° | 54° | 66° | — | — |
| 1991 | 86° | 62° | 74° | — | — |
| 1990 | 79° | 60° | 69° | — | — |
| 1989 | 80° | 64° | 72° | — | — |
| 1988 | 75° | 48° | 62° | — | — |
| 1987 | 100° | 71° | 86° | — | — |
| 1986 | 71° | 47° | 59° | — | — |
| 1985 | 85° | 61° | 73° | — | — |
| 1984 | 81° | 58° | 69° | — | — |
| 1983 | 84° | 57° | 71° | — | — |
| 1982 | 82° | 55° | 69° | — | — |
| 1981 | 84° | 61° | 72° | — | — |
| 1980 | 78° | 57° | 68° | — | — |
| 1979 | 88° | 60° | 74° | — | — |
| 1978 | 82° | 58° | 70° | — | — |
| 1977 | 79° | 58° | 68° | — | — |
| 1976 | 85° | 57° | 71° | — | — |
| 1975 | 90° | 63° | 76° | — | — |
| 1974 | 92° | 66° | 79° | — | — |
| 1973 | 70° | 52° | 61° | — | — |
| 1972 | 86° | 51° | 69° | — | — |
| 1971 | 83° | 51° | 67° | — | — |
55 years of data from LIVERMORE CALIFORNIA