Weather on September 9
San Ramon, CA
55 Years of Data
Avg High
82°F
Avg Low
59°F
Warmest
2022
91°F avg
Coldest
1986
49°F avg
About This Date
September 9th in San Ramon, CA typically brings warm fall weather, with average highs around 82°F and lows near 59°F. Over 55 years of records, the warmest September 9th was in 2022 (91°F average), while the coldest was 1986 (49°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 9th dates historically, with the wettest September 9th recording 1.14" of rain. The last decade has been 7.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.0°F warmer on this date compared to 20-30 years ago.
Planning for September 9th in San Ramon, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 56° | 63° | — | — |
| 2024 | 93° | 65° | 79° | — | — |
| 2023 | 83° | 65° | 74° | — | — |
| 2022warmest | 101° | 81° | 91° | — | — |
| 2021 | 92° | 69° | 80° | — | — |
| 2020 | 86° | 71° | 79° | — | — |
| 2019 | 72° | 52° | 62° | — | — |
| 2018 | 85° | 61° | 73° | — | — |
| 2017 | 78° | 59° | 69° | — | — |
| 2016 | 84° | 68° | 76° | — | — |
| 2015 | 93° | 75° | 84° | — | — |
| 2014 | 73° | 59° | 66° | — | — |
| 2013 | 92° | 70° | 81° | — | — |
| 2012 | 80° | 64° | 72° | — | — |
| 2011 | 84° | 72° | 78° | — | — |
| 2010 | 64° | 46° | 55° | — | — |
| 2009 | 83° | 59° | 71° | — | — |
| 2008 | 87° | 44° | 66° | — | — |
| 2007 | 84° | 53° | 69° | — | — |
| 2006 | 72° | 51° | 61° | — | — |
| 2005 | 69° | 52° | 60° | — | — |
| 2004 | 97° | 63° | 80° | — | — |
| 2003 | 69° | 53° | 61° | — | — |
| 2002 | 93° | 56° | 74° | — | — |
| 2001 | 72° | 54° | 63° | — | — |
| 2000 | 84° | 53° | 69° | — | — |
| 1999 | 74° | 55° | 64° | — | — |
| 1998 | 61° | 52° | 56° | — | — |
| 1997 | 81° | 59° | 70° | — | — |
| 1996 | 95° | 62° | 79° | — | — |
| 1995 | 75° | 53° | 64° | — | — |
| 1994 | 75° | 54° | 64° | — | — |
| 1993 | 93° | 57° | 75° | — | — |
| 1992 | 83° | 56° | 69° | — | — |
| 1991 | 68° | 52° | 60° | — | — |
| 1990 | 96° | 54° | 75° | — | — |
| 1989 | 80° | 56° | 68° | — | — |
| 1988 | 83° | 49° | 66° | — | — |
| 1987 | 88° | 63° | 75° | — | — |
| 1986coldest | 51° | 46° | 49° | — | — |
| 1985 | 63° | 44° | 53° | 1.14" | — |
| 1984 | 96° | 73° | 85° | — | — |
| 1983 | 74° | 55° | 64° | — | — |
| 1982 | 93° | 64° | 79° | — | — |
| 1981 | 90° | 66° | 78° | — | — |
| 1980 | 74° | 56° | 65° | — | — |
| 1979 | 81° | 60° | 70° | — | — |
| 1978 | 80° | 50° | 65° | — | — |
| 1977 | 101° | 71° | 86° | — | — |
| 1976 | 98° | 73° | 86° | — | — |
| 1975 | 80° | 62° | 71° | — | — |
| 1974 | 87° | 58° | 72° | — | — |
| 1973 | 88° | 58° | 73° | — | — |
| 1972 | 86° | 52° | 69° | — | — |
| 1971 | 96° | 66° | 81° | — | — |
55 years of data from LIVERMORE CALIFORNIA