Weather on September 29
San Ramon, CA
55 Years of Data
Avg High
81°F
Avg Low
56°F
Warmest
2010
86°F avg
Coldest
2007
47°F avg
About This Date
September 29th in San Ramon, CA typically brings warm fall weather, with average highs around 81°F and lows near 56°F — a 25°F daily swing. Over 55 years of records, the warmest September 29th was in 2010 (86°F average), while the coldest was 2007 (47°F) — a 39°F range across recorded history. Rain or other precipitation has occurred on about 5% of September 29th dates historically, with the wettest September 29th recording 1.88" of rain. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for September 29th in San Ramon, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 55° | 70° | — | — |
| 2024 | 85° | 51° | 68° | — | — |
| 2023 | 77° | 55° | 66° | — | — |
| 2022 | 76° | 55° | 65° | — | — |
| 2021 | 71° | 49° | 60° | — | — |
| 2020 | 91° | 75° | 83° | — | — |
| 2019 | 62° | 40° | 51° | — | — |
| 2018 | 75° | 49° | 62° | — | — |
| 2017 | 84° | 62° | 73° | — | — |
| 2016 | 90° | 71° | 80° | — | — |
| 2015 | 84° | 55° | 70° | — | — |
| 2014 | 68° | 52° | 60° | — | — |
| 2013 | 70° | 53° | 61° | — | — |
| 2012 | 82° | 65° | 73° | — | — |
| 2011 | 89° | 72° | 80° | — | — |
| 2010warmest | 96° | 76° | 86° | — | — |
| 2009 | 82° | 47° | 64° | — | — |
| 2008 | 90° | 57° | 73° | — | — |
| 2007coldest | 57° | 37° | 47° | — | — |
| 2006 | 76° | 52° | 64° | — | — |
| 2005 | 96° | 61° | 78° | — | — |
| 2004 | 70° | 54° | 62° | — | — |
| 2003 | 80° | 55° | 68° | — | — |
| 2002 | 75° | 51° | 63° | — | — |
| 2001 | 87° | 51° | 69° | — | — |
| 2000 | 87° | 50° | 69° | — | — |
| 1999 | 96° | 65° | 80° | — | — |
| 1998 | 65° | 54° | 59° | — | — |
| 1997 | 94° | 66° | 80° | — | — |
| 1996 | 86° | 52° | 69° | — | — |
| 1995 | 77° | 51° | 64° | — | — |
| 1994 | 78° | 54° | 66° | — | — |
| 1993 | 91° | 62° | 77° | — | — |
| 1992 | 83° | 61° | 72° | — | — |
| 1991 | 97° | 59° | 78° | — | — |
| 1990 | 95° | 57° | 76° | — | — |
| 1989 | 69° | 51° | 60° | 1.57" | — |
| 1988 | 86° | 60° | 73° | — | — |
| 1987 | 90° | 68° | 79° | — | — |
| 1986 | 71° | 48° | 60° | — | — |
| 1985 | 68° | 44° | 56° | — | — |
| 1984 | 87° | 61° | 74° | — | — |
| 1983 | 76° | 52° | 64° | — | — |
| 1982 | 73° | 45° | 59° | — | — |
| 1981 | 70° | 49° | 59° | — | — |
| 1980 | 80° | 46° | 63° | — | — |
| 1979 | 85° | 62° | 73° | — | — |
| 1978 | 89° | 66° | 78° | — | — |
| 1977 | 68° | 51° | 60° | 0.25" | — |
| 1976 | 67° | 55° | 61° | 1.88" | — |
| 1975 | 87° | 63° | 75° | — | — |
| 1974 | 90° | 49° | 69° | — | — |
| 1973 | 92° | 57° | 74° | — | — |
| 1972 | 76° | 64° | 70° | — | — |
| 1971 | 69° | 46° | 58° | — | — |
55 years of data from LIVERMORE CALIFORNIA