Weather on October 31
San Ramon, CA
55 Years of Data
Avg High
67°F
Avg Low
48°F
Warmest
2011
68°F avg
Coldest
1971
48°F avg
About This Date
October 31st in San Ramon, CA typically brings mild fall weather, with average highs around 67°F and lows near 48°F. Over 53 years of records, the warmest October 31st was in 2011 (68°F average), while the coldest was 1971 (48°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 17% of October 31st dates historically, with the wettest October 31st recording 0.94" 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 October 31st in San Ramon, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 56° | 64° | — | — |
| 2024 | 60° | 42° | 51° | 0.2" | — |
| 2023 | 68° | 48° | 58° | — | — |
| 2022 | 73° | 56° | 64° | — | — |
| 2021 | 57° | 46° | 52° | — | — |
| 2020 | 74° | 60° | 67° | — | — |
| 2019 | 63° | 45° | 54° | — | — |
| 2018 | 65° | 52° | 58° | — | — |
| 2017 | 54° | 43° | 48° | — | — |
| 2016 | 53° | 46° | 50° | 0.05" | — |
| 2015 | 77° | 57° | 67° | — | — |
| 2014 | 73° | 52° | 62° | — | — |
| 2013 | 62° | 44° | 53° | — | — |
| 2012 | 73° | 49° | 61° | — | — |
| 2011warmest | 75° | 61° | 68° | — | — |
| 2010 | 59° | 45° | 52° | 0.08" | — |
| 2009 | 70° | 54° | 62° | — | — |
| 2008 | 73° | 51° | 62° | 0.25" | — |
| 2007 | 59° | 39° | 49° | — | — |
| 2006 | 65° | 44° | 54° | — | — |
| 2005 | 77° | 47° | 62° | — | — |
| 2004 | 67° | 52° | 59° | — | — |
| 2003 | 58° | 43° | 50° | — | — |
| 2002 | 74° | 40° | 57° | — | — |
| 2001 | 69° | 49° | 59° | — | — |
| 2000 | 67° | 44° | 55° | — | — |
| 1999 | 79° | 50° | 64° | — | — |
| 1998 | 73° | 44° | 59° | — | — |
| 1997 | 77° | 57° | 67° | — | — |
| 1996 | 61° | 45° | 53° | — | — |
| 1995 | 64° | 54° | 59° | — | — |
| 1994 | 73° | 47° | 60° | — | — |
| 1993 | 72° | 51° | 61° | — | — |
| 1992 | 68° | 53° | 61° | — | — |
| 1991 | 65° | 48° | 56° | — | — |
| 1990 | 64° | 47° | 55° | — | — |
| 1989 | 69° | 46° | 58° | — | — |
| 1988 | 73° | 52° | 62° | — | — |
| 1986 | 62° | 48° | 55° | — | — |
| 1985 | 67° | 45° | 56° | — | — |
| 1984 | 61° | 43° | 52° | — | — |
| 1983 | 63° | 54° | 58° | 0.43" | — |
| 1982 | 55° | 46° | 51° | 0.25" | — |
| 1981 | 63° | 42° | 52° | — | — |
| 1979 | 68° | 43° | 55° | 0.05" | — |
| 1978 | 65° | 45° | 55° | — | — |
| 1977 | 64° | 42° | 53° | — | — |
| 1976 | 76° | 51° | 63° | — | — |
| 1975 | 68° | 46° | 57° | — | — |
| 1974 | 57° | 42° | 50° | 0.94" | — |
| 1973 | 73° | 58° | 65° | — | — |
| 1972 | 66° | 53° | 60° | — | — |
| 1971coldest | 58° | 38° | 48° | 0.28" | — |
53 years of data from LIVERMORE CALIFORNIA