Weather on May 31
San Ramon, CA
55 Years of Data
Avg High
77°F
Avg Low
52°F
Warmest
2001
85°F avg
Coldest
2011
49°F avg
About This Date
May 31st in San Ramon, CA typically brings pleasant spring weather, with average highs around 77°F and lows near 52°F — a 25°F daily swing. Over 55 years of records, the warmest May 31st was in 2001 (85°F average), while the coldest was 2011 (49°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 31st dates historically. The last decade has been 3.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.6°F cooler on this date compared to 20-30 years ago.
Planning for May 31st in San Ramon, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 75° | 84° | — | — |
| 2024 | 82° | 67° | 74° | — | — |
| 2023 | 62° | 44° | 53° | — | — |
| 2022 | 72° | 49° | 60° | — | — |
| 2021 | 86° | 69° | 78° | — | — |
| 2020 | 62° | 50° | 56° | — | — |
| 2019 | 73° | 45° | 59° | — | — |
| 2018 | 56° | 42° | 49° | — | — |
| 2017 | 68° | 43° | 55° | — | — |
| 2016 | 85° | 68° | 76° | — | — |
| 2015 | 79° | 60° | 69° | — | — |
| 2014 | 69° | 43° | 56° | — | — |
| 2013 | 74° | 56° | 65° | — | — |
| 2012 | 80° | 65° | 72° | — | — |
| 2011coldest | 56° | 42° | 49° | — | — |
| 2010 | 76° | 54° | 65° | — | — |
| 2009 | 70° | 46° | 58° | — | — |
| 2008 | 70° | 36° | 53° | — | — |
| 2007 | 69° | 38° | 53° | — | — |
| 2006 | 83° | 50° | 66° | — | — |
| 2005 | 85° | 53° | 69° | — | — |
| 2004 | 88° | 55° | 71° | — | — |
| 2003 | 81° | 50° | 65° | — | — |
| 2002 | 89° | 51° | 70° | — | — |
| 2001warmest | 101° | 69° | 85° | — | — |
| 2000 | 81° | 48° | 64° | — | — |
| 1999 | 66° | 49° | 57° | — | — |
| 1998 | 75° | 51° | 63° | — | — |
| 1997 | 86° | 61° | 73° | — | — |
| 1996 | 79° | 47° | 63° | — | — |
| 1995 | 87° | 57° | 72° | — | — |
| 1994 | 72° | 50° | 61° | — | — |
| 1993 | 70° | 56° | 63° | — | — |
| 1992 | 86° | 54° | 70° | — | — |
| 1991 | 80° | 52° | 66° | — | — |
| 1990 | 63° | 49° | 56° | — | — |
| 1989 | 75° | 54° | 64° | — | — |
| 1988 | 63° | 43° | 53° | — | — |
| 1987 | 69° | 48° | 59° | 0.08" | — |
| 1986 | 91° | 52° | 71° | — | — |
| 1985 | 70° | 44° | 57° | — | — |
| 1984 | 88° | 57° | 72° | — | — |
| 1983 | 67° | 46° | 56° | — | — |
| 1982 | 68° | 44° | 56° | — | — |
| 1981 | 72° | 56° | 64° | — | — |
| 1980 | 68° | 42° | 55° | — | — |
| 1979 | 85° | 58° | 71° | — | — |
| 1978 | 87° | 65° | 76° | — | — |
| 1977 | 88° | 60° | 74° | — | — |
| 1976 | 68° | 48° | 58° | — | — |
| 1975 | 93° | 64° | 79° | — | — |
| 1974 | 78° | 42° | 60° | — | — |
| 1973 | 79° | 50° | 64° | — | — |
| 1972 | 87° | 43° | 65° | — | — |
| 1971 | 64° | 38° | 51° | — | — |
55 years of data from LIVERMORE CALIFORNIA