Weather on May 27
San Ramon, CA
55 Years of Data
Avg High
72°F
Avg Low
49°F
Warmest
2020
81°F avg
Coldest
1987
46°F avg
About This Date
May 27th in San Ramon, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 49°F. Over 55 years of records, the warmest May 27th was in 2020 (81°F average), while the coldest was 1987 (46°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 27th dates historically. The last decade has been 4.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.7°F cooler on this date compared to 20-30 years ago.
Planning for May 27th in San Ramon, CA? Great weather for outdoor activities.
Cooling Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 65° | 47° | 56° | — | — |
| 2024 | 72° | 56° | 64° | — | — |
| 2023 | 60° | 44° | 52° | — | — |
| 2022 | 64° | 47° | 55° | — | — |
| 2021 | 75° | 48° | 62° | — | — |
| 2020warmest | 91° | 71° | 81° | — | — |
| 2019 | 50° | 42° | 46° | 0.13" | — |
| 2018 | 63° | 47° | 55° | — | — |
| 2017 | 60° | 45° | 52° | — | — |
| 2016 | 72° | 54° | 63° | — | — |
| 2015 | 64° | 45° | 54° | — | — |
| 2014 | 81° | 56° | 68° | — | — |
| 2013 | 64° | 45° | 54° | — | — |
| 2012 | 52° | 43° | 47° | — | — |
| 2011 | 58° | 43° | 50° | — | — |
| 2010 | 56° | 41° | 48° | — | — |
| 2009 | 76° | 66° | 71° | — | — |
| 2008 | 63° | 36° | 49° | — | — |
| 2007 | 80° | 40° | 60° | — | — |
| 2006 | 65° | 47° | 56° | — | — |
| 2005 | 73° | 52° | 62° | — | — |
| 2004 | 76° | 54° | 65° | — | — |
| 2003 | 94° | 54° | 74° | — | — |
| 2002 | 74° | 49° | 61° | — | — |
| 2001 | 66° | 50° | 58° | — | — |
| 2000 | 79° | 54° | 66° | — | — |
| 1999 | 69° | 48° | 59° | — | — |
| 1998 | 63° | 46° | 54° | — | — |
| 1997 | 83° | 59° | 71° | — | — |
| 1996 | 76° | 51° | 63° | — | — |
| 1995 | 68° | 50° | 59° | — | — |
| 1994 | 75° | 49° | 62° | — | — |
| 1993 | 67° | 53° | 60° | — | — |
| 1992 | 82° | 53° | 68° | — | — |
| 1991 | 76° | 47° | 61° | — | — |
| 1990 | 62° | 54° | 58° | — | — |
| 1989 | 76° | 45° | 60° | — | — |
| 1988 | 67° | 46° | 56° | — | — |
| 1987coldest | 53° | 40° | 46° | — | — |
| 1986 | 80° | 58° | 69° | — | — |
| 1985 | 56° | 43° | 49° | — | — |
| 1984 | 85° | 57° | 71° | — | — |
| 1983 | 84° | 61° | 72° | — | — |
| 1982 | 69° | 45° | 57° | — | — |
| 1981 | 80° | 57° | 69° | — | — |
| 1980 | 64° | 38° | 51° | — | — |
| 1979 | 87° | 44° | 66° | — | — |
| 1978 | 72° | 46° | 59° | — | — |
| 1977 | 56° | 39° | 47° | 0.13" | — |
| 1976 | 92° | 59° | 75° | — | — |
| 1975 | 87° | 65° | 76° | — | — |
| 1974 | 95° | 62° | 79° | — | — |
| 1973 | 72° | 45° | 58° | — | — |
| 1972 | 79° | 41° | 60° | — | — |
| 1971 | 69° | 43° | 56° | — | — |
55 years of data from LIVERMORE CALIFORNIA