Weather on May 1
San Ramon, CA
55 Years of Data
About This Date
May 1st in San Ramon, CA typically brings pleasant spring weather, with average highs around 70°F and lows near 47°F. Over 55 years of records, the warmest May 1st was in 1981 (75°F average), while the coldest was 1988 (43°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 1st dates historically, with the wettest May 1st recording 1.35" of rain. The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
Planning for May 1st in San Ramon, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 72° | 61° | 66° | — | — |
| 2025 | 72° | 55° | 63° | — | — |
| 2024 | 72° | 47° | 59° | — | — |
| 2023 | 58° | 40° | 49° | — | — |
| 2022 | 65° | 40° | 52° | — | — |
| 2021 | 75° | 44° | 60° | — | — |
| 2020 | 70° | 47° | 58° | — | — |
| 2019 | 62° | 48° | 55° | — | — |
| 2018 | 65° | 40° | 52° | — | — |
| 2017 | 76° | 52° | 64° | — | — |
| 2016 | 69° | 53° | 61° | — | — |
| 2015 | 82° | 62° | 72° | — | — |
| 2014 | 82° | 65° | 73° | — | — |
| 2013 | 77° | 56° | 66° | — | — |
| 2012 | 74° | 43° | 58° | — | — |
| 2011 | 67° | 49° | 58° | — | — |
| 2010 | 63° | 42° | 52° | — | — |
| 2009 | 66° | 49° | 57° | — | — |
| 2008 | 61° | 33° | 47° | — | — |
| 2007 | 71° | 45° | 58° | — | — |
| 2006 | 87° | 53° | 70° | — | — |
| 2005 | 72° | 50° | 61° | — | — |
| 2004 | 87° | 51° | 69° | — | — |
| 2003 | 74° | 48° | 61° | — | — |
| 2002 | 65° | 46° | 55° | — | — |
| 2001 | 77° | 49° | 63° | — | — |
| 2000 | 72° | 47° | 59° | — | — |
| 1999 | 62° | 47° | 54° | — | — |
| 1998 | 64° | 54° | 59° | — | — |
| 1997 | 70° | 43° | 56° | — | — |
| 1996 | 90° | 61° | 75° | — | — |
| 1995 | 63° | 53° | 58° | — | — |
| 1994 | 62° | 44° | 53° | — | — |
| 1993 | 83° | 57° | 70° | — | — |
| 1992 | 77° | 46° | 62° | — | — |
| 1991 | 48° | 40° | 44° | — | — |
| 1990 | 72° | 52° | 62° | — | — |
| 1989 | 60° | 47° | 53° | — | — |
| 1988coldest | 56° | 31° | 43° | — | — |
| 1986 | 69° | 41° | 55° | — | — |
| 1985 | 80° | 52° | 66° | — | — |
| 1984 | 58° | 43° | 50° | — | — |
| 1983 | 52° | 40° | 46° | 0.58" | — |
| 1982 | 68° | 38° | 53° | — | — |
| 1981warmest | 88° | 62° | 75° | — | — |
| 1980 | 75° | 44° | 60° | — | — |
| 1979 | 64° | 43° | 53° | — | — |
| 1978 | 57° | 44° | 51° | 0.13" | — |
| 1977 | 69° | 47° | 58° | 1.35" | — |
| 1976 | 80° | 43° | 61° | — | — |
| 1975 | 72° | 52° | 62° | — | — |
| 1974 | 70° | 40° | 55° | — | — |
| 1973 | 73° | 38° | 55° | — | — |
| 1972 | 73° | 52° | 62° | — | — |
| 1971 | 73° | 41° | 57° | — | — |
San Ramon, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Ramon, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
San Ramon, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Ramon, CA
San Ramon, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.