Weather on April 20
San Ramon, CA
55 Years of Data
Avg High
66°F
Avg Low
45°F
Warmest
2009
72°F avg
Coldest
2008
39°F avg
About This Date
April 20th in San Ramon, CA typically brings mild spring weather, with average highs around 66°F and lows near 45°F. Over 54 years of records, the warmest April 20th was in 2009 (72°F average), while the coldest was 2008 (39°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 7% of April 20th dates historically, with the wettest April 20th recording 1.27" of rain. The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for April 20th in San Ramon, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 42° | 54° | — | — |
| 2024 | 69° | 53° | 61° | — | — |
| 2023 | 55° | 40° | 47° | — | — |
| 2022 | 56° | 41° | 48° | — | — |
| 2021 | 72° | 41° | 56° | — | — |
| 2020 | 59° | 43° | 51° | — | — |
| 2019 | 75° | 46° | 61° | — | — |
| 2018 | 61° | 40° | 50° | — | — |
| 2017 | 65° | 41° | 53° | — | — |
| 2016 | 76° | 52° | 64° | — | — |
| 2015 | 73° | 53° | 63° | — | — |
| 2014 | 65° | 49° | 57° | — | — |
| 2013 | 77° | 54° | 65° | — | — |
| 2012 | 73° | 55° | 64° | — | — |
| 2011 | 62° | 45° | 53° | — | — |
| 2010 | 61° | 38° | 49° | 1.04" | — |
| 2009warmest | 81° | 64° | 72° | — | — |
| 2008coldest | 56° | 23° | 39° | — | — |
| 2007 | 64° | 44° | 54° | — | — |
| 2006 | 77° | 46° | 62° | — | — |
| 2005 | 69° | 45° | 57° | — | — |
| 2004 | 65° | 52° | 58° | — | — |
| 2003 | 63° | 46° | 54° | — | — |
| 2002 | 67° | 43° | 55° | — | — |
| 2001 | 52° | 39° | 45° | — | — |
| 2000 | 73° | 47° | 60° | — | — |
| 1999 | 64° | 46° | 55° | — | — |
| 1998 | 78° | 47° | 62° | — | — |
| 1997 | 72° | 57° | 64° | — | — |
| 1996 | 59° | 43° | 51° | — | — |
| 1995 | 59° | 44° | 52° | — | — |
| 1994 | 67° | 46° | 56° | — | — |
| 1993 | 65° | 49° | 57° | — | — |
| 1992 | 75° | 51° | 63° | — | — |
| 1991 | 61° | 48° | 54° | — | — |
| 1990 | 54° | 43° | 48° | — | — |
| 1989 | 74° | 45° | 59° | — | — |
| 1987 | 65° | 45° | 55° | — | — |
| 1986 | 74° | 51° | 62° | — | — |
| 1985 | 58° | 37° | 47° | — | — |
| 1984 | 52° | 37° | 44° | — | — |
| 1983 | 61° | 41° | 51° | 1.27" | — |
| 1982 | 75° | 52° | 63° | — | — |
| 1981 | 48° | 39° | 44° | 0.03" | — |
| 1980 | 72° | 48° | 60° | — | — |
| 1979 | 68° | 41° | 55° | — | — |
| 1978 | 60° | 40° | 50° | 0.2" | — |
| 1977 | 82° | 49° | 65° | — | — |
| 1976 | 76° | 45° | 60° | — | — |
| 1975 | 65° | 40° | 52° | — | — |
| 1974 | 62° | 37° | 50° | — | — |
| 1973 | 65° | 43° | 54° | — | — |
| 1972 | 67° | 40° | 53° | — | — |
| 1971 | 62° | 40° | 51° | — | — |
54 years of data from LIVERMORE CALIFORNIA