Weather on April 20
San Francisco, CA
55 Years of Data
Avg High
64°F
Avg Low
51°F
Warmest
2009
78°F avg
Coldest
2008
48°F avg
About This Date
April 20th in San Francisco, CA typically brings mild spring weather, with average highs around 64°F and lows near 51°F. Over 55 years of records, the warmest April 20th was in 2009 (78°F average), while the coldest was 2008 (48°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 29% of April 20th dates historically, with the wettest April 20th recording 2.31" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for April 20th in San Francisco, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 60° | 50° | 55° | — | — |
| 2024 | 62° | 51° | 57° | — | — |
| 2023 | 63° | 47° | 55° | — | — |
| 2022 | 66° | 51° | 59° | 0.28" | — |
| 2021 | 58° | 49° | 53° | — | — |
| 2020 | 59° | 52° | 55° | — | — |
| 2019 | 58° | 51° | 54° | 0.03" | — |
| 2018 | 65° | 49° | 57° | — | — |
| 2017 | 63° | 54° | 58° | 0.03" | — |
| 2016 | 71° | 55° | 63° | — | — |
| 2015 | 59° | 52° | 55° | — | — |
| 2014 | 75° | 51° | 63° | — | — |
| 2013 | 71° | 51° | 61° | — | — |
| 2012 | 77° | 55° | 66° | — | — |
| 2011 | 63° | 53° | 58° | 0.1" | — |
| 2010 | 59° | 48° | 54° | 1.75" | — |
| 2009warmest | 93° | 62° | 78° | — | — |
| 2008coldest | 53° | 42° | 48° | — | — |
| 2007 | 59° | 46° | 53° | 0.25" | — |
| 2006 | 65° | 48° | 56° | — | — |
| 2005 | 60° | 48° | 54° | — | — |
| 2004 | 63° | 53° | 58° | 0.13" | — |
| 2003 | 58° | 50° | 54° | — | — |
| 2002 | 57° | 48° | 53° | — | — |
| 2001 | 54° | 45° | 49° | 2.31" | — |
| 2000 | 67° | 52° | 59° | — | — |
| 1999 | 60° | 49° | 54° | — | — |
| 1998 | 67° | 50° | 58° | — | — |
| 1997 | 68° | 57° | 63° | — | — |
| 1996 | 63° | 49° | 56° | — | — |
| 1995 | 58° | 49° | 53° | 0.2" | — |
| 1994 | 63° | 50° | 56° | — | — |
| 1993 | 71° | 52° | 61° | — | — |
| 1992 | 71° | 55° | 63° | — | — |
| 1991 | 63° | 51° | 57° | 1.6" | — |
| 1990 | 65° | 53° | 59° | 0.03" | — |
| 1989 | 68° | 53° | 61° | — | — |
| 1988 | 61° | 51° | 56° | 0.43" | — |
| 1987 | 82° | 52° | 67° | — | — |
| 1986 | 84° | 57° | 71° | — | — |
| 1985 | 56° | 49° | 52° | 0.36" | — |
| 1984 | 61° | 46° | 53° | — | — |
| 1983 | 67° | 53° | 60° | — | — |
| 1982 | 76° | 55° | 65° | — | — |
| 1981 | 62° | 50° | 56° | — | — |
| 1980 | 63° | 48° | 55° | 0.25" | — |
| 1979 | 62° | 49° | 55° | — | — |
| 1978 | 57° | 50° | 54° | 0.13" | — |
| 1977 | 55° | 46° | 51° | — | — |
| 1976 | 68° | 49° | 58° | — | — |
| 1975 | 67° | 49° | 58° | — | — |
| 1974 | 60° | 50° | 55° | — | — |
| 1973 | 67° | 53° | 60° | — | — |
| 1972 | 55° | 47° | 51° | — | — |
| 1971 | 52° | 46° | 49° | 0.1" | — |
55 years of data from SAN FRANCISCO DWTN