Weather on May 20
Vallejo, CA
55 Years of Data
Avg High
77°F
Avg Low
50°F
Warmest
1983
75°F avg
Coldest
2002
54°F avg
About This Date
May 20th in Vallejo, CA typically brings pleasant spring weather, with average highs around 77°F and lows near 50°F — a 27°F daily swing. Over 55 years of records, the warmest May 20th was in 1983 (75°F average), while the coldest was 2002 (54°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 20th dates historically, with the wettest May 20th recording 2.03" 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 May 20th in Vallejo, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 55° | 68° | — | — |
| 2024 | 80° | 48° | 64° | — | — |
| 2023 | 72° | 52° | 62° | — | — |
| 2022 | 83° | 49° | 66° | — | — |
| 2021 | 71° | — | — | — | — |
| 2020 | 78° | 52° | 65° | — | — |
| 2019 | 67° | 43° | 55° | 0.36" | — |
| 2018 | 71° | 52° | 61° | — | — |
| 2017 | 94° | 54° | 74° | — | — |
| 2016 | 73° | 48° | 61° | — | — |
| 2015 | 70° | 51° | 60° | — | — |
| 2014 | 72° | 43° | 57° | — | — |
| 2013 | 91° | 51° | 71° | — | — |
| 2012 | 80° | 47° | 63° | — | — |
| 2011 | 68° | 52° | 60° | — | — |
| 2010 | 71° | 39° | 55° | — | — |
| 2009 | 70° | 40° | 55° | — | — |
| 2008 | 78° | 52° | 65° | — | — |
| 2007 | 80° | 45° | 62° | — | — |
| 2006 | 72° | 48° | 60° | — | — |
| 2005 | 80° | 47° | 63° | — | — |
| 2004 | 69° | 49° | 59° | — | — |
| 2003 | 89° | 47° | 68° | — | — |
| 2002coldest | 63° | 46° | 54° | 2.03" | — |
| 2001 | 89° | 47° | 68° | — | — |
| 2000 | 87° | 54° | 70° | — | — |
| 1999 | 67° | 49° | 58° | — | — |
| 1998 | 67° | 66° | 66° | — | — |
| 1997 | 77° | 58° | 67° | — | — |
| 1996 | 75° | 51° | 63° | — | — |
| 1995 | 72° | 49° | 60° | — | — |
| 1994 | 75° | 47° | 61° | — | — |
| 1993 | 76° | 58° | 67° | — | — |
| 1992 | 81° | 53° | 67° | — | — |
| 1991 | 78° | 46° | 62° | — | — |
| 1990 | 67° | 50° | 58° | 0.81" | — |
| 1989 | 75° | 46° | 61° | — | — |
| 1988 | 97° | 51° | 74° | — | — |
| 1987 | 75° | 49° | 62° | 0.28" | — |
| 1986 | 73° | 51° | 62° | — | — |
| 1985 | 82° | 60° | 71° | — | — |
| 1984 | 85° | 50° | 67° | — | — |
| 1983warmest | 94° | 57° | 75° | — | — |
| 1982 | 85° | 58° | 71° | — | — |
| 1981 | 76° | 45° | 60° | — | — |
| 1980 | 92° | 55° | 73° | — | — |
| 1979 | 71° | 56° | 63° | — | — |
| 1978 | 82° | 53° | 68° | — | — |
| 1977 | 73° | 51° | 62° | — | — |
| 1976 | 72° | 46° | 59° | — | — |
| 1975 | 73° | 48° | 61° | — | — |
| 1974 | 66° | 47° | 56° | — | — |
| 1973 | 70° | 50° | 60° | — | — |
| 1972 | 65° | 52° | 58° | — | — |
| 1971 | 79° | 47° | 63° | — | — |
55 years of data from VALLEJO