Weather on May 15
Vallejo, CA
55 Years of Data
Avg High
76°F
Avg Low
51°F
Warmest
2008
83°F avg
Coldest
1999
51°F avg
About This Date
May 15th in Vallejo, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 51°F — a 25°F daily swing. Over 55 years of records, the warmest May 15th was in 2008 (83°F average), while the coldest was 1999 (51°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 15th dates historically, with the wettest May 15th recording 2.34" 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 15th in Vallejo, CA? Great weather for outdoor activities.
Cooling Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 51° | 65° | — | — |
| 2024 | 74° | 51° | 62° | — | — |
| 2023 | 75° | 54° | 64° | — | — |
| 2022 | 84° | 53° | 69° | — | — |
| 2021 | 69° | 49° | 59° | — | — |
| 2020 | 79° | 51° | 65° | — | — |
| 2019 | 63° | 52° | 57° | 2.34" | — |
| 2018 | 69° | 53° | 61° | — | — |
| 2017 | 74° | 47° | 60° | — | — |
| 2016 | 79° | 52° | 65° | — | — |
| 2015 | 70° | 49° | 59° | — | — |
| 2014 | 89° | 45° | 67° | — | — |
| 2013 | 75° | 49° | 62° | — | — |
| 2012 | 69° | 47° | 58° | — | — |
| 2011 | 60° | 45° | 52° | 0.15" | — |
| 2010 | 65° | 47° | 56° | — | — |
| 2009 | 78° | 51° | 65° | — | — |
| 2008warmest | 101° | 65° | 83° | — | — |
| 2007 | 68° | 47° | 57° | — | — |
| 2006 | 76° | 53° | 64° | — | — |
| 2005 | 76° | 59° | 67° | — | — |
| 2004 | 76° | 50° | 63° | — | — |
| 2003 | 71° | 49° | 60° | — | — |
| 2002 | 74° | 48° | 61° | — | — |
| 2001 | 76° | 53° | 64° | — | — |
| 2000 | 68° | 47° | 57° | 1.4" | — |
| 1999coldest | 69° | 34° | 51° | — | — |
| 1998 | 69° | 49° | 59° | — | — |
| 1997 | 90° | 61° | 75° | — | — |
| 1996 | 67° | 60° | 63° | — | — |
| 1995 | 70° | 48° | 59° | 0.56" | — |
| 1994 | 69° | 52° | 60° | 0.1" | — |
| 1993 | 79° | 49° | 64° | — | — |
| 1992 | 75° | 51° | 63° | — | — |
| 1991 | 83° | 47° | 65° | — | — |
| 1990 | 81° | 47° | 64° | — | — |
| 1989 | 83° | 50° | 66° | — | — |
| 1988 | 80° | 48° | 64° | — | — |
| 1987 | 90° | 60° | 75° | — | — |
| 1986 | 84° | 59° | 72° | — | — |
| 1985 | 88° | 46° | 67° | — | — |
| 1984 | 75° | 43° | 59° | — | — |
| 1983 | 79° | 55° | 67° | — | — |
| 1982 | 83° | 56° | 69° | — | — |
| 1981 | 72° | 53° | 62° | — | — |
| 1980 | 78° | 45° | 61° | — | — |
| 1979 | 73° | 51° | 62° | — | — |
| 1978 | 71° | 54° | 62° | 0.2" | — |
| 1977 | 68° | 42° | 55° | — | — |
| 1976 | 77° | 55° | 66° | — | — |
| 1975 | 61° | 50° | 55° | — | — |
| 1974 | 70° | 46° | 58° | — | — |
| 1973 | 79° | 53° | 66° | — | — |
| 1972 | 89° | 49° | 69° | — | — |
| 1971 | 78° | 52° | 65° | — | — |
55 years of data from VALLEJO