Weather on May 9
Vallejo, CA
55 Years of Data
Avg High
75°F
Avg Low
48°F
Warmest
2024
76°F avg
Coldest
2003
49°F avg
About This Date
May 9th in Vallejo, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 48°F — a 27°F daily swing. Over 55 years of records, the warmest May 9th was in 2024 (76°F average), while the coldest was 2003 (49°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 9% of May 9th dates historically, with the wettest May 9th recording 2.46" of rain. The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Vallejo, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 51° | 71° | — | — |
| 2024warmest | 87° | 64° | 76° | — | — |
| 2023 | 70° | 49° | 59° | — | — |
| 2022 | 63° | 41° | 52° | — | — |
| 2021 | 92° | — | — | — | — |
| 2020 | 96° | 51° | 74° | — | — |
| 2019 | 69° | 52° | 60° | — | — |
| 2018 | 78° | 55° | 67° | — | — |
| 2017 | 87° | 50° | 69° | — | — |
| 2016 | 72° | 51° | 61° | — | — |
| 2015 | 73° | 50° | 62° | — | — |
| 2014 | 69° | 50° | 60° | — | — |
| 2013 | 71° | 50° | 61° | — | — |
| 2012 | 74° | 48° | 61° | — | — |
| 2011 | 70° | 38° | 54° | — | — |
| 2010 | 63° | 48° | 55° | 0.08" | — |
| 2009 | 75° | 41° | 58° | — | — |
| 2008 | 74° | 39° | 56° | — | — |
| 2007 | 74° | 45° | 59° | — | — |
| 2006 | 77° | 51° | 64° | — | — |
| 2005 | 67° | 50° | 58° | 2.46" | — |
| 2004 | 79° | 46° | 62° | — | — |
| 2003coldest | 64° | 33° | 49° | — | — |
| 2002 | 80° | 46° | 63° | — | — |
| 2001 | 81° | 48° | 64° | — | — |
| 2000 | 70° | 52° | 61° | — | — |
| 1999 | 69° | 36° | 52° | — | — |
| 1998 | 66° | 50° | 58° | — | — |
| 1997 | 86° | 50° | 68° | — | — |
| 1996 | 79° | 44° | 61° | — | — |
| 1995 | 62° | 46° | 54° | — | — |
| 1994 | 76° | 51° | 63° | — | — |
| 1993 | 89° | 47° | 68° | — | — |
| 1992 | 94° | 53° | 73° | — | — |
| 1991 | 73° | 44° | 59° | — | — |
| 1990 | 71° | 49° | 60° | — | — |
| 1989 | 64° | 52° | 58° | — | — |
| 1988 | 74° | 46° | 60° | — | — |
| 1987 | 92° | 55° | 73° | — | — |
| 1986 | 88° | 48° | 68° | — | — |
| 1985 | 74° | 41° | 57° | — | — |
| 1984 | 82° | 45° | 63° | — | — |
| 1983 | 72° | 42° | 57° | — | — |
| 1982 | 72° | 46° | 59° | — | — |
| 1981 | 85° | 58° | 71° | — | — |
| 1980 | 66° | 49° | 57° | 0.25" | — |
| 1979 | 76° | 46° | 61° | 0.08" | — |
| 1978 | 76° | 52° | 64° | — | — |
| 1977 | 70° | 50° | 60° | 0.64" | — |
| 1976 | 69° | 51° | 60° | — | — |
| 1975 | 67° | 48° | 57° | — | — |
| 1974 | 75° | 50° | 63° | — | — |
| 1973 | 77° | 51° | 64° | — | — |
| 1972 | 69° | 48° | 59° | — | — |
| 1971 | 63° | 49° | 56° | — | — |
55 years of data from VALLEJO