Weather on May 9
Vacaville, CA
55 Years of Data
Avg High
80°F
Avg Low
50°F
Warmest
2001
76°F avg
Coldest
2003
52°F avg
About This Date
May 9th in Vacaville, CA typically brings warm spring weather, with average highs around 80°F and lows near 50°F — a 30°F daily swing. Over 55 years of records, the warmest May 9th was in 2001 (76°F average), while the coldest was 2003 (52°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 9th dates historically, with the wettest May 9th recording 1.02" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Vacaville, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 49° | 71° | — | — |
| 2024 | 86° | 55° | 71° | — | — |
| 2023 | 74° | 43° | 58° | — | — |
| 2022 | 68° | 44° | 56° | — | — |
| 2021 | 90° | 63° | 76° | — | — |
| 2020 | 89° | 53° | 71° | — | — |
| 2019 | 76° | 53° | 64° | — | — |
| 2018 | 81° | 56° | 68° | — | — |
| 2017 | 88° | 51° | 69° | — | — |
| 2016 | 77° | 53° | 65° | — | — |
| 2015 | 81° | 50° | 65° | — | — |
| 2014 | 74° | 54° | 64° | — | — |
| 2013 | 80° | 52° | 66° | — | — |
| 2012 | 88° | 51° | 69° | — | — |
| 2011 | 73° | 48° | 61° | — | — |
| 2010 | 66° | 49° | 57° | 0.03" | — |
| 2009 | 86° | 55° | 71° | — | — |
| 2008 | 78° | 49° | 63° | — | — |
| 2007 | 88° | 56° | 72° | — | — |
| 2006 | 88° | 50° | 69° | — | — |
| 2005 | 65° | 49° | 57° | 0.94" | — |
| 2004 | 81° | 49° | 65° | — | — |
| 2003coldest | 67° | 38° | 52° | — | — |
| 2002 | 78° | 47° | 62° | — | — |
| 2001warmest | 95° | 57° | 76° | — | — |
| 2000 | 72° | 50° | 61° | — | — |
| 1999 | 74° | 50° | 62° | — | — |
| 1998 | 64° | 44° | 54° | 0.56" | — |
| 1997 | 92° | 52° | 72° | — | — |
| 1996 | 81° | 43° | 62° | — | — |
| 1995 | 70° | 48° | 59° | 0.2" | — |
| 1994 | 80° | 50° | 65° | — | — |
| 1993 | 89° | 49° | 69° | — | — |
| 1992 | 92° | 59° | 75° | — | — |
| 1991 | 72° | — | — | — | — |
| 1990 | 85° | 50° | 67° | — | — |
| 1989 | 81° | 53° | 67° | — | — |
| 1988 | 74° | 49° | 61° | — | — |
| 1987 | 92° | 57° | 74° | — | — |
| 1986 | 84° | 62° | 73° | — | — |
| 1985 | 79° | 41° | 60° | — | — |
| 1984 | 86° | 49° | 67° | — | — |
| 1983 | 70° | 38° | 54° | — | — |
| 1982 | 78° | 45° | 61° | — | — |
| 1981 | 85° | 54° | 69° | — | — |
| 1980 | 67° | 49° | 58° | 1.02" | — |
| 1979 | 74° | 51° | 62° | — | — |
| 1978 | 84° | 53° | 69° | — | — |
| 1977 | 64° | 48° | 56° | 0.03" | — |
| 1976 | 86° | 47° | 66° | — | — |
| 1975 | 78° | 39° | 59° | — | — |
| 1974 | 85° | 49° | 67° | — | — |
| 1973 | 88° | 40° | 64° | — | — |
| 1972 | 76° | 39° | 57° | — | — |
| 1971 | 76° | 46° | 61° | — | — |
55 years of data from VACAVILLE/NUT TREE AP ASOS