Weather on May 1
Vacaville, CA
55 Years of Data
Avg High
79°F
Avg Low
49°F
Warmest
1996
78°F avg
Coldest
2023
54°F avg
About This Date
May 1st in Vacaville, CA typically brings pleasant spring weather, with average highs around 79°F and lows near 49°F — a 30°F daily swing. Over 55 years of records, the warmest May 1st was in 1996 (78°F average), while the coldest was 2023 (54°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 16% of May 1st dates historically, with the wettest May 1st recording 1.8" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for May 1st in Vacaville, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 51° | 67° | — | — |
| 2024 | 82° | 58° | 70° | — | — |
| 2023coldest | 61° | 48° | 54° | 0.38" | — |
| 2022 | 86° | 46° | 66° | — | — |
| 2021 | 86° | 47° | 66° | — | — |
| 2020 | 83° | 47° | 65° | — | — |
| 2019 | 80° | 44° | 62° | — | — |
| 2018 | 79° | 43° | 61° | — | — |
| 2017 | 91° | 54° | 72° | — | — |
| 2016 | 85° | 57° | 71° | — | — |
| 2015 | 91° | 51° | 71° | — | — |
| 2014 | 90° | 51° | 70° | — | — |
| 2013 | 88° | 63° | 75° | — | — |
| 2012 | 73° | 51° | 62° | — | — |
| 2011 | 83° | 47° | 65° | — | — |
| 2010 | 79° | 47° | 63° | — | — |
| 2009 | 65° | 54° | 59° | 1.4" | — |
| 2008 | 79° | 50° | 64° | — | — |
| 2007 | 79° | 49° | 64° | 0.03" | — |
| 2006 | 85° | 51° | 68° | — | — |
| 2005 | 75° | 48° | 62° | — | — |
| 2004 | 88° | 49° | 68° | — | — |
| 2003 | 70° | 44° | 57° | — | — |
| 2002 | 70° | 45° | 57° | — | — |
| 2001 | 84° | 51° | 68° | — | — |
| 2000 | 83° | 44° | 63° | — | — |
| 1999 | 77° | 49° | 63° | — | — |
| 1998 | 65° | 55° | 60° | 0.15" | — |
| 1997 | 76° | 43° | 59° | — | — |
| 1996warmest | 97° | 60° | 78° | — | — |
| 1995 | 71° | 56° | 63° | 1.8" | — |
| 1994 | 77° | 43° | 60° | — | — |
| 1993 | 91° | 60° | 76° | — | — |
| 1992 | 85° | 46° | 65° | — | — |
| 1991 | 66° | 45° | 55° | 0.08" | — |
| 1990 | 85° | 55° | 70° | — | — |
| 1989 | 80° | 42° | 61° | — | — |
| 1988 | 69° | 45° | 57° | — | — |
| 1987 | 68° | 48° | 58° | 0.25" | — |
| 1986 | 73° | 49° | 61° | — | — |
| 1985 | 91° | 46° | 69° | — | — |
| 1984 | 68° | 51° | 60° | — | — |
| 1983 | 65° | 45° | 55° | 0.61" | — |
| 1982 | 74° | 41° | 57° | — | — |
| 1981 | 88° | 50° | 69° | — | — |
| 1980 | 80° | 51° | 66° | — | — |
| 1979 | 69° | 49° | 59° | — | — |
| 1978 | 79° | 54° | 66° | — | — |
| 1977 | 69° | 53° | 61° | 1.3" | — |
| 1976 | 87° | 53° | 70° | — | — |
| 1975 | 76° | 43° | 59° | — | — |
| 1974 | 78° | 48° | 63° | — | — |
| 1973 | 79° | 42° | 60° | — | — |
| 1972 | 89° | 42° | 66° | — | — |
| 1971 | 77° | 49° | 63° | — | — |
55 years of data from VACAVILLE/NUT TREE AP ASOS