Weather on May 31
Vacaville, CA
55 Years of Data
About This Date
May 31st in Vacaville, CA typically brings warm spring weather, with average highs around 86°F and lows near 54°F — a 32°F daily swing. Over 56 years of records, the warmest May 31st was in 2001 (85°F average), while the coldest was 2011 (56°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 9% of May 31st dates historically, with the wettest May 31st recording 0.56" 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 31st in Vacaville, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 89° | 51° | 70° | — | — |
| 2025 | 105° | 58° | 81° | — | — |
| 2024 | 97° | 55° | 76° | — | — |
| 2023 | 79° | 52° | 65° | — | — |
| 2022 | 82° | 50° | 66° | — | — |
| 2021 | 104° | 58° | 81° | — | — |
| 2020 | 80° | 56° | 68° | — | — |
| 2019 | 90° | 53° | 71° | — | — |
| 2018 | 73° | 52° | 62° | — | — |
| 2017 | 81° | 58° | 69° | 0.08" | — |
| 2016 | 101° | 59° | 80° | — | — |
| 2015 | 82° | 54° | 68° | — | — |
| 2014 | 84° | 48° | 66° | — | — |
| 2013 | 98° | 53° | 76° | — | — |
| 2012 | 97° | 55° | 76° | — | — |
| 2011coldest | 63° | 50° | 56° | 0.08" | — |
| 2010 | 83° | 59° | 71° | — | — |
| 2009 | 84° | 56° | 70° | — | — |
| 2008 | 76° | 53° | 64° | — | — |
| 2007 | 81° | 52° | 66° | — | — |
| 2006 | 88° | 54° | 71° | — | — |
| 2005 | 90° | 58° | 74° | — | — |
| 2004 | 93° | 54° | 73° | — | — |
| 2003 | 91° | 54° | 72° | — | — |
| 2002 | 92° | 60° | 76° | — | — |
| 2001warmest | 106° | 64° | 85° | — | — |
| 2000 | 86° | 55° | 71° | — | — |
| 1999 | 78° | 52° | 65° | — | — |
| 1998 | 78° | 48° | 63° | — | — |
| 1997 | 93° | 62° | 78° | — | — |
| 1996 | 87° | 49° | 68° | — | — |
| 1995 | 94° | 56° | 75° | — | — |
| 1994 | 87° | 55° | 71° | — | — |
| 1993 | 75° | 58° | 66° | 0.56" | — |
| 1992 | 97° | 58° | 77° | — | — |
| 1991 | 88° | 68° | 78° | — | — |
| 1990 | 69° | 48° | 59° | 0.56" | — |
| 1989 | 90° | 46° | 68° | — | — |
| 1988 | — | 50° | — | — | — |
| 1987 | 80° | 55° | 68° | — | — |
| 1986 | 85° | 55° | 70° | — | — |
| 1985 | 85° | 49° | 67° | 0.05" | — |
| 1984 | 94° | 52° | 73° | — | — |
| 1983 | 79° | 54° | 66° | — | — |
| 1982 | 71° | 53° | 62° | — | — |
| 1981 | 90° | 55° | 72° | — | — |
| 1980 | 72° | 52° | 62° | — | — |
| 1979 | 93° | 52° | 72° | — | — |
| 1978 | 91° | 70° | 80° | — | — |
| 1977 | 93° | 53° | 73° | — | — |
| 1976 | 81° | 54° | 67° | — | — |
| 1975 | 93° | 55° | 74° | — | — |
| 1974 | 86° | 48° | 67° | — | — |
| 1973 | 83° | 55° | 69° | — | — |
| 1972 | 84° | 56° | 70° | — | — |
| 1971 | 71° | 43° | 57° | — | — |
Vacaville, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Vacaville, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Vacaville, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Vacaville, CA
Vacaville, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.