Weather on April 21
Vacaville, CA
55 Years of Data
Avg High
75°F
Avg Low
46°F
Warmest
2009
78°F avg
Coldest
1971
49°F avg
About This Date
April 21st in Vacaville, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 46°F — a 29°F daily swing. Over 55 years of records, the warmest April 21st was in 2009 (78°F average), while the coldest was 1971 (49°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 16% of April 21st dates historically, with the wettest April 21st recording 1.07" of rain. The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Vacaville, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 44° | 64° | — | — |
| 2024 | 86° | 45° | 65° | — | — |
| 2023 | 85° | 47° | 66° | — | — |
| 2022 | 68° | 51° | 60° | 0.1" | — |
| 2021 | 79° | 46° | 62° | — | — |
| 2020 | 79° | 41° | 60° | — | — |
| 2019 | 81° | 46° | 63° | — | — |
| 2018 | 81° | 46° | 63° | — | — |
| 2017 | 80° | 47° | 63° | — | — |
| 2016 | 74° | 57° | 65° | — | — |
| 2015 | 65° | 50° | 57° | — | — |
| 2014 | 76° | 49° | 62° | — | — |
| 2013 | 89° | 47° | 68° | — | — |
| 2012 | 90° | 57° | 73° | — | — |
| 2011 | 70° | 48° | 59° | 0.1" | — |
| 2010 | 59° | 47° | 53° | 0.2" | — |
| 2009warmest | 97° | 60° | 78° | — | — |
| 2008 | 64° | 36° | 50° | — | — |
| 2007 | 60° | 48° | 54° | 0.53" | — |
| 2006 | 69° | 46° | 58° | — | — |
| 2005 | 76° | 42° | 59° | — | — |
| 2004 | 68° | 47° | 57° | — | — |
| 2003 | 60° | 41° | 51° | — | — |
| 2002 | 75° | 38° | 56° | — | — |
| 2001 | 70° | 39° | 54° | — | — |
| 2000 | 77° | 45° | 61° | — | — |
| 1999 | 77° | 46° | 62° | — | — |
| 1998 | 83° | 48° | 65° | — | — |
| 1997 | 75° | 59° | 67° | — | — |
| 1996 | 69° | 42° | 56° | — | — |
| 1995 | 73° | 48° | 61° | — | — |
| 1994 | 76° | 50° | 63° | — | — |
| 1993 | 75° | 53° | 64° | — | — |
| 1992 | 79° | 51° | 65° | — | — |
| 1991 | 71° | 51° | 61° | — | — |
| 1990 | 69° | 52° | 60° | — | — |
| 1989 | 72° | 50° | 61° | 0.05" | — |
| 1988 | 64° | 47° | 55° | — | — |
| 1987 | 80° | 51° | 66° | — | — |
| 1986 | 87° | 45° | 66° | — | — |
| 1985 | 65° | 44° | 54° | 0.05" | — |
| 1984 | 80° | 50° | 65° | — | — |
| 1983 | 67° | 43° | 55° | — | — |
| 1982 | 79° | 51° | 65° | — | — |
| 1981 | 89° | 45° | 67° | — | — |
| 1980 | 62° | 39° | 51° | 0.03" | — |
| 1979 | 75° | 38° | 56° | — | — |
| 1978 | 62° | 40° | 51° | 0.05" | — |
| 1977 | 79° | 38° | 58° | — | — |
| 1976 | 79° | 42° | 60° | 1.07" | — |
| 1975 | 73° | 47° | 60° | — | — |
| 1974 | 77° | 41° | 59° | — | — |
| 1973 | 77° | 55° | 66° | — | — |
| 1972 | 75° | 45° | 60° | — | — |
| 1971coldest | 65° | 34° | 49° | — | — |
55 years of data from VACAVILLE/NUT TREE AP ASOS