Weather on March 15
Vacaville, CA
55 Years of Data
Avg High
67°F
Avg Low
43°F
Warmest
2004
70°F avg
Coldest
2002
44°F avg
About This Date
March 15th in Vacaville, CA typically brings mild spring weather, with average highs around 67°F and lows near 43°F. Over 56 years of records, the warmest March 15th was in 2004 (70°F average), while the coldest was 2002 (44°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 34% of March 15th dates historically, with the wettest March 15th recording 2.79" of rain. The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
Planning for March 15th in Vacaville, CA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 85° | 45° | 65° | — | — |
| 2025 | 62° | 45° | 53° | — | — |
| 2024 | 74° | 47° | 60° | — | — |
| 2023 | 66° | 37° | 52° | — | — |
| 2022 | 74° | 48° | 61° | 0.1" | — |
| 2021 | 54° | 37° | 45° | 0.2" | — |
| 2020 | 57° | 45° | 51° | — | — |
| 2019 | 70° | 36° | 53° | — | — |
| 2018 | 55° | 35° | 45° | 1.37" | — |
| 2017 | 71° | 50° | 61° | — | — |
| 2016 | 69° | 41° | 55° | — | — |
| 2015 | 75° | 53° | 64° | — | — |
| 2014 | 80° | 45° | 62° | — | — |
| 2013 | 78° | 45° | 61° | — | — |
| 2012 | 61° | 54° | 57° | 0.05" | — |
| 2011 | 59° | 53° | 56° | 1.24" | — |
| 2010 | 68° | 40° | 54° | — | — |
| 2009 | 62° | 51° | 57° | 0.03" | — |
| 2008 | 60° | 42° | 51° | 0.05" | — |
| 2007 | 85° | 45° | 65° | — | — |
| 2006 | 60° | 43° | 51° | 0.03" | — |
| 2005 | 72° | 40° | 56° | — | — |
| 2004warmest | 85° | 56° | 70° | — | — |
| 2003 | 64° | 48° | 56° | 1.57" | — |
| 2002coldest | 57° | 31° | 44° | 0.03" | — |
| 2001 | 67° | 41° | 54° | — | — |
| 2000 | 78° | 42° | 60° | — | — |
| 1999 | 68° | 44° | 56° | 0.03" | — |
| 1998 | 74° | 53° | 63° | — | — |
| 1997 | 74° | 49° | 61° | — | — |
| 1996 | 73° | — | — | — | — |
| 1995 | 67° | 38° | 52° | 0.3" | — |
| 1994 | 76° | 41° | 58° | — | — |
| 1993 | 69° | 49° | 59° | — | — |
| 1992 | 62° | 45° | 53° | 0.76" | — |
| 1991 | 60° | 31° | 45° | — | — |
| 1990 | 73° | 43° | 58° | — | — |
| 1989 | 67° | 41° | 54° | — | — |
| 1988 | 69° | 33° | 51° | — | — |
| 1987 | 63° | 39° | 51° | — | — |
| 1986 | 56° | 44° | 50° | 2.79" | — |
| 1985 | 74° | 41° | 57° | — | — |
| 1984 | 62° | 49° | 55° | 0.71" | — |
| 1983 | 63° | 37° | 50° | — | — |
| 1982 | 57° | 38° | 47° | — | — |
| 1981 | 59° | 43° | 51° | 2.54" | — |
| 1980 | 63° | 40° | 51° | — | — |
| 1979 | 59° | 49° | 54° | 0.1" | — |
| 1978 | 69° | 41° | 55° | — | — |
| 1977 | 54° | 42° | 48° | 0.97" | — |
| 1976 | 74° | 37° | 55° | — | — |
| 1975 | 59° | 42° | 51° | — | — |
| 1974 | 74° | 45° | 59° | — | — |
| 1973 | 66° | 33° | 50° | — | — |
| 1972 | 81° | 44° | 62° | — | — |
| 1971 | 62° | 36° | 49° | 0.05" | — |
56 years of data from VACAVILLE/NUT TREE AP ASOS