Weather on January 31
Vacaville, CA
55 Years of Data
Avg High
59°F
Avg Low
37°F
Warmest
1995
60°F avg
Coldest
1975
37°F avg
About This Date
January 31st in Vacaville, CA typically brings cool winter weather, with average highs around 59°F and lows near 37°F. Over 56 years of records, the warmest January 31st was in 1995 (60°F average), while the coldest was 1975 (37°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 29% of January 31st dates historically, with the wettest January 31st recording 3.94" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for January 31st in Vacaville, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 64° | 36° | 50° | — | — |
| 2025 | 50° | 38° | 44° | 0.91" | — |
| 2024 | 61° | 52° | 56° | 2.62" | — |
| 2023 | 60° | 32° | 46° | — | — |
| 2022 | 67° | 37° | 52° | — | — |
| 2021 | 63° | 40° | 51° | — | — |
| 2020 | 67° | 39° | 53° | — | — |
| 2019 | 68° | 44° | 56° | — | — |
| 2018 | 70° | 37° | 53° | — | — |
| 2017 | 62° | 32° | 47° | — | — |
| 2016 | 59° | 47° | 53° | 0.05" | — |
| 2015 | 78° | 40° | 59° | — | — |
| 2014 | 63° | 34° | 48° | — | — |
| 2013 | 65° | 32° | 48° | — | — |
| 2012 | 61° | 35° | 48° | — | — |
| 2011 | 66° | 33° | 50° | — | — |
| 2010 | 58° | 37° | 47° | — | — |
| 2009 | 70° | 37° | 53° | — | — |
| 2008 | 51° | 42° | 47° | 1.91" | — |
| 2007 | 59° | 31° | 45° | — | — |
| 2006 | 56° | 37° | 46° | — | — |
| 2005 | 62° | 35° | 49° | — | — |
| 2004 | 59° | 39° | 49° | — | — |
| 2003 | 52° | 45° | 48° | 0.05" | — |
| 2002 | 51° | 25° | 38° | — | — |
| 2001 | 64° | 30° | 47° | — | — |
| 2000 | 52° | 47° | 49° | 0.41" | — |
| 1999 | 55° | 38° | 46° | 1.42" | — |
| 1998 | 62° | 46° | 54° | 0.86" | — |
| 1997 | 66° | 48° | 57° | — | — |
| 1996 | 53° | 44° | 49° | 3.94" | — |
| 1995warmest | 68° | 52° | 60° | 0.03" | — |
| 1994 | 61° | 36° | 48° | — | — |
| 1993 | 62° | 31° | 46° | — | — |
| 1992 | 49° | 43° | 46° | — | — |
| 1991 | 58° | 37° | 47° | — | — |
| 1990 | 55° | 32° | 44° | — | — |
| 1989 | 65° | 36° | 50° | — | — |
| 1988 | 60° | 31° | 45° | — | — |
| 1987 | 65° | 40° | 52° | 0.03" | — |
| 1986 | 63° | 44° | 53° | 0.66" | — |
| 1985 | 60° | 30° | 45° | — | — |
| 1984 | 64° | 39° | 52° | — | — |
| 1983 | 58° | 36° | 47° | — | — |
| 1982 | 60° | 31° | 45° | — | — |
| 1981 | 59° | 32° | 46° | — | — |
| 1980 | 52° | 34° | 43° | — | — |
| 1979 | 45° | 31° | 38° | 0.56" | — |
| 1978 | 47° | 40° | 43° | — | — |
| 1977 | 56° | 34° | 45° | — | — |
| 1976 | 72° | 36° | 54° | — | — |
| 1975coldest | 47° | 28° | 37° | 1.91" | — |
| 1974 | 52° | 36° | 44° | 0.2" | — |
| 1973 | 55° | 42° | 49° | 0.1" | — |
| 1972 | 51° | 29° | 40° | — | — |
| 1971 | 45° | 38° | 41° | — | — |
56 years of data from VACAVILLE/NUT TREE AP ASOS