Weather on December 1
Vallejo, CA
55 Years of Data
Avg High
60°F
Avg Low
40°F
Warmest
2012
61°F avg
Coldest
2007
37°F avg
About This Date
December 1st in Vallejo, CA typically brings mild winter weather, with average highs around 60°F and lows near 40°F. Over 55 years of records, the warmest December 1st was in 2012 (61°F average), while the coldest was 2007 (37°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 25% of December 1st dates historically, with the wettest December 1st recording 5.74" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for December 1st in Vallejo, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 51° | 42° | 47° | — | — |
| 2024 | 64° | 44° | 54° | — | — |
| 2023 | 62° | 43° | 52° | — | — |
| 2022 | — | 46° | — | 1.45" | — |
| 2021 | 66° | 49° | 57° | — | — |
| 2020 | 65° | 42° | 53° | — | — |
| 2019 | 52° | 43° | 47° | 2.03" | — |
| 2018 | 58° | 45° | 51° | — | — |
| 2017 | 63° | 43° | 53° | — | — |
| 2016 | 61° | 41° | 51° | — | — |
| 2015 | 58° | 39° | 48° | — | — |
| 2014 | 65° | 51° | 58° | — | — |
| 2013 | 68° | 34° | 51° | — | — |
| 2012warmest | 64° | 57° | 61° | 0.81" | — |
| 2011 | 69° | 45° | 57° | — | — |
| 2010 | 57° | 29° | 43° | — | — |
| 2009 | 62° | 29° | 45° | — | — |
| 2008 | 53° | 38° | 45° | — | — |
| 2007coldest | 55° | 20° | 37° | — | — |
| 2006 | 59° | 28° | 44° | — | — |
| 2005 | 59° | 48° | 54° | 3.68" | — |
| 2004 | 55° | 24° | 40° | — | — |
| 2003 | 60° | 37° | 49° | 2.59" | — |
| 2002 | 64° | 36° | 50° | — | — |
| 2001 | 53° | 49° | 51° | 3.28" | — |
| 2000 | 59° | 37° | 48° | — | — |
| 1999 | 59° | 42° | 51° | 0.36" | — |
| 1998 | 60° | 43° | 51° | 0.38" | — |
| 1997 | 61° | 41° | 51° | — | — |
| 1996 | 59° | 42° | 51° | 0.3" | — |
| 1995 | 70° | 51° | 60° | — | — |
| 1994 | 60° | 38° | 49° | — | — |
| 1993 | 60° | 38° | 49° | — | — |
| 1992 | 64° | 35° | 50° | — | — |
| 1991 | 63° | 42° | 52° | — | — |
| 1990 | 60° | 39° | 50° | — | — |
| 1989 | 62° | 38° | 50° | — | — |
| 1988 | 58° | 39° | 48° | — | — |
| 1987 | 64° | 47° | 55° | 0.43" | — |
| 1986 | 57° | 35° | 46° | — | — |
| 1985 | 56° | 41° | 48° | — | — |
| 1984 | 57° | 42° | 50° | — | — |
| 1983 | 59° | 40° | 49° | 0.36" | — |
| 1982 | 56° | 46° | 51° | 0.25" | — |
| 1981 | 60° | 39° | 50° | — | — |
| 1980 | 58° | 39° | 48° | — | — |
| 1979 | 54° | 43° | 48° | — | — |
| 1978 | 60° | 49° | 54° | 0.13" | — |
| 1977 | 65° | 40° | 52° | — | — |
| 1976 | 60° | 35° | 48° | — | — |
| 1975 | 58° | 36° | 47° | — | — |
| 1974 | 58° | 40° | 49° | — | — |
| 1973 | 62° | 49° | 55° | 5.74" | — |
| 1972 | 47° | 39° | 43° | — | — |
| 1971 | 67° | 36° | 51° | — | — |
55 years of data from VALLEJO