Weather on January 1
Vacaville, CA
55 Years of Data
About This Date
January 1st in Vacaville, CA typically brings cool winter weather, with average highs around 55°F and lows near 36°F. Over 56 years of records, the warmest January 1st was in 1997 (62°F average), while the coldest was 1972 (35°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 34% of January 1st dates historically, with the wettest January 1st recording 3.36" of rain. The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.9°F cooler on this date compared to 20-30 years ago.
Planning for January 1st in Vacaville, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 56° | 47° | 51° | 0.8" | — |
| 2025 | 53° | 37° | 45° | — | — |
| 2024 | 64° | 37° | 51° | — | — |
| 2023 | 60° | 42° | 51° | — | — |
| 2022 | 53° | 30° | 42° | — | — |
| 2021 | 53° | 33° | 43° | — | — |
| 2020 | 57° | 40° | 48° | — | — |
| 2019 | 58° | 31° | 45° | — | — |
| 2018 | 68° | 37° | 53° | — | — |
| 2017 | 53° | 35° | 44° | — | — |
| 2016 | 51° | 32° | 42° | — | — |
| 2015 | 52° | 27° | 40° | — | — |
| 2014 | 63° | 29° | 46° | — | — |
| 2013 | 54° | 30° | 42° | — | — |
| 2012 | 63° | 30° | 47° | — | — |
| 2011 | 42° | 36° | 39° | 0.61" | — |
| 2010 | 58° | 47° | 52° | — | — |
| 2009 | 45° | 42° | 43° | — | — |
| 2008 | 58° | 31° | 44° | — | — |
| 2007 | 68° | 31° | 49° | — | — |
| 2006 | 54° | 43° | 48° | 1.34" | — |
| 2005 | 54° | 41° | 47° | 0.01" | — |
| 2004 | 54° | 39° | 46° | 2.34" | — |
| 2003 | 56° | 35° | 45° | — | — |
| 2002 | 56° | 52° | 54° | 0.38" | — |
| 2001 | 58° | 32° | 45° | — | — |
| 2000 | 55° | 32° | 44° | — | — |
| 1999 | 59° | 32° | 46° | — | — |
| 1998 | 58° | 36° | 47° | — | — |
| 1997warmest | 64° | 59° | 62° | 3.36" | — |
| 1996 | 72° | 50° | 61° | — | — |
| 1995 | 48° | 41° | 45° | 0.19" | — |
| 1994 | 48° | 40° | 44° | 0.02" | — |
| 1993 | 55° | 43° | 49° | 0.95" | — |
| 1992 | 57° | 37° | 47° | — | — |
| 1991 | 55° | 26° | 41° | — | — |
| 1990 | 52° | 29° | 40° | 0.19" | — |
| 1989 | 52° | 30° | 41° | — | — |
| 1988 | 45° | 29° | 37° | — | — |
| 1987 | 50° | 43° | 46° | 0.37" | — |
| 1986 | 59° | 43° | 51° | — | — |
| 1985 | 52° | 25° | 38° | — | — |
| 1984 | 57° | 33° | 45° | — | — |
| 1983 | 43° | 32° | 37° | — | — |
| 1982 | 54° | 38° | 46° | 0.03" | — |
| 1981 | 46° | 39° | 43° | — | — |
| 1980 | 62° | 37° | 50° | 0.01" | — |
| 1979 | 47° | 24° | 35° | — | — |
| 1978 | 53° | 38° | 45° | 0.02" | — |
| 1977 | 52° | 34° | 43° | 0.02" | — |
| 1976 | 52° | 38° | 45° | — | — |
| 1975 | 49° | 29° | 39° | — | — |
| 1974 | 49° | 36° | 42° | 0.07" | — |
| 1973 | 63° | 46° | 54° | — | — |
| 1972coldest | 44° | 27° | 35° | 0.01" | — |
| 1971 | 48° | 33° | 41° | 0.03" | — |
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
Most pleasant months in Vacaville, CA: March, April, May, October, November.
What to expect on January 1st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
January 1st outlook →