Weather on January 4
Vacaville, CA
55 Years of Data
About This Date
January 4th in Vacaville, CA typically brings cool winter weather, with average highs around 55°F and lows near 37°F. Over 56 years of records, the warmest January 4th was in 2018 (56°F average), while the coldest was 1974 (35°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 39% of January 4th dates historically, with the wettest January 4th recording 10.06" of rain. The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
Planning for January 4th 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 | 55° | 44° | 50° | 2.16" | — |
| 2025 | 60° | 37° | 49° | — | — |
| 2024 | 63° | 35° | 49° | — | — |
| 2023 | 59° | 44° | 52° | 4.04" | — |
| 2022 | 59° | 48° | 54° | 0.13" | — |
| 2021 | 60° | 44° | 52° | 0.1" | — |
| 2020 | 61° | 41° | 51° | — | — |
| 2019 | 56° | 30° | 43° | — | — |
| 2018warmest | 61° | 51° | 56° | 0.28" | — |
| 2017 | 56° | 47° | 51° | 1.85" | — |
| 2016 | 52° | 44° | 48° | 0.79" | — |
| 2015 | 58° | 31° | 45° | — | — |
| 2014 | 71° | 31° | 51° | — | — |
| 2013 | 57° | 28° | 43° | — | — |
| 2012 | 67° | 33° | 50° | — | — |
| 2011 | 54° | 31° | 43° | — | — |
| 2010 | 55° | 41° | 48° | — | — |
| 2009 | 53° | 28° | 41° | — | — |
| 2008 | 54° | 47° | 50° | 6.63" | — |
| 2007 | 58° | 45° | 51° | — | — |
| 2006 | 62° | 47° | 54° | 0.03" | — |
| 2005 | 50° | 38° | 44° | — | — |
| 2004 | 49° | 27° | 38° | — | — |
| 2003 | 60° | 40° | 50° | — | — |
| 2002 | 52° | 36° | 44° | — | — |
| 2001 | 64° | 29° | 46° | — | — |
| 2000 | 58° | 34° | 46° | 0.2" | — |
| 1999 | 48° | 32° | 40° | — | — |
| 1998 | 54° | 43° | 48° | 1.27" | — |
| 1997 | 53° | 40° | 46° | — | — |
| 1996 | 58° | 41° | 49° | — | — |
| 1995 | 52° | 45° | 48° | 2.82" | — |
| 1994 | 48° | 40° | 44° | 0.18" | — |
| 1993 | 48° | 24° | 36° | — | — |
| 1992 | 55° | 44° | 50° | 0.13" | — |
| 1991 | 56° | 31° | 43° | — | — |
| 1990 | 56° | 31° | 43° | — | — |
| 1989 | 42° | 34° | 38° | — | — |
| 1988 | 46° | 41° | 44° | 3.51" | — |
| 1987 | 50° | 41° | 46° | 0.08" | — |
| 1986 | 58° | 48° | 53° | 4.93" | — |
| 1985 | 52° | 24° | 38° | — | — |
| 1984 | 48° | 44° | 46° | — | — |
| 1983 | 42° | 35° | 39° | — | — |
| 1982 | 48° | 41° | 45° | 10.06" | — |
| 1981 | 68° | 38° | 53° | — | — |
| 1980 | 49° | 42° | 45° | 0.03" | — |
| 1979 | 55° | 41° | 48° | 0.03" | — |
| 1978 | 55° | 48° | 52° | 1.47" | — |
| 1977 | 54° | 37° | 45° | — | — |
| 1976 | 54° | 28° | 41° | — | — |
| 1975 | 52° | 38° | 45° | — | — |
| 1974coldest | 44° | 27° | 35° | 2.79" | — |
| 1973 | 52° | 26° | 39° | — | — |
| 1972 | 47° | 29° | 38° | — | — |
| 1971 | 50° | 31° | 40° | — | — |
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
Vacaville, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.