Weather on January 4
Vacaville, CA
55 Years of Data
Avg High
55°F
Avg Low
37°F
Warmest
2018
56°F avg
Coldest
1974
35°F avg
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.
Warming Trend
1.5°F per decade on this date
| 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° | — | — |
56 years of data from VACAVILLE/NUT TREE AP ASOS