Weather on January 18
Vacaville, CA
55 Years of Data
Avg High
57°F
Avg Low
39°F
Warmest
2021
66°F avg
Coldest
1972
37°F avg
About This Date
January 18th in Vacaville, CA typically brings cool winter weather, with average highs around 57°F and lows near 39°F. Over 56 years of records, the warmest January 18th was in 2021 (66°F average), while the coldest was 1972 (37°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 30% of January 18th dates historically, with the wettest January 18th recording 4.95" of rain. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for January 18th in Vacaville, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 65° | 35° | 50° | — | — |
| 2025 | 63° | 31° | 47° | — | — |
| 2024 | 58° | 39° | 48° | — | — |
| 2023 | 56° | 32° | 44° | 0.76" | — |
| 2022 | 62° | 36° | 49° | — | — |
| 2021warmest | 76° | 56° | 66° | — | — |
| 2020 | 56° | 36° | 46° | — | — |
| 2019 | 60° | 49° | 54° | 0.05" | — |
| 2018 | 58° | 49° | 53° | 0.1" | — |
| 2017 | 49° | 43° | 46° | 4.95" | — |
| 2016 | 63° | 52° | 57° | 1.07" | — |
| 2015 | 55° | 49° | 52° | — | — |
| 2014 | 70° | 27° | 49° | — | — |
| 2013 | 65° | 26° | 46° | — | — |
| 2012 | 57° | 24° | 41° | — | — |
| 2011 | 63° | 44° | 53° | — | — |
| 2010 | 56° | 49° | 52° | 2.18" | — |
| 2009 | 72° | 38° | 55° | — | — |
| 2008 | 60° | 33° | 47° | — | — |
| 2007 | 64° | 29° | 46° | — | — |
| 2006 | 55° | 44° | 50° | 0.76" | — |
| 2005 | 46° | 42° | 44° | — | — |
| 2004 | 53° | 38° | 45° | — | — |
| 2003 | 47° | 42° | 44° | 0.03" | — |
| 2002 | 61° | 28° | 44° | — | — |
| 2001 | 52° | 27° | 39° | — | — |
| 2000 | 58° | 47° | 52° | 1.22" | — |
| 1999 | 57° | 53° | 55° | 0.89" | — |
| 1998 | 61° | 45° | 53° | 2.11" | — |
| 1997 | 50° | 42° | 46° | — | — |
| 1996 | 60° | 43° | 51° | 2.13" | — |
| 1995 | 54° | 38° | 46° | — | — |
| 1994 | 63° | 35° | 49° | — | — |
| 1993 | 56° | 42° | 49° | 0.76" | — |
| 1992 | 55° | 34° | 44° | — | — |
| 1991 | 64° | 35° | 50° | — | — |
| 1990 | 55° | 37° | 46° | — | — |
| 1989 | 62° | 33° | 48° | — | — |
| 1988 | 59° | 34° | 46° | — | — |
| 1987 | 52° | 27° | 39° | — | — |
| 1986 | 59° | 46° | 53° | — | — |
| 1985 | 49° | 36° | 42° | — | — |
| 1984 | 52° | 28° | 40° | — | — |
| 1983 | 50° | 44° | 47° | 3.07" | — |
| 1982 | 50° | 38° | 44° | — | — |
| 1981 | 65° | 44° | 54° | — | — |
| 1980 | 54° | 41° | 47° | — | — |
| 1979 | 55° | 38° | 46° | — | — |
| 1978 | 55° | 45° | 50° | 0.28" | — |
| 1977 | 40° | 34° | 37° | — | — |
| 1976 | 70° | 30° | 50° | — | — |
| 1975 | 49° | 38° | 43° | — | — |
| 1974 | 63° | 48° | 55° | 0.56" | — |
| 1973 | 57° | 48° | 53° | 4.11" | — |
| 1972coldest | 42° | 32° | 37° | — | — |
| 1971 | 60° | 48° | 54° | — | — |
56 years of data from VACAVILLE/NUT TREE AP ASOS