Weather on January 15
Vacaville, CA
55 Years of Data
About This Date
January 15th in Vacaville, CA typically brings cool winter weather, with average highs around 55°F and lows near 38°F. Over 56 years of records, the warmest January 15th was in 2000 (56°F average), while the coldest was 1977 (36°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 36% of January 15th dates historically, with the wettest January 15th recording 4.01" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for January 15th 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 | 69° | 35° | 52° | — | — |
| 2025 | 64° | 31° | 48° | — | — |
| 2024 | 60° | 37° | 49° | — | — |
| 2023 | 53° | 46° | 50° | 0.56" | — |
| 2022 | 57° | 35° | 46° | — | — |
| 2021 | 66° | 36° | 51° | — | — |
| 2020 | 52° | 28° | 40° | — | — |
| 2019 | 53° | 47° | 50° | 4.01" | — |
| 2018 | 53° | 45° | 49° | — | — |
| 2017 | 53° | 34° | 43° | — | — |
| 2016 | 54° | 41° | 47° | 0.41" | — |
| 2015 | 58° | 34° | 46° | — | — |
| 2014 | 70° | 31° | 51° | — | — |
| 2013 | 52° | 24° | 38° | — | — |
| 2012 | 55° | 28° | 42° | — | — |
| 2011 | 51° | 40° | 45° | — | — |
| 2010 | 55° | 40° | 47° | — | — |
| 2009 | 70° | 35° | 52° | — | — |
| 2008 | 62° | 32° | 47° | — | — |
| 2007 | 53° | 24° | 39° | — | — |
| 2006 | 57° | 37° | 47° | — | — |
| 2005 | 43° | 39° | 41° | — | — |
| 2004 | 52° | 42° | 47° | 0.03" | — |
| 2003 | 62° | 40° | 51° | — | — |
| 2002 | 56° | 41° | 48° | — | — |
| 2001 | 54° | 46° | 50° | — | — |
| 2000warmest | 62° | 50° | 56° | 0.41" | — |
| 1999 | 58° | 47° | 52° | 0.23" | — |
| 1998 | 53° | 48° | 51° | 1.4" | — |
| 1997 | 45° | 35° | 40° | 0.64" | — |
| 1996 | 50° | 42° | 46° | 0.18" | — |
| 1995 | 56° | 41° | 48° | 0.05" | — |
| 1994 | 62° | 32° | 47° | — | — |
| 1993 | 52° | 37° | 44° | 1.42" | — |
| 1992 | 56° | 36° | 46° | — | — |
| 1991 | 56° | 50° | 53° | — | — |
| 1990 | 60° | 39° | 50° | — | — |
| 1989 | 55° | 30° | 43° | — | — |
| 1988 | 55° | 45° | 50° | 2.74" | — |
| 1987 | 50° | 36° | 43° | — | — |
| 1986 | 52° | 37° | 44° | 0.64" | — |
| 1985 | 44° | 29° | 36° | — | — |
| 1984 | 46° | 34° | 40° | 0.25" | — |
| 1983 | 49° | 37° | 43° | — | — |
| 1982 | 49° | 36° | 42° | — | — |
| 1981 | 64° | 34° | 49° | — | — |
| 1980 | 59° | 48° | 54° | 0.81" | — |
| 1979 | 50° | 45° | 47° | 2.62" | — |
| 1978 | 55° | 46° | 51° | 3.3" | — |
| 1977coldest | 43° | 30° | 36° | — | — |
| 1976 | 59° | 32° | 46° | — | — |
| 1975 | 52° | 29° | 40° | — | — |
| 1974 | 60° | 49° | 54° | 0.46" | — |
| 1973 | 57° | 50° | 54° | 0.36" | — |
| 1972 | 50° | 28° | 39° | — | — |
| 1971 | 53° | 43° | 48° | 0.13" | — |