Weather on January 17
Vacaville, CA
55 Years of Data
Avg High
56°F
Avg Low
39°F
Warmest
1991
62°F avg
Coldest
2012
35°F avg
About This Date
January 17th in Vacaville, CA typically brings cool winter weather, with average highs around 56°F and lows near 39°F. Over 56 years of records, the warmest January 17th was in 1991 (62°F average), while the coldest was 2012 (35°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 41% of January 17th dates historically, with the wettest January 17th recording 2.51" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for January 17th 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 | 62° | 33° | 48° | — | — |
| 2025 | 61° | 32° | 46° | — | — |
| 2024 | 62° | 40° | 51° | — | — |
| 2023 | 59° | 35° | 47° | — | — |
| 2022 | 63° | 36° | 49° | — | — |
| 2021 | 74° | 48° | 61° | — | — |
| 2020 | 49° | 33° | 41° | — | — |
| 2019 | 61° | 50° | 55° | 0.43" | — |
| 2018 | 56° | 43° | 49° | — | — |
| 2017 | 46° | 32° | 39° | — | — |
| 2016 | 57° | 52° | 54° | 2.01" | — |
| 2015 | 56° | 42° | 49° | — | — |
| 2014 | 72° | 29° | 51° | — | — |
| 2013 | 59° | 25° | 42° | — | — |
| 2012coldest | 52° | 18° | 35° | — | — |
| 2011 | 52° | 46° | 49° | — | — |
| 2010 | 54° | 47° | 50° | 0.38" | — |
| 2009 | 69° | 37° | 53° | — | — |
| 2008 | 58° | 35° | 46° | — | — |
| 2007 | 61° | 32° | 46° | 0.03" | — |
| 2006 | 58° | 41° | 49° | 0.84" | — |
| 2005 | 46° | 41° | 44° | 0.03" | — |
| 2004 | 50° | 47° | 48° | 0.03" | — |
| 2003 | 47° | 35° | 41° | 0.03" | — |
| 2002 | 56° | 34° | 45° | — | — |
| 2001 | 57° | 30° | 44° | — | — |
| 2000 | 52° | 40° | 46° | 0.15" | — |
| 1999 | 58° | 49° | 53° | 0.2" | — |
| 1998 | 64° | 50° | 57° | — | — |
| 1997 | 50° | 43° | 46° | — | — |
| 1996 | 60° | 30° | 45° | — | — |
| 1995 | 51° | 32° | 42° | 0.03" | — |
| 1994 | 67° | 36° | 51° | — | — |
| 1993 | 53° | 40° | 46° | 1.85" | — |
| 1992 | 46° | 38° | 42° | 0.64" | — |
| 1991warmest | 66° | 57° | 62° | — | — |
| 1990 | 58° | 38° | 48° | — | — |
| 1989 | 58° | 31° | 44° | — | — |
| 1988 | 51° | 42° | 47° | 2.51" | — |
| 1987 | 60° | 35° | 48° | — | — |
| 1986 | 65° | 36° | 50° | 0.76" | — |
| 1985 | 48° | 30° | 39° | — | — |
| 1984 | 56° | 29° | 42° | — | — |
| 1983 | 51° | 44° | 48° | — | — |
| 1982 | 40° | 35° | 37° | 0.08" | — |
| 1981 | 59° | 48° | 54° | 0.2" | — |
| 1980 | 59° | 51° | 55° | 0.84" | — |
| 1979 | 55° | 32° | 44° | 0.13" | — |
| 1978 | 58° | 46° | 52° | 0.51" | — |
| 1977 | 41° | 35° | 38° | — | — |
| 1976 | 65° | 34° | 49° | — | — |
| 1975 | 53° | 37° | 45° | — | — |
| 1974 | 65° | 49° | 57° | 1.17" | — |
| 1973 | 56° | 43° | 49° | 0.53" | — |
| 1972 | 39° | 38° | 38° | — | — |
| 1971 | 62° | 46° | 54° | 0.05" | — |
56 years of data from VACAVILLE/NUT TREE AP ASOS