Weather on January 9
Vacaville, CA
55 Years of Data
Avg High
56°F
Avg Low
37°F
Warmest
1995
56°F avg
Coldest
1999
36°F avg
About This Date
January 9th in Vacaville, CA typically brings cool winter weather, with average highs around 56°F and lows near 37°F. Over 56 years of records, the warmest January 9th was in 1995 (56°F average), while the coldest was 1999 (36°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 41% of January 9th dates historically, with the wettest January 9th recording 5.66" of rain. The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
Planning for January 9th in Vacaville, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 58° | 35° | 46° | — | — |
| 2025 | 75° | 36° | 55° | — | — |
| 2024 | 58° | 36° | 47° | 0.03" | — |
| 2023 | 60° | 44° | 52° | 5.66" | — |
| 2022 | 58° | 35° | 46° | — | — |
| 2021 | 63° | 31° | 47° | — | — |
| 2020 | 53° | 35° | 44° | 0.69" | — |
| 2019 | 63° | 46° | 54° | 0.2" | — |
| 2018 | 60° | 46° | 53° | 1.04" | — |
| 2017 | 59° | 49° | 54° | 1.85" | — |
| 2016 | 51° | 46° | 49° | 0.41" | — |
| 2015 | 61° | 42° | 51° | — | — |
| 2014 | 62° | 37° | 50° | — | — |
| 2013 | 54° | 35° | 44° | — | — |
| 2012 | 64° | 29° | 47° | — | — |
| 2011 | 48° | 29° | 39° | — | — |
| 2010 | 49° | 42° | 45° | — | — |
| 2009 | 65° | 36° | 50° | — | — |
| 2008 | 49° | 45° | 47° | 0.05" | — |
| 2007 | 62° | 32° | 47° | — | — |
| 2006 | 58° | 35° | 46° | — | — |
| 2005 | 55° | 38° | 46° | 0.48" | — |
| 2004 | 55° | 41° | 48° | 0.41" | — |
| 2003 | 48° | 42° | 45° | 2.08" | — |
| 2002 | 63° | 42° | 52° | — | — |
| 2001 | 51° | 33° | 42° | 0.05" | — |
| 2000 | 58° | 37° | 47° | — | — |
| 1999coldest | 39° | 32° | 36° | — | — |
| 1998 | 50° | 45° | 47° | 0.61" | — |
| 1997 | 58° | 35° | 46° | — | — |
| 1996 | 53° | 43° | 48° | — | — |
| 1995warmest | 60° | 52° | 56° | 4.32" | — |
| 1994 | 57° | 36° | 46° | — | — |
| 1993 | 52° | 35° | 43° | 0.03" | — |
| 1992 | 52° | 32° | 42° | — | — |
| 1991 | 52° | 45° | 48° | — | — |
| 1990 | 65° | 43° | 54° | — | — |
| 1989 | 48° | 39° | 44° | 0.13" | — |
| 1988 | 51° | 47° | 49° | 0.1" | — |
| 1987 | 55° | 31° | 43° | — | — |
| 1986 | 59° | 37° | 48° | — | — |
| 1985 | 52° | 42° | 47° | 0.64" | — |
| 1984 | 46° | 43° | 44° | — | — |
| 1983 | 68° | 31° | 49° | — | — |
| 1982 | 58° | 27° | 42° | — | — |
| 1981 | 44° | 38° | 41° | — | — |
| 1980 | 54° | 32° | 43° | 1.88" | — |
| 1979 | 57° | 47° | 52° | 0.2" | — |
| 1978 | 63° | 34° | 48° | 2.67" | — |
| 1977 | 51° | 26° | 39° | — | — |
| 1976 | 56° | 38° | 47° | 0.81" | — |
| 1975 | 50° | 41° | 46° | — | — |
| 1974 | 52° | 27° | 39° | — | — |
| 1973 | 52° | 33° | 42° | 4.19" | — |
| 1972 | 50° | 24° | 37° | — | — |
| 1971 | 53° | 30° | 42° | — | — |
56 years of data from VACAVILLE/NUT TREE AP ASOS