Weather on October 15
Vacaville, CA
55 Years of Data
Avg High
81°F
Avg Low
50°F
Warmest
2020
79°F avg
Coldest
2025
54°F avg
About This Date
October 15th in Vacaville, CA typically brings warm fall weather, with average highs around 81°F and lows near 50°F — a 31°F daily swing. Over 55 years of records, the warmest October 15th was in 2020 (79°F average), while the coldest was 2025 (54°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 15% of October 15th dates historically, with the wettest October 15th recording 1.14" 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 October 15th in Vacaville, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025coldest | 62° | 46° | 54° | 0.08" | — |
| 2024 | 87° | 52° | 69° | — | — |
| 2023 | 85° | 49° | 67° | — | — |
| 2022 | 81° | 51° | 66° | — | — |
| 2021 | 81° | 41° | 61° | — | — |
| 2020warmest | 94° | 64° | 79° | — | — |
| 2019 | 81° | 38° | 59° | — | — |
| 2018 | 84° | 47° | 65° | — | — |
| 2017 | 84° | 46° | 65° | — | — |
| 2016 | 71° | 52° | 61° | 0.69" | — |
| 2015 | 90° | 61° | 75° | — | — |
| 2014 | 73° | 54° | 63° | 0.18" | — |
| 2013 | 82° | 42° | 62° | — | — |
| 2012 | 84° | 49° | 66° | — | — |
| 2011 | 85° | 57° | 71° | — | — |
| 2010 | 95° | 56° | 75° | — | — |
| 2009 | 74° | 63° | 68° | 0.1" | — |
| 2008 | 86° | 49° | 67° | — | — |
| 2007 | 69° | 53° | 61° | — | — |
| 2006 | 64° | 50° | 57° | — | — |
| 2005 | 74° | 51° | 62° | 0.15" | — |
| 2004 | 83° | 52° | 67° | — | — |
| 2003 | 81° | 43° | 62° | — | — |
| 2002 | 79° | 48° | 63° | — | — |
| 2001 | 88° | 51° | 69° | — | — |
| 2000 | 77° | 47° | 62° | — | — |
| 1999 | 87° | 59° | 73° | — | — |
| 1998 | 76° | 47° | 61° | — | — |
| 1997 | 87° | 51° | 69° | — | — |
| 1996 | 84° | 49° | 66° | — | — |
| 1995 | 88° | 48° | 68° | — | — |
| 1994 | 77° | 56° | 66° | — | — |
| 1993 | 70° | 66° | 68° | 0.86" | — |
| 1992 | 74° | 46° | 60° | — | — |
| 1991 | 95° | 55° | 75° | — | — |
| 1990 | 85° | 51° | 68° | — | — |
| 1989 | 77° | 46° | 62° | — | — |
| 1988 | 86° | 51° | 69° | — | — |
| 1987 | 81° | 45° | 63° | — | — |
| 1986 | 84° | 47° | 65° | — | — |
| 1985 | 82° | 41° | 62° | — | — |
| 1984 | 70° | 51° | 60° | — | — |
| 1983 | 77° | 43° | 60° | — | — |
| 1982 | 82° | 47° | 64° | — | — |
| 1981 | 74° | 40° | 57° | — | — |
| 1980 | 71° | 52° | 61° | — | — |
| 1979 | 79° | 62° | 70° | — | — |
| 1978 | 86° | 47° | 66° | — | — |
| 1977 | 88° | 48° | 68° | — | — |
| 1976 | 85° | 43° | 64° | — | — |
| 1975 | 77° | 47° | 62° | — | — |
| 1974 | 89° | 44° | 67° | — | — |
| 1973 | 85° | 38° | 61° | — | — |
| 1972 | 70° | 52° | 61° | 1.14" | — |
| 1971 | 72° | 45° | 58° | 0.2" | — |
55 years of data from VACAVILLE/NUT TREE AP ASOS