Weather on October 17
Vacaville, CA
55 Years of Data
Avg High
80°F
Avg Low
48°F
Warmest
2020
76°F avg
Coldest
1971
48°F avg
About This Date
October 17th in Vacaville, CA typically brings warm fall weather, with average highs around 80°F and lows near 48°F — a 32°F daily swing. Over 55 years of records, the warmest October 17th was in 2020 (76°F average), while the coldest was 1971 (48°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 11% of October 17th dates historically, with the wettest October 17th recording 0.58" 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 17th in Vacaville, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 44° | 59° | — | — |
| 2024 | 78° | 52° | 65° | — | — |
| 2023 | 88° | 50° | 69° | — | — |
| 2022 | 79° | 47° | 63° | — | — |
| 2021 | 72° | 50° | 61° | — | — |
| 2020warmest | 96° | 55° | 76° | — | — |
| 2019 | 77° | 50° | 64° | — | — |
| 2018 | 82° | 41° | 62° | — | — |
| 2017 | 83° | 46° | 64° | — | — |
| 2016 | 71° | 51° | 61° | 0.03" | — |
| 2015 | 79° | 60° | 69° | — | — |
| 2014 | 76° | 49° | 62° | — | — |
| 2013 | 81° | 43° | 62° | — | — |
| 2012 | 91° | 54° | 72° | — | — |
| 2011 | 89° | 54° | 71° | — | — |
| 2010 | 65° | 56° | 60° | 0.33" | — |
| 2009 | 83° | 59° | 71° | — | — |
| 2008 | 87° | 50° | 69° | — | — |
| 2007 | 69° | 50° | 60° | 0.08" | — |
| 2006 | 75° | 45° | 60° | — | — |
| 2005 | 89° | 57° | 73° | — | — |
| 2004 | 70° | 53° | 61° | 0.58" | — |
| 2003 | 84° | 50° | 67° | — | — |
| 2002 | 73° | 41° | 57° | — | — |
| 2001 | 78° | 54° | 66° | — | — |
| 2000 | 83° | 47° | 65° | — | — |
| 1999 | 82° | 51° | 67° | — | — |
| 1998 | 77° | 46° | 62° | — | — |
| 1997 | 88° | 53° | 70° | — | — |
| 1996 | 79° | 44° | 61° | — | — |
| 1995 | 84° | 49° | 66° | — | — |
| 1994 | 75° | 47° | 61° | — | — |
| 1993 | 74° | 48° | 61° | — | — |
| 1992 | 83° | 49° | 66° | — | — |
| 1991 | 91° | 55° | 73° | — | — |
| 1990 | 85° | 47° | 66° | — | — |
| 1989 | 84° | 50° | 67° | — | — |
| 1988 | 92° | 57° | 74° | — | — |
| 1987 | 85° | 45° | 65° | — | — |
| 1986 | 73° | 52° | 62° | — | — |
| 1985 | 79° | 45° | 62° | — | — |
| 1984 | 64° | 35° | 50° | 0.25" | — |
| 1983 | 79° | 44° | 61° | — | — |
| 1982 | 74° | 46° | 60° | — | — |
| 1981 | 78° | 41° | 60° | — | — |
| 1980 | 75° | 38° | 56° | — | — |
| 1979 | 78° | 50° | 64° | — | — |
| 1978 | 84° | 49° | 66° | — | — |
| 1977 | 79° | 48° | 63° | — | — |
| 1976 | 84° | 44° | 64° | — | — |
| 1975 | 78° | 49° | 63° | — | — |
| 1974 | 90° | 48° | 69° | — | — |
| 1973 | 85° | 40° | 62° | — | — |
| 1972 | 69° | 51° | 60° | 0.28" | — |
| 1971coldest | 60° | 36° | 48° | — | — |
55 years of data from VACAVILLE/NUT TREE AP ASOS