Weather on October 20
Vacaville, CA
55 Years of Data
Avg High
79°F
Avg Low
49°F
Warmest
1991
83°F avg
Coldest
2004
54°F avg
About This Date
October 20th in Vacaville, CA typically brings pleasant fall weather, with average highs around 79°F and lows near 49°F — a 30°F daily swing. Over 55 years of records, the warmest October 20th was in 1991 (83°F average), while the coldest was 2004 (54°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 9% of October 20th dates historically, with the wettest October 20th recording 1.32" 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 20th in Vacaville, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 52° | 66° | — | — |
| 2024 | 79° | 44° | 61° | — | — |
| 2023 | 88° | 52° | 70° | — | — |
| 2022 | 89° | 49° | 69° | — | — |
| 2021 | 64° | 51° | 58° | 0.08" | — |
| 2020 | 93° | 51° | 72° | — | — |
| 2019 | 81° | 45° | 63° | — | — |
| 2018 | 85° | 44° | 64° | — | — |
| 2017 | 66° | 46° | 56° | 0.03" | — |
| 2016 | 85° | 46° | 65° | — | — |
| 2015 | 85° | 56° | 70° | — | — |
| 2014 | 74° | 55° | 64° | — | — |
| 2013 | 83° | 43° | 63° | — | — |
| 2012 | 79° | 52° | 65° | — | — |
| 2011 | 80° | 50° | 65° | — | — |
| 2010 | 78° | 48° | 63° | — | — |
| 2009 | 72° | 49° | 60° | — | — |
| 2008 | 77° | 47° | 62° | — | — |
| 2007 | 69° | 54° | 61° | — | — |
| 2006 | 90° | 49° | 69° | — | — |
| 2005 | 77° | 49° | 63° | — | — |
| 2004coldest | 62° | 47° | 54° | 0.2" | — |
| 2003 | 90° | 50° | 70° | — | — |
| 2002 | 79° | 45° | 62° | — | — |
| 2001 | 82° | 50° | 66° | — | — |
| 2000 | 77° | 51° | 64° | — | — |
| 1999 | 86° | 46° | 66° | — | — |
| 1998 | 87° | 56° | 71° | — | — |
| 1997 | 81° | 47° | 64° | — | — |
| 1996 | 70° | 48° | 59° | — | — |
| 1995 | 87° | 50° | 69° | — | — |
| 1994 | 76° | 45° | 60° | — | — |
| 1993 | 79° | 47° | 63° | — | — |
| 1992 | 80° | 50° | 65° | — | — |
| 1991warmest | 93° | 73° | 83° | — | — |
| 1990 | 76° | 50° | 63° | — | — |
| 1989 | 82° | 54° | 68° | — | — |
| 1988 | 90° | 54° | 72° | — | — |
| 1987 | 77° | 49° | 63° | — | — |
| 1986 | 74° | 44° | 59° | — | — |
| 1985 | 65° | 50° | 57° | — | — |
| 1984 | 69° | 44° | 57° | — | — |
| 1983 | 85° | 47° | 66° | — | — |
| 1982 | 74° | 59° | 66° | — | — |
| 1981 | 83° | 44° | 63° | — | — |
| 1980 | 83° | 45° | 64° | — | — |
| 1979 | 64° | 49° | 56° | 1.32" | — |
| 1978 | 73° | 46° | 60° | — | — |
| 1977 | 71° | 45° | 58° | — | — |
| 1976 | 85° | 44° | 64° | — | — |
| 1975 | 85° | 53° | 69° | — | — |
| 1974 | 81° | 45° | 63° | — | — |
| 1973 | 76° | 55° | 65° | — | — |
| 1972 | 70° | 51° | 60° | — | — |
| 1971 | 68° | 41° | 55° | 0.03" | — |
55 years of data from VACAVILLE/NUT TREE AP ASOS