Weather on October 17
Vallejo, CA
55 Years of Data
Avg High
78°F
Avg Low
49°F
Warmest
2020
81°F avg
Coldest
1971
53°F avg
About This Date
October 17th in Vallejo, CA typically brings pleasant fall weather, with average highs around 78°F and lows near 49°F — a 29°F daily swing. Over 55 years of records, the warmest October 17th was in 2020 (81°F average), while the coldest was 1971 (53°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 9% of October 17th dates historically, with the wettest October 17th recording 1.75" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for October 17th in Vallejo, CA? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 51° | 63° | — | — |
| 2024 | 74° | 52° | 63° | — | — |
| 2023 | 86° | 59° | 73° | — | — |
| 2022 | 77° | 43° | 60° | — | — |
| 2021 | 84° | 54° | 69° | — | — |
| 2020warmest | 95° | 66° | 81° | — | — |
| 2019 | 75° | 52° | 63° | — | — |
| 2018 | 81° | 52° | 66° | — | — |
| 2017 | 85° | 56° | 70° | — | — |
| 2016 | 72° | 54° | 63° | 0.61" | — |
| 2015 | 81° | 57° | 69° | — | — |
| 2014 | 73° | 45° | 59° | — | — |
| 2013 | 80° | 38° | 59° | — | — |
| 2012 | 87° | 50° | 69° | — | — |
| 2011 | 86° | 48° | 67° | — | — |
| 2010 | 57° | 50° | 54° | 0.25" | — |
| 2009 | 80° | 51° | 66° | — | — |
| 2008 | 87° | 45° | 66° | — | — |
| 2007 | 69° | 41° | 55° | 0.36" | — |
| 2006 | 78° | 37° | 58° | — | — |
| 2005 | 85° | 49° | 67° | — | — |
| 2004 | 77° | 51° | 64° | — | — |
| 2003 | 84° | 50° | 67° | — | — |
| 2002 | 67° | 51° | 59° | — | — |
| 2001 | 70° | 55° | 62° | — | — |
| 2000 | 80° | 49° | 64° | — | — |
| 1999 | 82° | 42° | 62° | — | — |
| 1998 | 80° | 48° | 64° | — | — |
| 1997 | 85° | 52° | 68° | — | — |
| 1996 | 75° | 46° | 61° | — | — |
| 1995 | 80° | 49° | 64° | — | — |
| 1994 | 75° | 44° | 60° | — | — |
| 1993 | 71° | 50° | 61° | — | — |
| 1992 | 81° | 47° | 64° | — | — |
| 1991 | 76° | 55° | 65° | — | — |
| 1990 | 82° | 44° | 63° | — | — |
| 1989 | 81° | 48° | 64° | — | — |
| 1988 | 92° | 54° | 73° | — | — |
| 1987 | 83° | 41° | 62° | — | — |
| 1986 | 72° | 46° | 59° | — | — |
| 1985 | 72° | 41° | 56° | — | — |
| 1984 | 65° | 43° | 54° | 1.75" | — |
| 1983 | 78° | 43° | 60° | — | — |
| 1982 | 74° | 52° | 63° | — | — |
| 1981 | 77° | 44° | 61° | — | — |
| 1980 | 74° | 42° | 58° | — | — |
| 1979 | 81° | 52° | 66° | — | — |
| 1978 | 76° | 49° | 62° | — | — |
| 1977 | 73° | 45° | 59° | — | — |
| 1976 | 77° | 52° | 64° | — | — |
| 1975 | 79° | 52° | 65° | — | — |
| 1974 | 90° | 54° | 72° | — | — |
| 1973 | 78° | 51° | 65° | — | — |
| 1972 | 62° | 56° | 59° | 0.97" | — |
| 1971coldest | 64° | 41° | 53° | — | — |
55 years of data from VALLEJO