Weather on August 23
Vallejo, CA
55 Years of Data
Avg High
84°F
Avg Low
56°F
Warmest
2023
79°F avg
Coldest
2009
59°F avg
About This Date
August 23rd in Vallejo, CA typically brings warm summer weather, with average highs around 84°F and lows near 56°F — a 28°F daily swing. Over 55 years of records, the warmest August 23rd was in 2023 (79°F average), while the coldest was 2009 (59°F) — a 20°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for August 23rd in Vallejo, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 56° | 72° | — | — |
| 2024 | 73° | 57° | 65° | — | — |
| 2023warmest | 96° | 62° | 79° | — | — |
| 2022 | 95° | 53° | 74° | — | — |
| 2021 | 76° | 56° | 66° | — | — |
| 2020 | 93° | 59° | 76° | — | — |
| 2019 | 95° | 59° | 77° | — | — |
| 2018 | 77° | 58° | 67° | — | — |
| 2017 | 84° | 57° | 71° | — | — |
| 2016 | 79° | 57° | 68° | — | — |
| 2015 | 83° | 60° | 71° | — | — |
| 2014 | 77° | 58° | 67° | — | — |
| 2013 | 74° | 57° | 65° | — | — |
| 2012 | 73° | 53° | 63° | — | — |
| 2011 | 92° | 49° | 70° | — | — |
| 2010 | 96° | 48° | 72° | — | — |
| 2009coldest | 70° | 48° | 59° | — | — |
| 2008 | 76° | 55° | 65° | — | — |
| 2007 | 77° | 58° | 67° | — | — |
| 2006 | 82° | 53° | 68° | — | — |
| 2005 | 69° | 55° | 62° | — | — |
| 2004 | 77° | 60° | 69° | — | — |
| 2003 | 85° | 54° | 69° | — | — |
| 2002 | 68° | 52° | 60° | — | — |
| 2001 | 82° | 66° | 74° | — | — |
| 2000 | 74° | 56° | 65° | — | — |
| 1999 | 98° | 56° | 77° | — | — |
| 1998 | 87° | 66° | 77° | — | — |
| 1997 | 83° | 60° | 71° | — | — |
| 1996 | 92° | 55° | 73° | — | — |
| 1995 | 95° | 57° | 76° | — | — |
| 1994 | 84° | 51° | 68° | — | — |
| 1993 | 95° | 60° | 78° | — | — |
| 1992 | 94° | 55° | 74° | — | — |
| 1991 | 89° | 49° | 69° | — | — |
| 1990 | 92° | 60° | 76° | — | — |
| 1989 | 83° | 55° | 69° | — | — |
| 1988 | 90° | 60° | 75° | — | — |
| 1987 | 86° | 49° | 67° | — | — |
| 1986 | 88° | 49° | 68° | — | — |
| 1985 | 91° | 53° | 72° | — | — |
| 1984 | 88° | 52° | 70° | — | — |
| 1983 | 85° | 51° | 68° | — | — |
| 1982 | 90° | 61° | 75° | — | — |
| 1981 | 79° | 53° | 66° | — | — |
| 1980 | 79° | 50° | 64° | — | — |
| 1979 | 86° | 64° | 75° | — | — |
| 1978 | 79° | 53° | 66° | — | — |
| 1977 | 92° | 56° | 74° | — | — |
| 1976 | 79° | 54° | 66° | — | — |
| 1975 | 87° | 55° | 71° | — | — |
| 1974 | 96° | 60° | 78° | — | — |
| 1973 | 72° | 55° | 63° | — | — |
| 1972 | 89° | 59° | 74° | — | — |
| 1971 | 87° | 58° | 72° | — | — |
55 years of data from VALLEJO