Weather on August 12
Vallejo, CA
55 Years of Data
Avg High
85°F
Avg Low
55°F
Warmest
1998
78°F avg
Coldest
1988
62°F avg
About This Date
August 12th in Vallejo, CA typically brings warm summer weather, with average highs around 85°F and lows near 55°F — a 30°F daily swing. Over 55 years of records, the warmest August 12th was in 1998 (78°F average), while the coldest was 1988 (62°F) — a 16°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for August 12th in Vallejo, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 57° | 68° | — | — |
| 2024 | 81° | 54° | 67° | — | — |
| 2023 | 91° | 58° | 74° | — | — |
| 2022 | 86° | 57° | 72° | — | — |
| 2021 | 86° | 57° | 72° | — | — |
| 2020 | 90° | 56° | 73° | — | — |
| 2019 | 97° | 60° | 78° | — | — |
| 2018 | 90° | 56° | 73° | — | — |
| 2017 | 86° | 56° | 71° | — | — |
| 2016 | 88° | 54° | 71° | — | — |
| 2015 | 88° | 56° | 72° | — | — |
| 2014 | 77° | 54° | 65° | — | — |
| 2013 | 76° | 52° | 64° | — | — |
| 2012 | 80° | 48° | 64° | — | — |
| 2011 | 74° | 56° | 65° | — | — |
| 2010 | 76° | 52° | 64° | — | — |
| 2009 | 89° | 57° | 73° | — | — |
| 2008 | 79° | 57° | 68° | — | — |
| 2007 | 78° | 50° | 64° | — | — |
| 2006 | 83° | — | — | — | — |
| 2005 | 83° | 55° | 69° | — | — |
| 2004 | 76° | 60° | 68° | — | — |
| 2003 | 86° | 54° | 70° | — | — |
| 2002 | 83° | 54° | 68° | — | — |
| 2001 | 90° | 53° | 71° | — | — |
| 2000 | 81° | 51° | 66° | — | — |
| 1999 | 78° | 56° | 67° | — | — |
| 1998warmest | 96° | 61° | 78° | — | — |
| 1997 | 89° | 59° | 74° | — | — |
| 1996 | 99° | 52° | 75° | — | — |
| 1995 | 98° | 51° | 75° | — | — |
| 1994 | 96° | 55° | 76° | — | — |
| 1993 | 86° | 53° | 70° | — | — |
| 1992 | 90° | 60° | 75° | — | — |
| 1991 | 85° | 53° | 69° | — | — |
| 1990 | 89° | 58° | 73° | — | — |
| 1989 | 88° | 50° | 69° | — | — |
| 1988coldest | 71° | 54° | 62° | — | — |
| 1987 | 83° | 51° | 67° | — | — |
| 1986 | 91° | 51° | 71° | — | — |
| 1985 | 78° | 52° | 65° | — | — |
| 1984 | 94° | 55° | 74° | — | — |
| 1983 | 97° | 56° | 76° | — | — |
| 1982 | 92° | 52° | 72° | — | — |
| 1981 | 84° | 55° | 70° | — | — |
| 1980 | 91° | 61° | 76° | — | — |
| 1979 | 81° | 54° | 67° | — | — |
| 1978 | 85° | 52° | 68° | — | — |
| 1977 | 82° | 53° | 68° | — | — |
| 1976 | 77° | 55° | 66° | — | — |
| 1975 | 75° | 53° | 64° | — | — |
| 1974 | 76° | 58° | 67° | — | — |
| 1973 | 83° | 54° | 68° | — | — |
| 1972 | 83° | 57° | 70° | — | — |
| 1971 | 85° | 57° | 71° | — | — |
55 years of data from VALLEJO