Weather on June 21
Vallejo, CA
55 Years of Data
Avg High
85°F
Avg Low
54°F
Warmest
1981
87°F avg
Coldest
2009
60°F avg
About This Date
June 21st in Vallejo, CA typically brings warm summer weather, with average highs around 85°F and lows near 54°F — a 31°F daily swing. Over 55 years of records, the warmest June 21st was in 1981 (87°F average), while the coldest was 2009 (60°F) — a 27°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Vallejo, CA? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 49° | 62° | — | — |
| 2024 | 87° | 51° | 69° | — | — |
| 2023 | 83° | 51° | 67° | — | — |
| 2022 | 104° | 62° | 83° | — | — |
| 2021 | 79° | 56° | 67° | — | — |
| 2020 | 87° | 57° | 72° | — | — |
| 2019 | 75° | 44° | 60° | — | — |
| 2018 | 90° | 51° | 70° | — | — |
| 2017 | 94° | 54° | 74° | — | — |
| 2016 | 98° | 56° | 77° | — | — |
| 2015 | 89° | 54° | 71° | — | — |
| 2014 | 75° | 54° | 64° | — | — |
| 2013 | 82° | 45° | 63° | — | — |
| 2012 | 69° | 53° | 61° | — | — |
| 2011 | 93° | 54° | 73° | — | — |
| 2010 | 77° | 49° | 63° | — | — |
| 2009coldest | 76° | 45° | 60° | — | — |
| 2008 | 100° | 57° | 79° | — | — |
| 2007 | 82° | 50° | 66° | — | — |
| 2006 | 97° | 56° | 76° | — | — |
| 2005 | 76° | 55° | 65° | — | — |
| 2004 | 76° | 54° | 65° | — | — |
| 2003 | 78° | 51° | 65° | — | — |
| 2002 | 75° | 51° | 63° | — | — |
| 2001 | 92° | 54° | 73° | — | — |
| 2000 | 84° | 56° | 70° | — | — |
| 1999 | 82° | 53° | 68° | — | — |
| 1998 | 70° | 53° | 61° | — | — |
| 1997 | 87° | 54° | 70° | — | — |
| 1996 | 81° | 51° | 66° | — | — |
| 1995 | 90° | 57° | 73° | — | — |
| 1994 | 86° | 48° | 67° | — | — |
| 1993 | — | 54° | — | — | — |
| 1992 | 88° | 54° | 71° | — | — |
| 1991 | 78° | 48° | 63° | — | — |
| 1990 | 89° | 59° | 74° | — | — |
| 1989 | 99° | 65° | 82° | — | — |
| 1988 | 86° | 61° | 73° | — | — |
| 1987 | 81° | 53° | 67° | — | — |
| 1986 | 99° | 54° | 76° | — | — |
| 1985 | 80° | 61° | 70° | — | — |
| 1984 | 89° | 46° | 68° | — | — |
| 1983 | 89° | 54° | 71° | — | — |
| 1982 | 77° | 54° | 65° | — | — |
| 1981warmest | 108° | 66° | 87° | — | — |
| 1980 | 80° | 61° | 70° | — | — |
| 1979 | 82° | 49° | 65° | — | — |
| 1978 | 86° | 49° | 67° | — | — |
| 1977 | 85° | 55° | 70° | — | — |
| 1976 | 77° | 53° | 65° | — | — |
| 1975 | 75° | 50° | 63° | — | — |
| 1974 | 83° | 56° | 69° | — | — |
| 1973 | 103° | 62° | 82° | — | — |
| 1972 | 77° | 53° | 65° | — | — |
| 1971 | 84° | 57° | 71° | — | — |
55 years of data from VALLEJO