Weather on July 21
Vallejo, CA
55 Years of Data
About This Date
July 21st in Vallejo, CA typically brings warm summer weather, with average highs around 84°F and lows near 55°F — a 29°F daily swing. Over 55 years of records, the warmest July 21st was in 1996 (80°F average), while the coldest was 2010 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 2% of July 21st dates historically. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for July 21st in Vallejo, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 56° | 65° | — | — |
| 2024 | 88° | 55° | 71° | — | — |
| 2023 | 99° | 57° | 78° | — | — |
| 2022 | 87° | 52° | 69° | — | — |
| 2021 | 89° | 54° | 71° | — | — |
| 2020 | 81° | 56° | 68° | — | — |
| 2019 | 86° | 55° | 71° | — | — |
| 2018 | 87° | 60° | 74° | — | — |
| 2017 | 90° | 56° | 73° | — | — |
| 2016 | 86° | 53° | 70° | — | — |
| 2015 | 89° | 59° | 74° | — | — |
| 2014 | 76° | 59° | 67° | — | — |
| 2013 | 75° | 54° | 64° | — | — |
| 2012 | 94° | 52° | 73° | — | — |
| 2011 | 80° | 57° | 69° | — | — |
| 2010coldest | 65° | 52° | 58° | — | — |
| 2009 | 73° | 51° | 62° | — | — |
| 2008 | 70° | 52° | 61° | — | — |
| 2007 | 86° | 55° | 71° | — | — |
| 2006 | 94° | 63° | 78° | — | — |
| 2005 | 79° | 57° | 68° | — | — |
| 2004 | 85° | 58° | 71° | — | — |
| 2003 | 86° | 57° | 72° | — | — |
| 2002 | 73° | 56° | 64° | — | — |
| 2001 | 72° | 54° | 63° | — | — |
| 2000 | 79° | 54° | 66° | — | — |
| 1999 | 75° | 57° | 66° | — | — |
| 1998 | 76° | 56° | 66° | — | — |
| 1997 | 91° | 56° | 73° | — | — |
| 1996warmest | 100° | 60° | 80° | — | — |
| 1995 | 83° | 56° | 69° | — | — |
| 1994 | 79° | 55° | 67° | — | — |
| 1993 | 87° | 53° | 70° | — | — |
| 1992 | 88° | 54° | 71° | — | — |
| 1991 | 87° | 54° | 70° | — | — |
| 1990 | 92° | 53° | 72° | — | — |
| 1989 | 95° | 54° | 74° | — | — |
| 1988 | 90° | 52° | 71° | — | — |
| 1987 | 78° | 51° | 65° | — | — |
| 1986 | 91° | 54° | 72° | — | — |
| 1985 | 90° | 53° | 71° | 0.03" | — |
| 1984 | 77° | 55° | 66° | — | — |
| 1983 | 94° | 54° | 74° | — | — |
| 1982 | 89° | 51° | 70° | — | — |
| 1981 | 92° | 52° | 72° | — | — |
| 1980 | 92° | 56° | 74° | — | — |
| 1979 | 76° | 56° | 66° | — | — |
| 1978 | 96° | 51° | 74° | — | — |
| 1977 | 92° | 53° | 72° | — | — |
| 1976 | 83° | 56° | 69° | — | — |
| 1975 | 80° | 54° | 67° | — | — |
| 1974 | 77° | 54° | 65° | — | — |
| 1973 | 73° | 49° | 61° | — | — |
| 1972 | 69° | 59° | 64° | — | — |
| 1971 | 85° | 57° | 71° | — | — |
Vallejo, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Vallejo, CA Monthly Precipitation
Average rainfall per month, in inches.
Vallejo, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Vallejo, CA
Vallejo, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.