Weather on June 21
San Ramon, CA
55 Years of Data
Avg High
80°F
Avg Low
56°F
Warmest
1981
86°F avg
Coldest
2009
52°F avg
About This Date
June 21st in San Ramon, CA typically brings warm summer weather, with average highs around 80°F and lows near 56°F. Over 55 years of records, the warmest June 21st was in 1981 (86°F average), while the coldest was 2009 (52°F) — a 34°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in San Ramon, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 46° | 55° | — | — |
| 2024 | 79° | 63° | 71° | — | — |
| 2023 | 67° | 52° | 59° | — | — |
| 2022 | 88° | 65° | 76° | — | — |
| 2021 | 89° | 64° | 77° | — | — |
| 2020 | 79° | 60° | 69° | — | — |
| 2019 | 72° | 53° | 62° | — | — |
| 2018 | 76° | 57° | 66° | — | — |
| 2017 | 90° | 71° | 80° | — | — |
| 2016 | 84° | 69° | 77° | — | — |
| 2015 | 85° | 55° | 70° | — | — |
| 2014 | 83° | 60° | 71° | — | — |
| 2013 | 73° | 46° | 60° | — | — |
| 2012 | 86° | 46° | 66° | — | — |
| 2011 | 89° | 71° | 80° | — | — |
| 2010 | 73° | 53° | 63° | — | — |
| 2009coldest | 63° | 42° | 52° | — | — |
| 2008 | 98° | 68° | 83° | — | — |
| 2007 | 77° | 50° | 64° | — | — |
| 2006 | 100° | 63° | 81° | — | — |
| 2005 | 74° | 52° | 63° | — | — |
| 2004 | 77° | 53° | 65° | — | — |
| 2003 | 75° | 50° | 63° | — | — |
| 2002 | 65° | 51° | 58° | — | — |
| 2001 | 100° | 63° | 81° | — | — |
| 2000 | 93° | 61° | 77° | — | — |
| 1999 | 77° | 52° | 64° | — | — |
| 1998 | 70° | 53° | 61° | — | — |
| 1997 | 78° | 51° | 65° | — | — |
| 1996 | 70° | 49° | 59° | — | — |
| 1995 | 85° | 54° | 69° | — | — |
| 1994 | 80° | 48° | 64° | — | — |
| 1993 | 70° | 51° | 60° | — | — |
| 1992 | 89° | 68° | 79° | — | — |
| 1991 | 65° | 46° | 55° | — | — |
| 1990 | 88° | 56° | 72° | — | — |
| 1989 | 81° | 66° | 73° | — | — |
| 1988 | 78° | 47° | 62° | — | — |
| 1987 | 72° | 52° | 62° | — | — |
| 1986 | 80° | 60° | 70° | — | — |
| 1985 | 79° | 65° | 72° | — | — |
| 1984 | 70° | 49° | 59° | — | — |
| 1983 | 79° | 57° | 68° | — | — |
| 1982 | 75° | 56° | 65° | — | — |
| 1981warmest | 96° | 76° | 86° | — | — |
| 1980 | 69° | 47° | 58° | — | — |
| 1979 | 86° | 53° | 70° | — | — |
| 1978 | 75° | 48° | 62° | — | — |
| 1977 | 81° | 61° | 71° | — | — |
| 1976 | — | 45° | — | — | — |
| 1975 | 79° | 43° | 61° | — | — |
| 1974 | 83° | 47° | 65° | — | — |
| 1973 | 100° | 59° | 80° | — | — |
| 1972 | 87° | 62° | 75° | — | — |
| 1971 | 88° | 54° | 71° | — | — |
55 years of data from LIVERMORE CALIFORNIA