Weather on June 21
San Diego, CA
55 Years of Data
Avg High
72°F
Avg Low
63°F
Warmest
2008
80°F avg
Coldest
1999
60°F avg
About This Date
June 21st in San Diego, CA typically brings pleasant summer weather, with average highs around 72°F and lows near 63°F. Over 55 years of records, the warmest June 21st was in 2008 (80°F average), while the coldest was 1999 (60°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 4% of June 21st dates historically. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 62° | 65° | — | — |
| 2024 | 73° | 64° | 69° | — | — |
| 2023 | 73° | 60° | 67° | — | — |
| 2022 | 73° | 65° | 69° | — | — |
| 2021 | 75° | 65° | 70° | — | — |
| 2020 | 69° | 65° | 67° | — | — |
| 2019 | 69° | 61° | 65° | 0.03" | — |
| 2018 | 70° | 63° | 66° | — | — |
| 2017 | 74° | 63° | 68° | — | — |
| 2016 | 75° | 66° | 71° | — | — |
| 2015 | 75° | 65° | 70° | — | — |
| 2014 | 73° | 64° | 69° | — | — |
| 2013 | 70° | 64° | 67° | — | — |
| 2012 | 70° | 63° | 66° | — | — |
| 2011 | 73° | 63° | 68° | — | — |
| 2010 | 65° | 58° | 61° | — | — |
| 2009 | 70° | 62° | 66° | — | — |
| 2008warmest | 92° | 68° | 80° | — | — |
| 2007 | 70° | 61° | 65° | — | — |
| 2006 | 74° | 67° | 70° | — | — |
| 2005 | 76° | 64° | 70° | — | — |
| 2004 | 68° | 64° | 66° | — | — |
| 2003 | 64° | 60° | 62° | — | — |
| 2002 | 68° | 61° | 64° | — | — |
| 2001 | 74° | 65° | 69° | — | — |
| 2000 | 71° | 66° | 69° | — | — |
| 1999coldest | 63° | 58° | 60° | — | — |
| 1998 | 72° | 63° | 67° | — | — |
| 1997 | 71° | 63° | 67° | — | — |
| 1996 | 70° | 64° | 67° | — | — |
| 1995 | 69° | 59° | 64° | — | — |
| 1994 | 75° | 63° | 69° | — | — |
| 1993 | 74° | 65° | 69° | — | — |
| 1992 | 73° | 62° | 68° | — | — |
| 1991 | 68° | 59° | 64° | — | — |
| 1990 | 72° | 63° | 67° | — | — |
| 1989 | 72° | 63° | 67° | — | — |
| 1988 | 72° | 58° | 65° | — | — |
| 1987 | 69° | 62° | 66° | — | — |
| 1986 | 71° | 62° | 67° | — | — |
| 1985 | 72° | 66° | 69° | — | — |
| 1984 | 71° | 66° | 69° | — | — |
| 1983 | 72° | 66° | 69° | — | — |
| 1982 | 67° | 63° | 65° | 0.03" | — |
| 1981 | 79° | 69° | 74° | — | — |
| 1980 | 73° | 60° | 67° | — | — |
| 1979 | 72° | 63° | 67° | — | — |
| 1978 | 85° | 67° | 76° | — | — |
| 1977 | 67° | 61° | 64° | — | — |
| 1976 | 74° | 65° | 69° | — | — |
| 1975 | 71° | 59° | 65° | — | — |
| 1974 | 71° | 61° | 66° | — | — |
| 1973 | 88° | 68° | 78° | — | — |
| 1972 | 70° | 64° | 67° | — | — |
| 1971 | 70° | 62° | 66° | — | — |
55 years of data from SAN DIEGO INTL AP