Weather on June 21
El Cajon, CA
55 Years of Data
Avg High
82°F
Avg Low
59°F
Warmest
1973
80°F avg
Coldest
2003
62°F avg
About This Date
June 21st in El Cajon, CA typically brings warm summer weather, with average highs around 82°F and lows near 59°F. Over 55 years of records, the warmest June 21st was in 1973 (80°F average), while the coldest was 2003 (62°F) — a 18°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 60° | 66° | — | — |
| 2024 | 86° | 59° | 73° | — | — |
| 2023 | 80° | 54° | 67° | — | — |
| 2022 | 89° | 60° | 75° | — | — |
| 2021 | 85° | 60° | 72° | — | — |
| 2020 | 79° | 64° | 71° | — | — |
| 2019 | 72° | 61° | 66° | — | — |
| 2018 | 83° | 64° | 73° | — | — |
| 2017 | 92° | 60° | 76° | — | — |
| 2016 | 87° | 69° | 78° | — | — |
| 2015 | 84° | 62° | 73° | — | — |
| 2014 | 85° | 59° | 72° | — | — |
| 2013 | 80° | 59° | 70° | — | — |
| 2012 | 81° | 60° | 70° | — | — |
| 2011 | 89° | 58° | 73° | — | — |
| 2010 | 76° | 55° | 65° | — | — |
| 2009 | 77° | 61° | 69° | — | — |
| 2008 | 87° | 58° | 72° | — | — |
| 2007 | 89° | 59° | 74° | — | — |
| 2006 | 84° | 62° | 73° | — | — |
| 2005 | 88° | 61° | 74° | — | — |
| 2004 | 75° | 61° | 68° | — | — |
| 2003coldest | 66° | 57° | 62° | — | — |
| 2002 | 76° | 59° | 67° | — | — |
| 2001 | 92° | 57° | 74° | — | — |
| 2000 | 83° | 62° | 72° | — | — |
| 1999 | 78° | 58° | 68° | — | — |
| 1998 | 87° | 67° | 77° | — | — |
| 1997 | 80° | 61° | 70° | — | — |
| 1996 | 84° | 57° | 71° | — | — |
| 1995 | 76° | 54° | 65° | — | — |
| 1994 | 82° | 62° | 72° | — | — |
| 1993 | 83° | 64° | 73° | — | — |
| 1992 | 81° | 60° | 70° | — | — |
| 1991 | 76° | 55° | 65° | — | — |
| 1990 | 86° | 58° | 72° | — | — |
| 1989 | 88° | 58° | 73° | — | — |
| 1988 | 80° | 54° | 67° | — | — |
| 1987 | 76° | 60° | 68° | — | — |
| 1986 | 80° | 57° | 69° | — | — |
| 1985 | 78° | 61° | 69° | — | — |
| 1984 | 81° | 57° | 69° | — | — |
| 1983 | 80° | 60° | 70° | — | — |
| 1982 | 67° | 59° | 63° | — | — |
| 1981 | 90° | 63° | 76° | — | — |
| 1980 | 85° | 57° | 71° | — | — |
| 1979 | 81° | 58° | 69° | — | — |
| 1978 | 101° | 60° | 80° | — | — |
| 1977 | 77° | 59° | 68° | — | — |
| 1976 | 86° | 59° | 73° | — | — |
| 1975 | 80° | 50° | 65° | — | — |
| 1974 | 86° | 53° | 70° | — | — |
| 1973warmest | 100° | 59° | 80° | — | — |
| 1972 | 72° | 64° | 68° | — | — |
| 1971 | 92° | 59° | 75° | — | — |
55 years of data from GILLESPIE FLD