Weather on August 15
El Cajon, CA
55 Years of Data
Avg High
87°F
Avg Low
65°F
Warmest
2015
86°F avg
Coldest
1976
68°F avg
About This Date
August 15th in El Cajon, CA typically brings warm summer weather, with average highs around 87°F and lows near 65°F. Over 55 years of records, the warmest August 15th was in 2015 (86°F average), while the coldest was 1976 (68°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 15th dates historically. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 62° | 69° | — | — |
| 2024 | 90° | 61° | 75° | — | — |
| 2023 | 93° | 65° | 79° | — | — |
| 2022 | 90° | 70° | 80° | — | — |
| 2021 | 89° | 68° | 79° | — | — |
| 2020 | 99° | 74° | 86° | — | — |
| 2019 | 95° | 63° | 79° | — | — |
| 2018 | 85° | 70° | 77° | — | — |
| 2017 | 76° | 64° | 70° | — | — |
| 2016 | 103° | 70° | 86° | — | — |
| 2015warmest | 103° | 70° | 86° | — | — |
| 2014 | 95° | 68° | 82° | — | — |
| 2013 | 86° | 62° | 74° | — | — |
| 2012 | 91° | 68° | 80° | — | — |
| 2011 | 82° | 65° | 73° | — | — |
| 2010 | 89° | 57° | 73° | — | — |
| 2009 | 80° | 64° | 72° | — | — |
| 2008 | 91° | 65° | 78° | — | — |
| 2007 | 85° | 67° | 76° | — | — |
| 2006 | 89° | 63° | 76° | — | — |
| 2005 | 74° | 63° | 68° | — | — |
| 2004 | 87° | 64° | 76° | — | — |
| 2003 | 94° | 72° | 83° | — | — |
| 2002 | 83° | 62° | 72° | — | — |
| 2001 | 94° | 67° | 80° | — | — |
| 2000 | 90° | 66° | 78° | — | — |
| 1999 | 85° | 58° | 71° | — | — |
| 1998 | 82° | 66° | 74° | — | — |
| 1997 | 83° | 66° | 74° | — | — |
| 1996 | 94° | 68° | 81° | — | — |
| 1995 | 84° | 63° | 73° | — | — |
| 1994 | 95° | 69° | 82° | — | — |
| 1993 | 80° | 63° | 71° | — | — |
| 1992 | 98° | 72° | 85° | — | — |
| 1991 | 84° | 65° | 74° | — | — |
| 1990 | 78° | 66° | 72° | — | — |
| 1989 | 86° | 65° | 75° | — | — |
| 1988 | 84° | 56° | 70° | — | — |
| 1987 | 77° | 61° | 69° | — | — |
| 1986 | 86° | 64° | 75° | — | — |
| 1985 | 86° | 60° | 73° | — | — |
| 1984 | 89° | 69° | 79° | — | — |
| 1983 | 92° | 69° | 80° | — | — |
| 1982 | 85° | 62° | 73° | — | — |
| 1981 | 94° | 67° | 80° | — | — |
| 1980 | 83° | 66° | 74° | — | — |
| 1979 | 82° | 63° | 72° | — | — |
| 1978 | 90° | 66° | 78° | — | — |
| 1977 | 90° | 61° | 75° | 0.2" | — |
| 1976coldest | 77° | 59° | 68° | — | — |
| 1975 | 83° | 62° | 72° | — | — |
| 1974 | 83° | 59° | 71° | — | — |
| 1973 | 84° | 63° | 73° | — | — |
| 1972 | 82° | 64° | 73° | — | — |
| 1971 | 88° | 67° | 77° | — | — |
55 years of data from GILLESPIE FLD