Weather on August 9
El Cajon, CA
55 Years of Data
Avg High
88°F
Avg Low
64°F
Warmest
2018
85°F avg
Coldest
2010
66°F avg
About This Date
August 9th in El Cajon, CA typically brings warm summer weather, with average highs around 88°F and lows near 64°F. Over 55 years of records, the warmest August 9th was in 2018 (85°F average), while the coldest was 2010 (66°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 9th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 9th in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 65° | 75° | — | — |
| 2024 | 88° | 67° | 77° | — | — |
| 2023 | 86° | 66° | 76° | — | — |
| 2022 | 93° | 70° | 81° | 0.05" | — |
| 2021 | 90° | 63° | 76° | — | — |
| 2020 | 89° | 63° | 76° | — | — |
| 2019 | 88° | 59° | 73° | — | — |
| 2018warmest | 97° | 74° | 85° | — | — |
| 2017 | 89° | 65° | 77° | — | — |
| 2016 | 83° | 63° | 73° | — | — |
| 2015 | 81° | 63° | 72° | — | — |
| 2014 | 84° | 65° | 74° | — | — |
| 2013 | 85° | 59° | 72° | — | — |
| 2012 | 95° | 61° | 78° | — | — |
| 2011 | 80° | 59° | 70° | — | — |
| 2010coldest | 78° | 54° | 66° | — | — |
| 2009 | 83° | 61° | 72° | — | — |
| 2008 | 90° | 65° | 77° | — | — |
| 2007 | 77° | 64° | 71° | — | — |
| 2006 | 94° | 61° | 77° | — | — |
| 2005 | 84° | 63° | 73° | — | — |
| 2004 | 94° | 66° | 80° | — | — |
| 2003 | 97° | 67° | 82° | — | — |
| 2002 | 94° | 62° | 78° | — | — |
| 2001 | 91° | 64° | 78° | — | — |
| 2000 | 98° | — | — | — | — |
| 1999 | 80° | 60° | 70° | — | — |
| 1998 | 95° | 63° | 79° | — | — |
| 1997 | 82° | 65° | 73° | — | — |
| 1996 | 90° | 62° | 76° | — | — |
| 1995 | 91° | 65° | 78° | — | — |
| 1994 | 95° | 68° | 82° | — | — |
| 1993 | 91° | 65° | 78° | — | — |
| 1992 | 92° | 68° | 80° | — | — |
| 1991 | 86° | 63° | 74° | — | — |
| 1990 | 88° | 70° | 79° | — | — |
| 1989 | — | 65° | — | — | — |
| 1988 | 83° | 61° | 72° | — | — |
| 1987 | 86° | 64° | 75° | — | — |
| 1986 | 85° | 64° | 74° | — | — |
| 1985 | 83° | 62° | 72° | — | — |
| 1984 | 82° | 64° | 73° | — | — |
| 1983 | 92° | 73° | 82° | — | — |
| 1982 | 98° | 63° | 80° | — | — |
| 1981 | 91° | 67° | 79° | — | — |
| 1980 | 92° | 64° | 78° | — | — |
| 1979 | 93° | 65° | 79° | — | — |
| 1978 | 88° | 64° | 76° | — | — |
| 1977 | 84° | 64° | 74° | — | — |
| 1976 | 86° | 61° | 73° | — | — |
| 1975 | 77° | 63° | 70° | — | — |
| 1974 | 79° | 62° | 70° | — | — |
| 1973 | 87° | 61° | 74° | — | — |
| 1972 | 83° | 65° | 74° | — | — |
| 1971 | 93° | 68° | 81° | — | — |
55 years of data from GILLESPIE FLD