Weather on September 23
El Cajon, CA
55 Years of Data
Avg High
86°F
Avg Low
61°F
Warmest
1992
86°F avg
Coldest
1986
61°F avg
About This Date
September 23rd in El Cajon, CA typically brings warm fall weather, with average highs around 86°F and lows near 61°F — a 25°F daily swing. Over 54 years of records, the warmest September 23rd was in 1992 (86°F average), while the coldest was 1986 (61°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 23rd dates historically, with the wettest September 23rd recording 0.51" of rain. 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 September 23rd in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 66° | 79° | — | — |
| 2024 | 88° | 61° | 74° | — | — |
| 2023 | 82° | 63° | 72° | — | — |
| 2022 | 92° | 65° | 78° | — | — |
| 2021 | 91° | 68° | 80° | — | — |
| 2020 | 93° | 59° | 76° | — | — |
| 2019 | 85° | 64° | 74° | — | — |
| 2018 | 84° | 65° | 74° | — | — |
| 2017 | 73° | 55° | 64° | — | — |
| 2016 | 81° | 57° | 69° | — | — |
| 2015 | 90° | 64° | 77° | — | — |
| 2014 | 92° | 61° | 76° | — | — |
| 2013 | 87° | 56° | 71° | — | — |
| 2012 | 97° | 64° | 80° | — | — |
| 2011 | 85° | 60° | 72° | — | — |
| 2010 | 78° | 50° | 64° | — | — |
| 2009 | 102° | 60° | 81° | — | — |
| 2008 | 87° | 57° | 72° | — | — |
| 2007 | 71° | 56° | 63° | — | — |
| 2006 | 80° | 61° | 70° | — | — |
| 2005 | 81° | 60° | 70° | — | — |
| 2004 | 88° | 67° | 77° | — | — |
| 2003 | 89° | 60° | 75° | — | — |
| 2002 | 95° | 62° | 79° | — | — |
| 2001 | 91° | 56° | 73° | — | — |
| 2000 | 77° | 61° | 69° | — | — |
| 1999 | 80° | 63° | 71° | — | — |
| 1998 | 73° | 59° | 66° | — | — |
| 1996 | 83° | 64° | 73° | — | — |
| 1995 | 89° | 59° | 74° | — | — |
| 1994 | 85° | 65° | 75° | — | — |
| 1993 | 83° | — | — | — | — |
| 1992warmest | 100° | 71° | 86° | — | — |
| 1991 | 93° | 66° | 80° | — | — |
| 1990 | 81° | 59° | 70° | — | — |
| 1989 | 88° | 58° | 73° | — | — |
| 1988 | 76° | 54° | 65° | — | — |
| 1987 | 79° | 65° | 72° | 0.51" | — |
| 1986coldest | 71° | 52° | 61° | — | — |
| 1985 | 85° | 58° | 71° | — | — |
| 1984 | 80° | 64° | 72° | — | — |
| 1983 | 86° | 66° | 76° | — | — |
| 1982 | 96° | 61° | 78° | — | — |
| 1981 | 80° | 62° | 71° | — | — |
| 1980 | 82° | 58° | 70° | — | — |
| 1979 | 94° | 62° | 78° | — | — |
| 1978 | 102° | 56° | 79° | — | — |
| 1977 | 81° | 56° | 68° | — | — |
| 1976 | 77° | 65° | 71° | — | — |
| 1975 | 102° | 57° | 80° | — | — |
| 1974 | 94° | 63° | 78° | — | — |
| 1973 | 75° | 61° | 68° | — | — |
| 1972 | 83° | 56° | 69° | — | — |
| 1971 | 89° | 60° | 75° | — | — |
54 years of data from GILLESPIE FLD