Weather on September 11
El Cajon, CA
55 Years of Data
Avg High
86°F
Avg Low
63°F
Warmest
1971
86°F avg
Coldest
1985
65°F avg
About This Date
September 11th in El Cajon, CA typically brings warm fall weather, with average highs around 86°F and lows near 63°F. Over 53 years of records, the warmest September 11th was in 1971 (86°F average), while the coldest was 1985 (65°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 11th dates historically. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for September 11th in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 65° | 72° | — | — |
| 2024 | 79° | 62° | 70° | — | — |
| 2023 | 90° | 72° | 81° | — | — |
| 2022 | 89° | 72° | 80° | — | — |
| 2021 | 98° | 70° | 84° | — | — |
| 2020 | 91° | 59° | 75° | — | — |
| 2019 | 82° | 65° | 73° | — | — |
| 2018 | 84° | 60° | 72° | — | — |
| 2017 | 94° | 70° | 82° | — | — |
| 2016 | 89° | 64° | 77° | — | — |
| 2015 | 93° | 76° | 84° | — | — |
| 2014 | 93° | 68° | 81° | — | — |
| 2013 | 82° | 64° | 73° | — | — |
| 2012 | 75° | 69° | 72° | — | — |
| 2011 | 79° | 63° | 71° | — | — |
| 2010 | 84° | 58° | 71° | — | — |
| 2009 | 95° | 63° | 79° | — | — |
| 2008 | 88° | 62° | 75° | — | — |
| 2007 | 91° | 62° | 77° | — | — |
| 2006 | 92° | 61° | 76° | — | — |
| 2005 | 71° | 59° | 65° | — | — |
| 2004 | 97° | 70° | 83° | — | — |
| 2003 | 88° | 60° | 74° | — | — |
| 2002 | 91° | 63° | 77° | — | — |
| 2001 | 82° | 62° | 72° | — | — |
| 2000 | 102° | 56° | 79° | — | — |
| 1999 | 86° | 59° | 73° | — | — |
| 1998 | 78° | 62° | 70° | — | — |
| 1995 | 94° | 62° | 78° | — | — |
| 1994 | 81° | 64° | 72° | — | — |
| 1993 | — | 65° | — | — | — |
| 1992 | 82° | 62° | 72° | — | — |
| 1991 | 76° | 55° | 65° | — | — |
| 1990 | 103° | — | — | — | — |
| 1989 | 78° | 57° | 68° | — | — |
| 1988 | 79° | 62° | 70° | — | — |
| 1987 | 79° | 58° | 68° | — | — |
| 1986 | 79° | 59° | 69° | — | — |
| 1985coldest | 74° | 56° | 65° | — | — |
| 1984 | 82° | 70° | 76° | — | — |
| 1983 | 105° | 67° | 86° | — | — |
| 1982 | 80° | 64° | 72° | — | — |
| 1981 | 93° | 60° | 77° | — | — |
| 1980 | 81° | 65° | 73° | — | — |
| 1979 | 101° | 67° | 84° | — | — |
| 1978 | 81° | 64° | 72° | — | — |
| 1977 | 84° | 63° | 73° | — | — |
| 1976 | 76° | 66° | 71° | 0.46" | — |
| 1975 | 75° | 63° | 69° | — | — |
| 1974 | 83° | 63° | 73° | — | — |
| 1973 | 78° | 64° | 71° | — | — |
| 1972 | 77° | 62° | 70° | — | — |
| 1971warmest | 108° | 65° | 86° | — | — |
53 years of data from GILLESPIE FLD