Weather on September 27
El Cajon, CA
55 Years of Data
Avg High
84°F
Avg Low
60°F
Warmest
2010
89°F avg
Coldest
1986
61°F avg
About This Date
September 27th in El Cajon, CA typically brings warm fall weather, with average highs around 84°F and lows near 60°F. Over 53 years of records, the warmest September 27th was in 2010 (89°F average), while the coldest was 1986 (61°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 27th 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 September 27th 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 | 76° | 66° | 71° | — | — |
| 2024 | 84° | 58° | 71° | — | — |
| 2023 | 86° | 54° | 70° | — | — |
| 2022 | 96° | 64° | 80° | — | — |
| 2021 | 69° | 62° | 66° | — | — |
| 2020 | 82° | 62° | 72° | — | — |
| 2019 | 75° | 67° | 71° | — | — |
| 2018 | 89° | 60° | 75° | — | — |
| 2017 | 88° | 54° | 71° | — | — |
| 2016 | 94° | 76° | 85° | — | — |
| 2015 | 93° | 66° | 80° | — | — |
| 2014 | 78° | 62° | 70° | — | — |
| 2013 | 83° | 51° | 67° | — | — |
| 2012 | 88° | 59° | 73° | — | — |
| 2011 | 82° | 57° | 70° | — | — |
| 2010warmest | 109° | 68° | 89° | — | — |
| 2009 | 91° | 61° | 76° | — | — |
| 2008 | 95° | 62° | 79° | — | — |
| 2007 | 75° | 60° | 68° | — | — |
| 2006 | 90° | 55° | 72° | — | — |
| 2005 | 87° | 62° | 75° | — | — |
| 2004 | 82° | 60° | 71° | — | — |
| 2003 | 84° | 61° | 72° | — | — |
| 2002 | 78° | 61° | 69° | — | — |
| 2001 | 94° | 58° | 76° | — | — |
| 2000 | 78° | 64° | 71° | — | — |
| 1999 | 76° | 60° | 68° | — | — |
| 1998 | 74° | 57° | 65° | — | — |
| 1995 | 77° | 62° | 70° | — | — |
| 1994 | 94° | 65° | 79° | — | — |
| 1993 | 100° | 54° | 77° | — | — |
| 1992 | 95° | 60° | 78° | — | — |
| 1991 | 85° | 64° | 74° | — | — |
| 1990 | 78° | 62° | 70° | — | — |
| 1989 | 82° | 63° | 72° | — | — |
| 1988 | 82° | 52° | 67° | — | — |
| 1987 | 82° | 62° | 72° | — | — |
| 1986coldest | 72° | 50° | 61° | — | — |
| 1985 | 79° | 65° | 72° | — | — |
| 1984 | 90° | 67° | 78° | — | — |
| 1983 | 81° | 60° | 70° | — | — |
| 1982 | 71° | 59° | 65° | 0.2" | — |
| 1981 | 86° | 59° | 73° | — | — |
| 1980 | 87° | 60° | 74° | — | — |
| 1979 | 86° | 60° | 73° | — | — |
| 1978 | — | 62° | — | — | — |
| 1977 | 81° | 66° | 73° | — | — |
| 1976 | 80° | 63° | 71° | — | — |
| 1975 | 87° | 55° | 71° | — | — |
| 1974 | 73° | 62° | 68° | — | — |
| 1973 | 98° | 52° | 75° | — | — |
| 1972 | 81° | 63° | 72° | — | — |
| 1971 | 74° | 50° | 62° | — | — |
53 years of data from GILLESPIE FLD