Weather on October 20
El Cajon, CA
55 Years of Data
Avg High
79°F
Avg Low
55°F
Warmest
2003
78°F avg
Coldest
1971
59°F avg
About This Date
October 20th in El Cajon, CA typically brings pleasant fall weather, with average highs around 79°F and lows near 55°F. Over 55 years of records, the warmest October 20th was in 2003 (78°F average), while the coldest was 1971 (59°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 13% of October 20th dates historically, with the wettest October 20th recording 4.32" of rain. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in El Cajon, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 87° | 50° | 69° | — | — |
| 2024 | 86° | 50° | 68° | — | — |
| 2023 | 96° | 58° | 77° | — | — |
| 2022 | 90° | 59° | 74° | — | — |
| 2021 | 76° | 47° | 61° | — | — |
| 2020 | 82° | 60° | 71° | — | — |
| 2019 | 86° | 49° | 67° | — | — |
| 2018 | 89° | 53° | 71° | — | — |
| 2017 | 70° | 62° | 66° | — | — |
| 2016 | 98° | 52° | 75° | — | — |
| 2015 | 77° | 60° | 69° | — | — |
| 2014 | 79° | 59° | 69° | — | — |
| 2013 | 82° | 48° | 65° | — | — |
| 2012 | 74° | 65° | 69° | — | — |
| 2011 | 74° | 58° | 66° | — | — |
| 2010 | 65° | 57° | 61° | 3.68" | — |
| 2009 | 78° | 59° | 69° | 0.03" | — |
| 2008 | 81° | 57° | 69° | — | — |
| 2007 | 71° | 57° | 64° | — | — |
| 2006 | 84° | 60° | 72° | — | — |
| 2005 | 72° | 51° | 61° | — | — |
| 2004 | 67° | 57° | 62° | 4.32" | — |
| 2003warmest | 99° | 57° | 78° | — | — |
| 2002 | 76° | 53° | 64° | — | — |
| 2001 | 85° | 58° | 71° | — | — |
| 2000 | 80° | 59° | 70° | — | — |
| 1999 | 97° | 51° | 74° | — | — |
| 1998 | 75° | 51° | 63° | — | — |
| 1997 | 75° | 61° | 68° | — | — |
| 1996 | 73° | 50° | 62° | — | — |
| 1995 | 85° | 56° | 70° | — | — |
| 1994 | 71° | 53° | 62° | — | — |
| 1993 | 89° | 49° | 69° | — | — |
| 1992 | 75° | 56° | 65° | — | — |
| 1991 | 77° | 58° | 67° | — | — |
| 1990 | 79° | 57° | 68° | — | — |
| 1989 | 76° | 60° | 68° | — | — |
| 1988 | 76° | 64° | 70° | — | — |
| 1987 | 75° | 59° | 67° | — | — |
| 1986 | 75° | 47° | 61° | — | — |
| 1985 | 77° | 50° | 64° | — | — |
| 1984 | 72° | 59° | 65° | — | — |
| 1983 | 83° | — | — | — | — |
| 1982 | 83° | 52° | 67° | — | — |
| 1981 | 84° | 52° | 68° | — | — |
| 1980 | 92° | 46° | 69° | — | — |
| 1979 | 66° | 58° | 62° | 3" | — |
| 1978 | 80° | 61° | 70° | — | — |
| 1977 | 68° | 55° | 62° | 0.36" | — |
| 1976 | 85° | 64° | 74° | — | — |
| 1975 | 73° | 55° | 64° | 0.03" | — |
| 1974 | 76° | 57° | 66° | — | — |
| 1973 | 86° | 53° | 70° | — | — |
| 1972 | 66° | 56° | 61° | 1.27" | — |
| 1971coldest | 75° | 42° | 59° | — | — |
55 years of data from GILLESPIE FLD