Weather on December 20
El Cajon, CA
55 Years of Data
Avg High
69°F
Avg Low
41°F
Warmest
2004
62°F avg
Coldest
1992
44°F avg
About This Date
December 20th in El Cajon, CA typically brings mild winter weather, with average highs around 69°F and lows near 41°F — a 28°F daily swing. Over 55 years of records, the warmest December 20th was in 2004 (62°F average), while the coldest was 1992 (44°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 22% of December 20th dates historically, with the wettest December 20th recording 1.78" of rain. 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 December 20th in El Cajon, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 48° | 59° | — | — |
| 2024 | 77° | 43° | 60° | — | — |
| 2023 | 70° | 49° | 59° | — | — |
| 2022 | 69° | 34° | 51° | — | — |
| 2021 | 70° | 35° | 52° | — | — |
| 2020 | 82° | 36° | 59° | — | — |
| 2019 | 78° | 36° | 57° | — | — |
| 2018 | 81° | 41° | 61° | — | — |
| 2017 | 67° | 37° | 52° | — | — |
| 2016 | 80° | 39° | 60° | — | — |
| 2015 | 61° | 46° | 53° | 0.18" | — |
| 2014 | 65° | 45° | 55° | — | — |
| 2013 | 59° | 40° | 49° | 0.2" | — |
| 2012 | 71° | 31° | 51° | — | — |
| 2011 | 66° | 47° | 56° | — | — |
| 2010 | 60° | 51° | 56° | 0.76" | — |
| 2009 | 81° | 41° | 61° | — | — |
| 2008 | 66° | 36° | 51° | — | — |
| 2007 | 64° | 54° | 59° | — | — |
| 2006 | 61° | 40° | 50° | — | — |
| 2005 | 82° | 43° | 62° | — | — |
| 2004warmest | 83° | 41° | 62° | — | — |
| 2003 | 69° | 49° | 59° | — | — |
| 2002 | 58° | 43° | 50° | 0.99" | — |
| 2001 | 73° | 37° | 55° | — | — |
| 2000 | 82° | 37° | 60° | — | — |
| 1999 | 82° | 40° | 61° | — | — |
| 1998 | 55° | 48° | 52° | 0.89" | — |
| 1997 | 70° | 44° | 57° | — | — |
| 1996 | 73° | 34° | 53° | — | — |
| 1995 | 64° | 44° | 54° | 0.15" | — |
| 1994 | 77° | 43° | 60° | — | — |
| 1993 | 71° | 41° | 56° | — | — |
| 1992coldest | 60° | 29° | 44° | — | — |
| 1991 | 70° | 37° | 53° | — | — |
| 1990 | 52° | 46° | 49° | 1.78" | — |
| 1989 | 66° | 38° | 52° | — | — |
| 1988 | 62° | 45° | 53° | 0.41" | — |
| 1987 | 64° | 38° | 51° | — | — |
| 1986 | 64° | 49° | 56° | 1.32" | — |
| 1985 | 80° | 39° | 60° | — | — |
| 1984 | 54° | 49° | 51° | 1.27" | — |
| 1983 | 63° | 48° | 55° | — | — |
| 1982 | 75° | 44° | 60° | — | — |
| 1981 | 69° | 44° | 57° | — | — |
| 1980 | 80° | 39° | 60° | — | — |
| 1979 | 67° | 40° | 53° | — | — |
| 1978 | 62° | 33° | 48° | 0.2" | — |
| 1977 | 70° | 39° | 54° | — | — |
| 1976 | 71° | 40° | 55° | — | — |
| 1975 | 61° | 37° | 49° | 0.13" | — |
| 1974 | 74° | 37° | 55° | — | — |
| 1973 | 74° | 33° | 53° | — | — |
| 1972 | 75° | 45° | 60° | — | — |
| 1971 | 64° | 31° | 47° | — | — |
55 years of data from GILLESPIE FLD