Weather on December 9
El Cajon, CA
55 Years of Data
Avg High
70°F
Avg Low
42°F
Warmest
2014
68°F avg
Coldest
1978
43°F avg
About This Date
December 9th in El Cajon, CA typically brings pleasant winter weather, with average highs around 70°F and lows near 42°F — a 28°F daily swing. Over 54 years of records, the warmest December 9th was in 2014 (68°F average), while the coldest was 1978 (43°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 13% of December 9th dates historically, with the wettest December 9th recording 0.86" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for December 9th in El Cajon, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 42° | 63° | — | — |
| 2024 | 69° | 43° | 56° | — | — |
| 2023 | 75° | 38° | 56° | — | — |
| 2022 | 63° | 37° | 50° | — | — |
| 2021 | 61° | 52° | 56° | 0.43" | — |
| 2020 | 75° | 45° | 60° | — | — |
| 2019 | 66° | 49° | 57° | 0.86" | — |
| 2018 | 76° | 44° | 60° | — | — |
| 2017 | 83° | 40° | 61° | — | — |
| 2016 | 69° | 45° | 57° | — | — |
| 2015 | 80° | 46° | 63° | — | — |
| 2014warmest | 81° | 55° | 68° | — | — |
| 2013 | 62° | 33° | 48° | — | — |
| 2012 | 72° | 47° | 59° | 0.05" | — |
| 2011 | 69° | 34° | 51° | — | — |
| 2010 | 74° | 40° | 57° | — | — |
| 2009 | 61° | 41° | 51° | — | — |
| 2008 | 72° | 46° | 59° | — | — |
| 2007 | 61° | 40° | 50° | — | — |
| 2006 | 68° | 50° | 59° | — | — |
| 2005 | 76° | 41° | 58° | — | — |
| 2004 | 69° | 49° | 59° | — | — |
| 2003 | 73° | 41° | 57° | — | — |
| 2002 | 72° | 46° | 59° | — | — |
| 2001 | 68° | 35° | 52° | — | — |
| 2000 | 68° | 54° | 61° | — | — |
| 1999 | 67° | 36° | 51° | — | — |
| 1997 | 63° | 44° | 53° | — | — |
| 1996 | 64° | 43° | 53° | 0.51" | — |
| 1995 | 77° | 41° | 59° | — | — |
| 1994 | 65° | 29° | 47° | — | — |
| 1993 | 67° | 38° | 52° | — | — |
| 1992 | 64° | 40° | 52° | — | — |
| 1991 | 71° | 54° | 62° | 0.25" | — |
| 1990 | 82° | 37° | 60° | — | — |
| 1989 | 77° | 39° | 58° | — | — |
| 1988 | 73° | 58° | 65° | — | — |
| 1987 | 79° | 44° | 61° | — | — |
| 1986 | 65° | 39° | 52° | — | — |
| 1985 | 61° | 42° | 51° | — | — |
| 1984 | 71° | 45° | 58° | — | — |
| 1983 | 67° | 38° | 52° | — | — |
| 1982 | 65° | 54° | 59° | 0.46" | — |
| 1981 | 79° | 41° | 60° | — | — |
| 1980 | 70° | 35° | 52° | — | — |
| 1979 | 76° | 41° | 58° | — | — |
| 1978coldest | 62° | 25° | 43° | — | — |
| 1977 | 66° | 49° | 57° | — | — |
| 1976 | 66° | 33° | 50° | — | — |
| 1975 | 81° | 39° | 60° | — | — |
| 1974 | 70° | 38° | 54° | — | — |
| 1973 | 81° | 37° | 59° | — | — |
| 1972 | 51° | 39° | 45° | 0.15" | — |
| 1971 | 57° | 34° | 45° | — | — |
54 years of data from GILLESPIE FLD