Weather on December 17
El Cajon, CA
55 Years of Data
About This Date
December 17th 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 17th was in 1998 (66°F average), while the coldest was 1971 (45°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 15% of December 17th dates historically, with the wettest December 17th recording 5.59" of rain. The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for December 17th in El Cajon, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 44° | 59° | — | — |
| 2024 | 78° | 40° | 59° | — | — |
| 2023 | 76° | 39° | 57° | — | — |
| 2022 | 67° | 32° | 49° | — | — |
| 2021 | 69° | 46° | 58° | — | — |
| 2020 | 65° | 39° | 52° | — | — |
| 2019 | 70° | 34° | 52° | — | — |
| 2018 | 68° | 50° | 59° | — | — |
| 2017 | 74° | 42° | 58° | — | — |
| 2016 | 61° | 41° | 51° | — | — |
| 2015 | 69° | 34° | 51° | — | — |
| 2014 | 64° | 53° | 59° | 1.3" | — |
| 2013 | 81° | 48° | 64° | — | — |
| 2012 | 63° | 53° | 58° | 0.13" | — |
| 2011 | 67° | 39° | 53° | — | — |
| 2010 | 64° | 44° | 54° | 0.03" | — |
| 2009 | 78° | 39° | 59° | — | — |
| 2008 | 57° | 48° | 53° | 5.59" | — |
| 2007 | 65° | 38° | 51° | — | — |
| 2006 | 57° | 44° | 51° | — | — |
| 2005 | 61° | 47° | 54° | — | — |
| 2004 | 80° | 38° | 59° | — | — |
| 2003 | 76° | 34° | 55° | — | — |
| 2002 | 60° | 51° | 56° | 2.29" | — |
| 2001 | 69° | 33° | 51° | — | — |
| 2000 | 82° | 39° | 61° | — | — |
| 1999 | 84° | 40° | 62° | — | — |
| 1998warmest | 84° | 48° | 66° | — | — |
| 1997 | 72° | 45° | 58° | — | — |
| 1996 | 76° | 40° | 58° | — | — |
| 1995 | 69° | 41° | 55° | — | — |
| 1994 | 72° | 33° | 52° | — | — |
| 1993 | 65° | 35° | 50° | — | — |
| 1992 | 60° | 38° | 49° | — | — |
| 1991 | 60° | 43° | 51° | 0.13" | — |
| 1990 | 62° | 37° | 50° | — | — |
| 1989 | 68° | 36° | 52° | — | — |
| 1988 | 61° | 47° | 54° | — | — |
| 1987 | 60° | 45° | 52° | 3.05" | — |
| 1986 | 70° | 44° | 57° | — | — |
| 1985 | 77° | 38° | 57° | — | — |
| 1984 | 59° | 32° | 46° | — | — |
| 1983 | 61° | 52° | 56° | — | — |
| 1982 | 69° | 41° | 55° | — | — |
| 1981 | 77° | 38° | 57° | — | — |
| 1980 | 80° | 46° | 63° | — | — |
| 1979 | 81° | 33° | 57° | — | — |
| 1978 | 57° | 50° | 54° | 2.92" | — |
| 1977 | 70° | 40° | 55° | — | — |
| 1976 | 73° | 35° | 54° | — | — |
| 1975 | 69° | 31° | 50° | — | — |
| 1974 | 74° | 39° | 56° | — | — |
| 1973 | 73° | 39° | 56° | — | — |
| 1972 | 68° | 39° | 54° | — | — |
| 1971coldest | 62° | 29° | 45° | — | — |
El Cajon, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
El Cajon, CA Monthly Precipitation
Average rainfall per month, in inches.
El Cajon, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit El Cajon, CA
El Cajon, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.