Weather on October 17
El Cajon, CA
55 Years of Data
Avg High
80°F
Avg Low
56°F
Warmest
2008
82°F avg
Coldest
1971
53°F avg
About This Date
October 17th in El Cajon, CA typically brings warm fall weather, with average highs around 80°F and lows near 56°F. Over 55 years of records, the warmest October 17th was in 2008 (82°F average), while the coldest was 1971 (53°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 7% of October 17th dates historically, with the wettest October 17th recording 1.22" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for October 17th 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 | 83° | 49° | 66° | — | — |
| 2024 | 69° | 62° | 66° | — | — |
| 2023 | 85° | 55° | 70° | — | — |
| 2022 | 79° | 57° | 68° | — | — |
| 2021 | 80° | 50° | 65° | — | — |
| 2020 | 89° | 58° | 73° | — | — |
| 2019 | 76° | 56° | 66° | — | — |
| 2018 | 83° | 50° | 66° | — | — |
| 2017 | 96° | 61° | 78° | — | — |
| 2016 | 75° | 64° | 70° | — | — |
| 2015 | 80° | 69° | 75° | — | — |
| 2014 | 78° | 65° | 71° | 0.03" | — |
| 2013 | 84° | 49° | 66° | — | — |
| 2012 | 102° | 56° | 79° | — | — |
| 2011 | 85° | 55° | 70° | — | — |
| 2010 | 67° | 60° | 63° | — | — |
| 2009 | 96° | 58° | 77° | — | — |
| 2008warmest | 74° | 91° | 82° | — | — |
| 2007 | 69° | 56° | 62° | — | — |
| 2006 | 68° | 56° | 62° | — | — |
| 2005 | 66° | 57° | 62° | 0.56" | — |
| 2004 | 72° | 61° | 66° | — | — |
| 2003 | 95° | 56° | 75° | — | — |
| 2002 | 66° | 57° | 62° | — | — |
| 2001 | 86° | 54° | 70° | — | — |
| 2000 | 82° | 50° | 66° | — | — |
| 1999 | 87° | 53° | 70° | — | — |
| 1998 | 82° | 50° | 66° | — | — |
| 1997 | 95° | 53° | 74° | — | — |
| 1996 | 79° | 52° | 65° | — | — |
| 1995 | 81° | 53° | 67° | — | — |
| 1994 | 76° | 52° | 64° | — | — |
| 1993 | 70° | 57° | 63° | — | — |
| 1992 | 77° | 54° | 65° | — | — |
| 1991 | 83° | 59° | 71° | — | — |
| 1990 | 78° | 62° | 70° | — | — |
| 1989 | 88° | 52° | 70° | — | — |
| 1988 | 85° | 60° | 72° | — | — |
| 1987 | 78° | 62° | 70° | — | — |
| 1986 | 72° | 57° | 64° | — | — |
| 1985 | 74° | 56° | 65° | — | — |
| 1984 | 79° | 58° | 68° | — | — |
| 1983 | 73° | 61° | 67° | — | — |
| 1982 | 89° | 48° | 69° | — | — |
| 1981 | 85° | 47° | 66° | — | — |
| 1980 | 71° | 45° | 58° | — | — |
| 1979 | 76° | 59° | 67° | — | — |
| 1978 | — | 58° | — | — | — |
| 1977 | 81° | 55° | 68° | — | — |
| 1976 | 82° | 58° | 70° | — | — |
| 1975 | 85° | 48° | 66° | — | — |
| 1974 | 94° | 50° | 72° | — | — |
| 1973 | 97° | 51° | 74° | — | — |
| 1972 | 73° | 58° | 65° | 0.51" | — |
| 1971coldest | 60° | 47° | 53° | 1.22" | — |
55 years of data from GILLESPIE FLD