Weather on August 31
El Cajon, CA
55 Years of Data
Avg High
89°F
Avg Low
65°F
Warmest
2017
87°F avg
Coldest
1992
68°F avg
About This Date
August 31st in El Cajon, CA typically brings warm summer weather, with average highs around 89°F and lows near 65°F. Over 55 years of records, the warmest August 31st was in 2017 (87°F average), while the coldest was 1992 (68°F) — a 19°F range across recorded history. This date has historically been dry, with little recorded precipitation. 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 August 31st in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 96° | 65° | 80° | — | — |
| 2024 | 86° | 62° | 74° | — | — |
| 2023 | 87° | 67° | 77° | — | — |
| 2022 | 101° | 69° | 85° | — | — |
| 2021 | 78° | 68° | 73° | — | — |
| 2020 | 84° | 65° | 74° | — | — |
| 2019 | 95° | 66° | 81° | — | — |
| 2018 | 87° | 61° | 74° | — | — |
| 2017warmest | 102° | 72° | 87° | — | — |
| 2016 | 93° | 65° | 79° | — | — |
| 2015 | 83° | 67° | 75° | — | — |
| 2014 | 91° | 66° | 79° | — | — |
| 2013 | 90° | 78° | 84° | — | — |
| 2012 | 92° | 65° | 78° | — | — |
| 2011 | 88° | 63° | 75° | — | — |
| 2010 | 82° | 56° | 69° | — | — |
| 2009 | 98° | 66° | 82° | — | — |
| 2008 | 86° | 67° | 76° | — | — |
| 2007 | 92° | 69° | 80° | — | — |
| 2006 | 95° | 61° | 78° | — | — |
| 2005 | 74° | 62° | 68° | — | — |
| 2004 | 96° | 60° | 78° | — | — |
| 2003 | 88° | 85° | 86° | — | — |
| 2002 | 106° | 58° | 82° | — | — |
| 2001 | 85° | 80° | 82° | — | — |
| 2000 | 79° | 64° | 71° | — | — |
| 1999 | 76° | 62° | 69° | — | — |
| 1998 | 101° | 72° | 86° | — | — |
| 1997 | 90° | 64° | 77° | — | — |
| 1996 | 95° | 63° | 79° | — | — |
| 1995 | 101° | 67° | 84° | — | — |
| 1994 | 82° | 63° | 72° | — | — |
| 1993 | 81° | 66° | 73° | — | — |
| 1992coldest | 76° | 60° | 68° | — | — |
| 1991 | 87° | 59° | 73° | — | — |
| 1990 | 88° | 60° | 74° | — | — |
| 1989 | 85° | 58° | 71° | — | — |
| 1988 | 92° | 65° | 78° | — | — |
| 1987 | 87° | — | — | — | — |
| 1986 | 80° | 63° | 71° | — | — |
| 1985 | 94° | 73° | 83° | — | — |
| 1984 | 90° | 70° | 80° | — | — |
| 1983 | 96° | 60° | 78° | — | — |
| 1982 | 96° | 59° | 78° | — | — |
| 1981 | 85° | 65° | 75° | — | — |
| 1980 | 88° | 62° | 75° | — | — |
| 1979 | 81° | 59° | 70° | — | — |
| 1978 | 88° | 64° | 76° | — | — |
| 1977 | 81° | 61° | 71° | — | — |
| 1976 | 92° | 66° | 79° | — | — |
| 1975 | 86° | 55° | 71° | — | — |
| 1974 | 89° | 57° | 73° | — | — |
| 1973 | 81° | 62° | 71° | — | — |
| 1972 | 89° | 69° | 79° | — | — |
| 1971 | 88° | 59° | 73° | — | — |
55 years of data from GILLESPIE FLD