Weather on September 3
El Cajon, CA
55 Years of Data
About This Date
September 3rd in El Cajon, CA typically brings hot fall weather, with average highs around 90°F and lows near 65°F — a 25°F daily swing. Over 54 years of records, the warmest September 3rd was in 2007 (88°F average), while the coldest was 1999 (67°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 6% of September 3rd dates historically, with the wettest September 3rd recording 0.58" of rain. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for September 3rd in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 70° | 81° | — | — |
| 2024 | 94° | 64° | 79° | — | — |
| 2023 | 81° | 70° | 75° | — | — |
| 2022 | 101° | 76° | 88° | — | — |
| 2021 | 85° | 63° | 74° | — | — |
| 2020 | 91° | 64° | 78° | — | — |
| 2019 | 95° | 73° | 84° | — | — |
| 2018 | 81° | 69° | 75° | — | — |
| 2017 | 90° | 80° | 85° | 0.05" | — |
| 2016 | 77° | 64° | 71° | — | — |
| 2015 | 81° | 61° | 71° | — | — |
| 2014 | 84° | 69° | 77° | — | — |
| 2013 | 95° | 73° | 84° | — | — |
| 2012 | 97° | 65° | 81° | — | — |
| 2011 | 88° | 61° | 74° | — | — |
| 2010 | 98° | 59° | 79° | — | — |
| 2009 | 102° | 73° | 88° | — | — |
| 2008 | 96° | 66° | 81° | — | — |
| 2007warmest | 104° | 72° | 88° | — | — |
| 2006 | 100° | 61° | 80° | — | — |
| 2005 | 80° | 58° | 69° | — | — |
| 2004 | 88° | 64° | 76° | — | — |
| 2003 | 89° | 65° | 77° | — | — |
| 2002 | 83° | 63° | 73° | — | — |
| 2001 | 91° | 66° | 79° | — | — |
| 2000 | 85° | 56° | 70° | — | — |
| 1999coldest | 79° | 56° | 67° | — | — |
| 1998 | 95° | 70° | 82° | 0.18" | — |
| 1996 | 90° | 63° | 76° | — | — |
| 1995 | 97° | 71° | 84° | — | — |
| 1994 | 85° | 63° | 74° | — | — |
| 1993 | 92° | 64° | 78° | — | — |
| 1992 | 85° | 63° | 74° | — | — |
| 1991 | 87° | 64° | 76° | — | — |
| 1990 | 88° | 63° | 75° | — | — |
| 1989 | — | 58° | — | — | — |
| 1988 | 109° | 63° | 86° | — | — |
| 1987 | 81° | 65° | 73° | — | — |
| 1986 | 82° | 64° | 73° | — | — |
| 1985 | 76° | 66° | 71° | — | — |
| 1984 | — | 68° | — | — | — |
| 1983 | 97° | 62° | 79° | — | — |
| 1982 | 105° | 68° | 87° | — | — |
| 1981 | 85° | 61° | 73° | — | — |
| 1980 | 89° | 62° | 76° | — | — |
| 1979 | 92° | 58° | 75° | — | — |
| 1978 | 95° | 64° | 80° | — | — |
| 1977 | 89° | 64° | 77° | — | — |
| 1976 | 91° | 69° | 80° | 0.58" | — |
| 1975 | 91° | 60° | 76° | — | — |
| 1974 | 92° | 67° | 79° | — | — |
| 1973 | 81° | 64° | 72° | — | — |
| 1972 | 90° | 63° | 76° | — | — |
| 1971 | 84° | 64° | 74° | — | — |
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.