Historical Weather in El Cajon, CA
See 55+ years of weather history for any date in El Cajon going back to 1970.
Part of California weather history · California temperature records
Look Up a Specific Date
Today in El Cajon Weather HistorySee records, averages, and 55+ years of data for today's date
→Trending Now
Monthly Climate Averages
Historical temperature and precipitation averages for El Cajon, CA, based on 55+ years of weather data.
Warmest MonthAugustAvg High: 87°F / Low: 64°F
Coldest MonthDecemberAvg High: 69°F / Low: 43°F
Jan
69°/ 43°
💧 10.4"
Feb
70°/ 45°
💧 9.9"
Mar
71°/ 48°
💧 9.6"
Apr
74°/ 51°
💧 5.6"
May
76°/ 55°
💧 3.7"
Jun
80°/ 59°
💧 2.8"
Jul
86°/ 63°
💧 5.0"
Aug
87°/ 64°
💧 4.5"
Sep
86°/ 62°
💧 4.3"
Oct
80°/ 56°
💧 6.8"
Nov
74°/ 47°
💧 8.8"
Dec
69°/ 43°
💧 8.0"
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
El Cajon, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Avg high Avg low
El Cajon, CA Monthly Precipitation
Average rainfall per month, in inches.
Rain (in)
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.
Cooler
Hotter
20°40°60°80°100°
Best Time to Visit El Cajon, CA
El Cajon, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pleasant (65-82°F, ≤2.5" rain) Mild Less ideal
El Cajon Temperature Records
- Record High: The hottest temperature ever recorded in El Cajon, CA is 114°F, set on September 5, 2020.
- Record Low: The coldest temperature ever recorded in El Cajon, CA is 20°F, set on February 16, 2004.
- Data Coverage: Based on 47 years of data from NOAA weather station: EL CAJON.
All-Time Record High
114°F
September 5, 2020
All-Time Record Low
20°F
February 16, 2004
Monthly Temperature Records in El Cajon
| Month | Record High | Record Low |
|---|---|---|
| January | 93°F(2021) | 25°F(1971) |
| February | 95°F(2002) | 20°F(2004) |
| March | 102°F(1988) | 29°F(2002) |
| April | 104°F(1989) | 30°F(2004) |
| May | 104°F(1984) | 37°F(2002) |
| June | 109°F(1976) | 40°F(1971) |
| July | 113°F(2006) | 40°F(1977) |
| August | 108°F(1981) | 40°F(1976) |
| September | 114°F(2020) | 42°F(1970) |
| October | 108°F(1987) | 30°F(1971) |
| November | 99°F(2008) | 28°F(1971) |
| December | 93°F(1979) | 24°F(1974) |
El Cajon Snow RecordsSee the top 10 snowiest days ever recorded
→National Parks in California
Channel Islands National ParkWeather records & best time to visitDeath Valley National ParkWeather records & best time to visitJoshua Tree National ParkWeather records & best time to visitKings Canyon National ParkWeather records & best time to visitLassen Volcanic National ParkWeather records & best time to visitPinnacles National ParkWeather records & best time to visit
Holiday Weather in El Cajon
Weather Analysis & Trends
RecordsHottest Temperatures Ever Recorded in Every US StateAll 50 state record highs ranked, including California.Severe WeatherTornado Season 2026: Forecasts & What to ExpectAn EF5 already, and the peak still ahead.Climate ForecastEl Niño 2026: What Every US Region Should Expect85% likely by late 2026. Region-by-region impact analysis.