El Cajon, CA All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in El Cajon, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 111°F (44°C) | September 26, 1963 and September 27, 2010 |
| Record Low | 28°F (-2°C) | January 5, 1972 and December 7, 1978 and December 8, 1978 |
| Lowest High | 42.9°F (6°C) | January 10, 1949 and January 11, 1949 |
| Highest Low | 78.9°F (26°C) | September 2, 1955 |
| Highest Mean | 94.5°F (35°C) | September 26, 1963 |
| Lowest Mean | 38.4°F (4°C) | January 11, 1949 |
| Precipitation | ||
| Max in One Calendar Day | 3.70" (94.0 mm) | February 27, 2017 |
| Max in One Month | 11.81" (299.9 mm) | February 1998 |
| Least in One Month | 0.00" (0.0 mm) | January 1948 |
| Max in One Year | 28.12" (714.3 mm) | 1978 |
| Least in One Year | 2.47" (62.7 mm) | 1989 |
| Period of Record | ||
| Temperature | July 1, 1947 – July 21, 2024 | |
| Precipitation | July 1, 1947 – July 21, 2024 | |
| Snowfall | July 1, 1947 – December 31, 2005 | |
Note: Records compiled from NOAA GHCN-Daily observations at SAN DIEGO MIRAMAR NAS (11 mi from El Cajon, CA). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
Shareable Image Version
Frequently Asked Questions
What is the hottest temperature ever recorded in El Cajon, CA?
The all-time record high in El Cajon, CA is 111°F (44°C), set on September 26, 1963 and September 27, 2010.
What is the coldest temperature ever recorded in El Cajon, CA?
The all-time record low in El Cajon, CA is 28°F (-2°C), set on January 5, 1972 and December 7, 1978 and December 8, 1978.
What is the most rain El Cajon, CA has ever had in one day?
The most precipitation recorded in one calendar day near El Cajon, CA is 3.70 inches, on February 27, 2017.
Look Up Extremes by ZIP Code
See the all-time weather extremes for any US location
El Cajon Weather History
Monthly averages, records, and climate data for El Cajon
California Weather Extremes
Statewide records and extremes for other California cities