Climate
El Cajon weather by month
Average highs, lows, rain and snow for every month, from 30 years of weather records.
Average temperatures
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Best time to visit: May, June, October, when highs are mild and rain is lightest.
Month by month
| Month | High | Low | Rain | Wet days |
|---|---|---|---|---|
| January | 69°F | 43°F | 2.3 in | 6 |
| February | 69°F | 44°F | 2.6 in | 7 |
| March | 71°F | 48°F | 1.9 in | 5 |
| April | 75°F | 51°F | 0.80 in | 4 |
| May | 76°F | 56°F | 0.30 in | 2 |
| June | 81°F | 59°F | 0.10 in | 1 |
| July | 86°F | 63°F | 0.20 in | 1 |
| August | 89°F | 65°F | 0.00 in | 0 |
| September | 87°F | 62°F | 0.10 in | 1 |
| October | 81°F | 56°F | 0.50 in | 2 |
| November | 75°F | 47°F | 1.0 in | 3 |
| December | 69°F | 42°F | 1.8 in | 6 |
NOAA U.S. Climate Normals 1991–2020, El Cajon, Ca Us (2 mi away, 495 ft). Wet days: days with at least 0.01 in of precipitation.
Questions
What is the hottest month in El Cajon?
August, with an average high of 89°F and low of 65°F.
What is the coldest month in El Cajon?
December, with an average low of 42°F and high of 69°F.
When does it rain most in El Cajon?
February is the wettest month, averaging 2.6 in of precipitation; the year totals about 11.6 inches.
What is the best time to visit El Cajon?
For mild weather (highs between 65°F and 85°F) with the least rain, May, June, October.
Where do these numbers come from?
NOAA’s 1991–2020 U.S. Climate Normals for the El Cajon weather station, 2 miles from downtown: 30-year averages, not a forecast.