El Cajon weather by month
Average highs run from 69°F in January to 86°F in July, and January nights average 42°F. It gets 12 inches of rain and melted snow a year, with almost no snow. Expect about 57 days a year at 90°F or hotter. The most comfortable months are January to June and October to November.
Best time to visit El Cajon
For comfortable weather, go in January to June and October to November. In those months the average high stays between 62°F and 86°F, nights average 42°F or warmer, and rain stays under 4.5 inches for the month.
Month by month
| Month | High | Low | Precip. | Snow | Wet days | Days 90°F+ | Nights below 32°F | Feels |
|---|---|---|---|---|---|---|---|---|
| January | 69°F | 43°F | 2.3 in | 0.0 in | 4 | 0 | 1 | mild |
| February | 69°F | 44°F | 2.6 in | 0.0 in | 5 | 0 | 0 | mild |
| March | 71°F | 48°F | 1.9 in | 0.0 in | 3 | 1 | 0 | mild |
| April | 75°F | 51°F | 0.8 in | 0.0 in | 2 | 2 | 0 | mild |
| May | 76°F | 56°F | 0.3 in | 0.0 in | 1 | 3 | 0 | warm |
| June | 81°F | 59°F | 0.1 in | 0.0 in | 0 | 4 | 0 | warm |
| July | 86°F | 63°F | 0.2 in | 0.0 in | 0 | 10 | 0 | warm |
| August | 89°F | 65°F | 0.0 in | 0.0 in | 0 | 15 | 0 | hot |
| September | 87°F | 62°F | 0.1 in | 0.0 in | 0 | 14 | 0 | hot |
| October | 81°F | 56°F | 0.5 in | 0.0 in | 1 | 7 | 0 | warm |
| November | 75°F | 47°F | 1.0 in | 0.0 in | 2 | 2 | 0 | mild |
| December | 69°F | 42°F | 1.8 in | 0.0 in | 4 | 0 | 1 | mild days, chilly nights |
| Year | 77°F avg | 53°F avg | 11.6 in | 0.0 in | 23 | 57 | 3 |
"Wet days" are days with at least 0.1 inch of precipitation. "Feels" is a plain-language label for the average high. Normals for 1991-2020 from NOAA NCEI, station El Cajon, CA (USC00042706), 0.5 miles from the city center. Averages describe typical conditions, not a forecast.
Sunrise, sunset and daylight in El Cajon
The shortest day is December 21, with 9h 59m of daylight; the longest is June 21, with 14h 18m. The earliest sunset comes around December 1 (4:40 pm) and the latest around June 23 (7:59 pm). The sun never sets after 8 pm here.
| On the 15th of | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 6:50 am | 5:04 pm | 10h 14m |
| February | 6:30 am | 5:33 pm | 11h 02m |
| March | 6:57 am | 6:55 pm | 11h 58m |
| April | 6:18 am | 7:17 pm | 13h 00m |
| May | 5:48 am | 7:39 pm | 13h 51m |
| June | 5:39 am | 7:57 pm | 14h 18m |
| July | 5:50 am | 7:56 pm | 14h 06m |
| August | 6:11 am | 7:32 pm | 13h 21m |
| September | 6:31 am | 6:53 pm | 12h 22m |
| October | 6:52 am | 6:14 pm | 11h 22m |
| November | 6:18 am | 4:46 pm | 10h 28m |
| December | 6:43 am | 4:42 pm | 10h 00m |
Calculated for 2026 at the center of El Cajon with NOAA's solar equations, in local clock time (Pacific Time, including daylight saving time where it applies). Times shift by a minute or two from year to year.
Is El Cajon getting warmer?
The last 10 years averaged 2.8°F warmer than the 20th century. See the climate stripes for El Cajon.Frequently asked questions
What is the warmest month in El Cajon?
August is the warmest month, with an average high of 89°F and an average low of 65°F (NOAA 1991-2020 normals).
What is the coldest month in El Cajon?
December is the coldest, with average lows of 42°F and highs of 69°F.
What is the rainiest month in El Cajon?
February gets the most precipitation, 2.6 inches on average. August is the driest at 0.0 inches.
Does it snow in El Cajon?
Very little. The normal yearly snowfall is under one inch.
When is the best time to visit El Cajon?
For comfortable weather, January to June and October to November. Those months average highs between 62 and 86°F with lows of 42°F or more and modest rain.
Thinking of moving to El Cajon?
See what homes, rent and everyday prices cost, who lives there and how it compares with nearby cities on the full El Cajon profile.
Compare the weather: El Cajon vs Chula Vista, El Cajon vs San Diego, El Cajon vs Escondido, El Cajon vs San Marcos.