El Cajon, CA Weather & Growing Conditions
Tonight
62°F
Partly Cloudy
Partly cloudy, with a low around 62. North wind 0 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Partly Cloudy | 0 to 10 mph N | 1% |
| Saturday | 81°F | Sunny | 0 to 10 mph NW | 0% |
| Saturday Night | 62°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 79°F | Partly Sunny | 0 to 10 mph S | 0% |
| Sunday Night | 63°F | Mostly Cloudy | 0 to 5 mph SW | 2% |
| Monday | 77°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Monday Night | 62°F | Partly Cloudy | 0 to 10 mph N | 0% |
| Tuesday | 79°F | Sunny | 0 to 10 mph NW | 0% |
| Tuesday Night | 63°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Wednesday | 84°F | Sunny | 0 to 10 mph NW | 2% |
| Wednesday Night | 65°F | Mostly Clear | 0 to 5 mph NW | 2% |
| Thursday | 86°F | Sunny | 0 to 10 mph NW | 3% |
| Thursday Night | 67°F | Mostly Clear | 0 to 5 mph NW | 1% |
| Friday | 88°F | Sunny | 0 to 5 mph NW | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for El Cajon, CA
Last spring frost
Jan 6
First fall frost
Dec 21
Growing season
350 days
Hardiness zone
10a
Explore more for El Cajon, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, El Cajon, Ca (2.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.