National Weather Service Forecast for: El Cajon CA
Issued by: National Weather Service San Diego, CA
Updated: 12:04 pm PST Feb 1, 2026
 
Overnight

Overnight: Mostly clear, with a low around 49. Calm wind.
Mostly Clear
 Monday

Monday: Mostly sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.
Mostly Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 48. Calm wind.
Partly Cloudy
 Tuesday

Tuesday: Sunny, with a high near 82. Calm wind becoming northwest around 5 mph in the afternoon.
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 50. Calm wind.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 86.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 56.
Mostly Clear
 Thursday

Thursday: Mostly sunny, with a high near 82.
Mostly Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 52.
Mostly Cloudy
Lo 49 °F Hi 77 °F Lo 48 °F Hi 82 °F Lo 50 °F Hi 86 °F Lo 56 °F Hi 82 °F Lo 52 °F

 

Overnight
 
 Mostly clear, with a low around 49. Calm wind.
Monday
 
 Mostly sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
 
 Partly cloudy, with a low around 48. Calm wind.
Tuesday
 
 Sunny, with a high near 82. Calm wind becoming northwest around 5 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 50. Calm wind.
Wednesday
 
 Sunny, with a high near 86.
Wednesday Night
 
 Mostly clear, with a low around 56.
Thursday
 
 Mostly sunny, with a high near 82.
Thursday Night
 
 Mostly cloudy, with a low around 52.
Friday
 
 Mostly sunny, with a high near 77.
Friday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 49.
Saturday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 76.
Saturday Night
 
 Partly cloudy, with a low around 50.
Sunday
 
 Mostly sunny, with a high near 80.

 

Forecast from NOAA-NWS for El Cajon CA.