National Weather Service Forecast for: El Cajon CA
Issued by: National Weather Service San Diego, CA
Updated: 12:18 am PDT Sep 13, 2026
 
Today

Today: Partly sunny, then gradually becoming sunny, with a high near 89. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Becoming
Sunny
 Tonight

Tonight: Increasing clouds, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.
Increasing
Clouds
 Monday

Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Becoming
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 62. South wind around 5 mph becoming calm in the evening.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 87. Southeast wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Sunny
 Tuesday
Night
Tuesday Night: Increasing clouds, with a low around 60.
Increasing
Clouds
 Wednesday

Wednesday: Sunny, with a high near 89.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 61.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 87.
Sunny
Hi 89 °F Lo 64 °F Hi 86 °F Lo 62 °F Hi 87 °F Lo 60 °F Hi 89 °F Lo 61 °F Hi 87 °F

 

Today
 
 Partly sunny, then gradually becoming sunny, with a high near 89. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
 
 Increasing clouds, with a low around 64. Southwest wind around 5 mph becoming calm in the evening.
Monday
 
 Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
 
 Mostly clear, with a low around 62. South wind around 5 mph becoming calm in the evening.
Tuesday
 
 Sunny, with a high near 87. Southeast wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
 
 Increasing clouds, with a low around 60.
Wednesday
 
 Sunny, with a high near 89.
Wednesday Night
 
 Mostly clear, with a low around 61.
Thursday
 
 Sunny, with a high near 87.
Thursday Night
 
 Mostly clear, with a low around 62.
Friday
 
 Sunny, with a high near 90.
Friday Night
 
 Clear, with a low around 65.
Saturday
 
 Sunny, with a high near 93.

 

Forecast from NOAA-NWS for El Cajon CA.