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

Tonight: Mostly clear, with a low around 48. North wind around 5 mph becoming calm.
Mostly Clear
 Monday

Monday: Sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 48. Calm wind.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 49. East wind around 5 mph.
Clear
 Wednesday

Wednesday: Sunny, with a high near 82.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 51.
Mostly Clear
 Thursday

Thursday: Mostly sunny, with a high near 78.
Mostly Sunny
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 47.
Partly Cloudy
Lo 48 °F Hi 78 °F Lo 48 °F Hi 81 °F Lo 49 °F Hi 82 °F Lo 51 °F Hi 78 °F Lo 47 °F

 

Tonight
 
 Mostly clear, with a low around 48. North wind around 5 mph becoming calm.
Monday
 
 Sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
 Mostly clear, with a low around 48. Calm wind.
Tuesday
 
 Sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
 
 Clear, with a low around 49. East wind around 5 mph.
Wednesday
 
 Sunny, with a high near 82.
Wednesday Night
 
 Mostly clear, with a low around 51.
Thursday
 
 Mostly sunny, with a high near 78.
Thursday Night
 
 Partly cloudy, with a low around 47.
Friday
 
 Mostly sunny, with a high near 74.
Friday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 46.
Saturday
 
 Mostly sunny, with a high near 75.
Saturday Night
 
 Partly cloudy, with a low around 47.
Sunday
 
 Sunny, with a high near 78.

 

Forecast from NOAA-NWS for San Jacinto CA.