National Weather Service Forecast for: San Jacinto CA
Issued by: National Weather Service San Diego, CA
Updated: 12:37 am PDT May 4, 2026
 
Today

Today: Mostly cloudy, with a high near 66. Southwest wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Mostly Cloudy
 Tonight

Tonight: A chance of showers after 11pm. Mostly cloudy, with a low around 46. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers
 Tuesday

Tuesday: A slight chance of showers. Partly sunny, with a high near 63. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Slight Chance
Showers
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 44. Southwest wind around 5 mph becoming calm in the evening.
Partly Cloudy
 Wednesday

Wednesday: Sunny, with a high near 78. Light and variable wind becoming northwest 5 to 10 mph in the afternoon.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 52.
Clear
 Thursday

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

Friday: Sunny, with a high near 91.
Sunny
Hi 66 °F Lo 46 °F Hi 63 °F Lo 44 °F Hi 78 °F Lo 52 °F Hi 86 °F Lo 56 °F Hi 91 °F

 

Today
 
 Mostly cloudy, with a high near 66. Southwest wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tonight
 
 A chance of showers after 11pm. Mostly cloudy, with a low around 46. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 A slight chance of showers. Partly sunny, with a high near 63. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
 
 Partly cloudy, with a low around 44. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
 
 Sunny, with a high near 78. Light and variable wind becoming northwest 5 to 10 mph in the afternoon.
Wednesday Night
 
 Clear, with a low around 52.
Thursday
 
 Sunny, with a high near 86.
Thursday Night
 
 Mostly clear, with a low around 56.
Friday
 
 Sunny, with a high near 91.
Friday Night
 
 Clear, with a low around 58.
Saturday
 
 Sunny, with a high near 94.
Saturday Night
 
 Mostly clear, with a low around 60.
Sunday
 
 Sunny, with a high near 97.

 

Forecast from NOAA-NWS for San Jacinto CA.