National Weather Service Forecast for: San Jacinto CA
Issued by: National Weather Service San Diego, CA
Updated: 8:38 pm PDT Jun 29, 2026
 
Tonight

Tonight: Patchy drizzle after 2am. Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind around 5 mph becoming calm in the evening.
Patchy Fog
then Patchy
Drizzle and
Patchy Fog
 Tuesday

Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Patchy Fog
then Sunny

 Tuesday
Night
Tuesday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind 5 to 10 mph becoming light west in the evening.
Patchy Fog

 Wednesday

Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Patchy Fog
then Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 87.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 57.
Mostly Clear

 Friday

Friday: Sunny, with a high near 90.
Sunny

 Friday
Night
Friday Night: Partly cloudy, with a low around 59.
Partly Cloudy
Lo 54 °F Hi 80 °F Lo 54 °F Hi 84 °F Lo 55 °F Hi 87 °F Lo 57 °F Hi 90 °F Lo 59 °F

 

Tonight
 
 Patchy drizzle after 2am. Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
 
 Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind 5 to 10 mph becoming light west in the evening.
Wednesday
 
 Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
 
 Mostly clear, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.
Thursday
 
 Sunny, with a high near 87.
Thursday Night
 
 Mostly clear, with a low around 57.
Friday
 
 Sunny, with a high near 90.
Friday Night
 
 Partly cloudy, with a low around 59.
Independence Day
 
 Sunny, with a high near 93.
Saturday Night
 
 Mostly clear, with a low around 61.
Sunday
 
 Sunny, with a high near 93.
Sunday Night
 
 Mostly clear, with a low around 61.
Monday
 
 Sunny, with a high near 95.

 

Forecast from NOAA-NWS for San Jacinto CA.