National Weather Service Forecast for: San Dimas CA
Issued by: National Weather Service Los Angeles/Oxnard, CA
Updated: 3:14 am PDT Jul 5, 2025
 
Today

Today: Sunny, with a high near 88. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunny
Tonight

Tonight: Mostly clear, with a low around 61. West southwest wind 5 to 10 mph becoming light  in the evening.
Mostly Clear
Sunday

Sunday: Sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny
Sunday
Night
Sunday Night: Mostly clear, with a low around 60. Southwest wind 5 to 10 mph becoming light south southwest  in the evening.
Mostly Clear
Monday

Monday: Sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 62.
Mostly Clear
Tuesday

Tuesday: Sunny, with a high near 94.
Sunny
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 65.
Mostly Clear
Wednesday

Wednesday: Sunny and hot, with a high near 97.
Hot
Hi 88 °F Lo 61 °F Hi 88 °F Lo 60 °F Hi 87 °F Lo 62 °F Hi 94 °F Lo 65 °F Hi 97 °F

Air Quality Alert
 

Today
 
Sunny, with a high near 88. Calm wind becoming west southwest around 5 mph in the afternoon.
Tonight
 
Mostly clear, with a low around 61. West southwest wind 5 to 10 mph becoming light in the evening.
Sunday
 
Sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
 
Mostly clear, with a low around 60. Southwest wind 5 to 10 mph becoming light south southwest in the evening.
Monday
 
Sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
Mostly clear, with a low around 62.
Tuesday
 
Sunny, with a high near 94.
Tuesday Night
 
Mostly clear, with a low around 65.
Wednesday
 
Sunny and hot, with a high near 97.
Wednesday Night
 
Mostly clear, with a low around 65.
Thursday
 
Sunny, with a high near 94.
Thursday Night
 
Mostly clear, with a low around 65.
Friday
 
Sunny and hot, with a high near 96.

 

Forecast from NOAA-NWS for San Dimas CA.