National Weather Service Forecast for: Westminster CA
Issued by: National Weather Service San Diego, CA
Updated: 11:54 am PDT Sep 12, 2026
 
Tonight

Tonight: Increasing clouds, with a low around 68. Southwest wind around 5 mph becoming calm after midnight.
Increasing
Clouds
 Sunday

Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 81. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Becoming
Sunny
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 67. Calm wind becoming southeast around 5 mph after midnight.
Partly Cloudy
 Monday

Monday: Mostly sunny, with a high near 80. Southeast wind 5 to 10 mph.
Mostly Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 66. Southeast wind 5 to 10 mph.
Partly Cloudy
 Tuesday

Tuesday: Mostly sunny, with a high near 77.
Mostly Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 64.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 77.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 65.
Mostly Clear
Lo 68 °F Hi 81 °F Lo 67 °F Hi 80 °F Lo 66 °F Hi 77 °F Lo 64 °F Hi 77 °F Lo 65 °F

 

Tonight
 
 Increasing clouds, with a low around 68. Southwest wind around 5 mph becoming calm after midnight.
Sunday
 
 Mostly cloudy through mid morning, then gradual clearing, with a high near 81. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Sunday Night
 
 Partly cloudy, with a low around 67. Calm wind becoming southeast around 5 mph after midnight.
Monday
 
 Mostly sunny, with a high near 80. Southeast wind 5 to 10 mph.
Monday Night
 
 Partly cloudy, with a low around 66. Southeast wind 5 to 10 mph.
Tuesday
 
 Mostly sunny, with a high near 77.
Tuesday Night
 
 Mostly clear, with a low around 64.
Wednesday
 
 Sunny, with a high near 77.
Wednesday Night
 
 Mostly clear, with a low around 65.
Thursday
 
 Sunny, with a high near 81.
Thursday Night
 
 Clear, with a low around 66.
Friday
 
 Sunny, with a high near 86.
Friday Night
 
 Mostly clear, with a low around 68.
Saturday
 
 Sunny, with a high near 87.

 

Forecast from NOAA-NWS for Westminster CA.