National Weather Service Forecast for: Westminster CA
Issued by: National Weather Service San Diego, CA
Updated: 5:33 am PDT Oct 6, 2026
 
Today

Today: Sunny, with a high near 94. Southwest wind 5 to 10 mph.
Sunny
Tonight

Tonight: Clear, with a low around 71. Calm wind becoming south around 5 mph.
Clear
Wednesday

Wednesday: Sunny, with a high near 90. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Sunny
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 70. South wind around 5 mph becoming calm  in the evening.
Mostly Clear
Thursday

Thursday: Patchy fog before 11am.  Otherwise, sunny, with a high near 90. Light west wind increasing to 5 to 10 mph in the afternoon.
Patchy Fog
then Sunny
Thursday
Night
Thursday Night: Increasing clouds, with a low around 69.
Increasing
Clouds
Friday

Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 87.
Patchy Fog
then Sunny
Friday
Night
Friday Night: Mostly clear, with a low around 68.
Mostly Clear
Saturday

Saturday: Mostly sunny, with a high near 81.
Mostly Sunny
Hi 94 °F Lo 71 °F Hi 90 °F Lo 70 °F Hi 90 °F Lo 69 °F Hi 87 °F Lo 68 °F Hi 81 °F

Extreme Heat Warning
 

Today
 
Sunny, with a high near 94. Southwest wind 5 to 10 mph.
Tonight
 
Clear, with a low around 71. Calm wind becoming south around 5 mph.
Wednesday
 
Sunny, with a high near 90. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Wednesday Night
 
Mostly clear, with a low around 70. South wind around 5 mph becoming calm in the evening.
Thursday
 
Patchy fog before 11am. Otherwise, sunny, with a high near 90. Light west wind increasing to 5 to 10 mph in the afternoon.
Thursday Night
 
Increasing clouds, with a low around 69.
Friday
 
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 87.
Friday Night
 
Mostly clear, with a low around 68.
Saturday
 
Mostly sunny, with a high near 81.
Saturday Night
 
Partly cloudy, with a low around 66.
Sunday
 
A slight chance of showers. Partly sunny, with a high near 77.
Sunday Night
 
A slight chance of showers. Partly cloudy, with a low around 63.
Columbus Day
 
A slight chance of showers. Mostly sunny, with a high near 75.

 

Forecast from NOAA-NWS for Westminster CA.