National Weather Service Forecast for: Mount Wilson CA
Issued by: National Weather Service Los Angeles/Oxnard, CA
Updated: 5:58 am PDT Mar 19, 2026
 
Today

Today: Sunny, with a high near 85. South southeast wind around 5 mph.
Sunny
 Tonight

Tonight: Clear, with a low around 67. South wind around 5 mph becoming north in the evening.
Clear
 Friday

Friday: Sunny, with a high near 85. Northeast wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
Sunny
 Friday
Night
Friday Night: Clear, with a low around 63. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Clear
 Saturday

Saturday: Sunny, with a high near 86. South southeast wind 5 to 15 mph becoming southwest in the afternoon.
Sunny
 Saturday
Night
Saturday Night: Partly cloudy, with a low around 59.
Partly Cloudy
 Sunday

Sunday: Mostly sunny, with a high near 78.
Mostly Sunny
 Sunday
Night
Sunday Night: Clear, with a low around 61.
Clear
 Monday

Monday: Sunny, with a high near 79.
Sunny
Hi 85 °F Lo 67 °F Hi 85 °F Lo 63 °F Hi 86 °F Lo 59 °F Hi 78 °F Lo 61 °F Hi 79 °F

Extreme Heat Warning
 

Today
 
 Sunny, with a high near 85. South southeast wind around 5 mph.
Tonight
 
 Clear, with a low around 67. South wind around 5 mph becoming north in the evening.
Friday
 
 Sunny, with a high near 85. Northeast wind 5 to 10 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
Friday Night
 
 Clear, with a low around 63. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
 
 Sunny, with a high near 86. South southeast wind 5 to 15 mph becoming southwest in the afternoon.
Saturday Night
 
 Partly cloudy, with a low around 59.
Sunday
 
 Mostly sunny, with a high near 78.
Sunday Night
 
 Clear, with a low around 61.
Monday
 
 Sunny, with a high near 79.
Monday Night
 
 Clear, with a low around 60.
Tuesday
 
 Sunny, with a high near 79.
Tuesday Night
 
 Clear, with a low around 59.
Wednesday
 
 Sunny, with a high near 77.

 

Forecast from NOAA-NWS for Mount Wilson CA.