National Weather Service Forecast for: Mount Wilson CA
Issued by: National Weather Service Los Angeles/Oxnard, CA
Updated: 5:53 pm PDT Jun 19, 2026
 
Tonight

Tonight: Mostly clear, with a low around 58. South southwest wind 5 to 10 mph becoming light south  in the evening.
Mostly Clear
Saturday

Saturday: Sunny, with a high near 73. Light south wind becoming south southwest 5 to 10 mph in the afternoon.
Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 59. South southwest wind 5 to 10 mph becoming light south  after midnight. Winds could gust as high as 15 mph.
Mostly Clear
Sunday

Sunday: Sunny, with a high near 75. Light south wind becoming south southwest 5 to 10 mph in the afternoon.
Sunny
Sunday
Night
Sunday Night: Clear, with a low around 59. West wind around 10 mph, with gusts as high as 15 mph.
Clear
Monday

Monday: Sunny, with a high near 78.
Sunny
Monday
Night
Monday Night: Clear, with a low around 59.
Clear
Tuesday

Tuesday: Sunny, with a high near 83.
Sunny
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 66.
Mostly Clear
Lo 58 °F Hi 73 °F Lo 59 °F Hi 75 °F Lo 59 °F Hi 78 °F Lo 59 °F Hi 83 °F Lo 66 °F

Extreme Heat Watch
 

Tonight
 
Mostly clear, with a low around 58. South southwest wind 5 to 10 mph becoming light south in the evening.
Saturday
 
Sunny, with a high near 73. Light south wind becoming south southwest 5 to 10 mph in the afternoon.
Saturday Night
 
Mostly clear, with a low around 59. South southwest wind 5 to 10 mph becoming light south after midnight. Winds could gust as high as 15 mph.
Sunday
 
Sunny, with a high near 75. Light south wind becoming south southwest 5 to 10 mph in the afternoon.
Sunday Night
 
Clear, with a low around 59. West wind around 10 mph, with gusts as high as 15 mph.
Monday
 
Sunny, with a high near 78.
Monday Night
 
Clear, with a low around 59.
Tuesday
 
Sunny, with a high near 83.
Tuesday Night
 
Mostly clear, with a low around 66.
Wednesday
 
Sunny, with a high near 85.
Wednesday Night
 
A slight chance of showers. Mostly clear, with a low around 67.
Thursday
 
Sunny, with a high near 85.
Thursday Night
 
Clear, with a low around 64.
Friday
 
Sunny, with a high near 78.

 

Forecast from NOAA-NWS for Mount Wilson CA.