National Weather Service Forecast for: Murrieta CA
Issued by: National Weather Service San Diego, CA
Updated: 12:34 am PDT Aug 20, 2026
 
Overnight

Overnight: Clear, with a low around 68. Calm wind becoming northwest around 5 mph.
Clear
Thursday

Thursday: Mostly sunny, with a high near 99. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Mostly Sunny
Thursday
Night
Thursday Night: Mostly clear, with a low around 67. Southwest wind around 5 mph becoming calm  in the evening.
Mostly Clear
Friday

Friday: Sunny, with a high near 98. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Sunny
Friday
Night
Friday Night: Mostly clear, with a low around 68. South wind 5 to 10 mph becoming light and variable  in the evening.
Mostly Clear
Saturday

Saturday: Sunny, with a high near 99.
Sunny
Saturday
Night
Saturday Night: Clear, with a low around 68.
Clear
Sunday

Sunday: Sunny, with a high near 98.
Sunny
Sunday
Night
Sunday Night: Mostly clear, with a low around 68.
Mostly Clear
Lo 68 °F Hi 99 °F Lo 67 °F Hi 98 °F Lo 68 °F Hi 99 °F Lo 68 °F Hi 98 °F Lo 68 °F

Heat Advisory
 

Overnight
 
Clear, with a low around 68. Calm wind becoming northwest around 5 mph.
Thursday
 
Mostly sunny, with a high near 99. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
 
Mostly clear, with a low around 67. Southwest wind around 5 mph becoming calm in the evening.
Friday
 
Sunny, with a high near 98. Light southwest wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
 
Mostly clear, with a low around 68. South wind 5 to 10 mph becoming light and variable in the evening.
Saturday
 
Sunny, with a high near 99.
Saturday Night
 
Clear, with a low around 68.
Sunday
 
Sunny, with a high near 98.
Sunday Night
 
Mostly clear, with a low around 68.
Monday
 
Sunny, with a high near 99.
Monday Night
 
Clear, with a low around 68.
Tuesday
 
Sunny, with a high near 100.
Tuesday Night
 
Mostly clear, with a low around 70.
Wednesday
 
Sunny, with a high near 99.

 

Forecast from NOAA-NWS for Murrieta CA.