National Weather Service Forecast for: Mission Viejo CA
Issued by: National Weather Service San Diego, CA
Updated: 11:14 am PDT Mar 19, 2026
 
Tonight

Tonight: Clear, with a low around 65. West wind around 5 mph becoming calm  in the evening.
Clear
Friday

Friday: Sunny, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.
Sunny
Friday
Night
Friday Night: Mostly clear, with a low around 62. West wind around 5 mph becoming calm  in the evening.
Mostly Clear
Saturday

Saturday: Mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Mostly Sunny
Saturday
Night
Saturday Night: Mostly cloudy, with a low around 59. West wind around 5 mph becoming calm  in the evening.
Mostly Cloudy
Sunday

Sunday: Mostly sunny, with a high near 82.
Mostly Sunny
Sunday
Night
Sunday Night: Partly cloudy, with a low around 59.
Partly Cloudy
Monday

Monday: Sunny, with a high near 82.
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 59.
Mostly Clear
Lo 65 °F Hi 90 °F Lo 62 °F Hi 83 °F Lo 59 °F Hi 82 °F Lo 59 °F Hi 82 °F Lo 59 °F

Heat Advisory
 

Tonight
 
Clear, with a low around 65. West wind around 5 mph becoming calm in the evening.
Friday
 
Sunny, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
 
Mostly clear, with a low around 62. West wind around 5 mph becoming calm in the evening.
Saturday
 
Mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
 
Mostly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening.
Sunday
 
Mostly sunny, with a high near 82.
Sunday Night
 
Partly cloudy, with a low around 59.
Monday
 
Sunny, with a high near 82.
Monday Night
 
Mostly clear, with a low around 59.
Tuesday
 
Sunny, with a high near 83.
Tuesday Night
 
Mostly clear, with a low around 59.
Wednesday
 
Sunny, with a high near 84.
Wednesday Night
 
Partly cloudy, with a low around 59.
Thursday
 
Mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Mission Viejo CA.