National Weather Service Forecast for: Costa Mesa CA
Issued by: National Weather Service San Diego, CA
Updated: 1:04 pm PDT Jun 19, 2026
 
Tonight

Tonight: Increasing clouds, with a low around 59. West wind 5 to 10 mph becoming light in the evening.
Increasing
Clouds
 Saturday

Saturday: Cloudy through mid morning, then gradual clearing, with a high near 72. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Gradual
Clearing
 Saturday
Night
Saturday Night: Increasing clouds, with a low around 59. West wind 5 to 10 mph becoming light southwest after midnight.
Increasing
Clouds
 Sunday

Sunday: Cloudy through mid morning, then gradual clearing, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Gradual
Clearing
 Sunday
Night
Sunday Night: Increasing clouds, with a low around 60. West wind 5 to 10 mph becoming light after midnight.
Increasing
Clouds
 Monday

Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 73.
Becoming
Sunny
 Monday
Night
Monday Night: Increasing clouds, with a low around 61.
Increasing
Clouds
 Tuesday

Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 76.
Decreasing
Clouds
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 63.
Partly Cloudy
Lo 59 °F Hi 72 °F Lo 59 °F Hi 72 °F Lo 60 °F Hi 73 °F Lo 61 °F Hi 76 °F Lo 63 °F

Beach Hazards Statement
 

Tonight
 
 Increasing clouds, with a low around 59. West wind 5 to 10 mph becoming light in the evening.
Saturday
 
 Cloudy through mid morning, then gradual clearing, with a high near 72. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
 
 Increasing clouds, with a low around 59. West wind 5 to 10 mph becoming light southwest after midnight.
Sunday
 
 Cloudy through mid morning, then gradual clearing, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Sunday Night
 
 Increasing clouds, with a low around 60. West wind 5 to 10 mph becoming light after midnight.
Monday
 
 Mostly cloudy through mid morning, then gradual clearing, with a high near 73.
Monday Night
 
 Increasing clouds, with a low around 61.
Tuesday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 76.
Tuesday Night
 
 Partly cloudy, with a low around 63.
Wednesday
 
 Mostly sunny, with a high near 78.
Wednesday Night
 
 Partly cloudy, with a low around 64.
Thursday
 
 Mostly sunny, with a high near 78.
Thursday Night
 
 Mostly clear, with a low around 64.
Friday
 
 Partly sunny, then gradually becoming sunny, with a high near 75.

 

Forecast from NOAA-NWS for Costa Mesa CA.