National Weather Service Forecast for: Costa Mesa CA
Issued by: National Weather Service San Diego, CA
Updated: 8:38 pm PDT Jun 29, 2026
 
Tonight

Tonight: Patchy drizzle after 2am. Mostly cloudy, with a low around 62. South wind around 5 mph becoming calm in the evening.
Mostly Cloudy
then Patchy
Drizzle
 Tuesday

Tuesday: Patchy drizzle before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 72. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Patchy
Drizzle then
Mostly Sunny
 Tuesday
Night
Tuesday Night: Increasing clouds, with a low around 61. Southwest wind around 5 mph becoming calm in the evening.
Increasing
Clouds
 Wednesday

Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 72. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Gradual
Clearing
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 59. Southwest wind 5 to 10 mph becoming light after midnight.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 73.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 61.
Partly Cloudy

 Friday

Friday: Mostly sunny, with a high near 74.
Mostly Sunny

 Friday
Night
Friday Night: Increasing clouds, with a low around 62.
Increasing
Clouds
Lo 62 °F Hi 72 °F Lo 61 °F Hi 72 °F Lo 59 °F Hi 73 °F Lo 61 °F Hi 74 °F Lo 62 °F

 

Tonight
 
 Patchy drizzle after 2am. Mostly cloudy, with a low around 62. South wind around 5 mph becoming calm in the evening.
Tuesday
 
 Patchy drizzle before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 72. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Tuesday Night
 
 Increasing clouds, with a low around 61. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
 
 Cloudy through mid morning, then gradual clearing, with a high near 72. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
 
 Partly cloudy, with a low around 59. Southwest wind 5 to 10 mph becoming light after midnight.
Thursday
 
 Mostly sunny, with a high near 73.
Thursday Night
 
 Partly cloudy, with a low around 61.
Friday
 
 Mostly sunny, with a high near 74.
Friday Night
 
 Increasing clouds, with a low around 62.
Independence Day
 
 Partly sunny, with a high near 75.
Saturday Night
 
 Partly cloudy, with a low around 62.
Sunday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 74.
Sunday Night
 
 Increasing clouds, with a low around 63.
Monday
 
 Mostly cloudy, then gradually becoming sunny, with a high near 75.

 

Forecast from NOAA-NWS for Costa Mesa CA.