National Weather Service Forecast for: Costa Mesa, CA
Issued by: National Weather Service San Diego, CA
Updated: Tue, 17-Jun-2025 1:57pm PDT

Costa Mesa
 
This
Afternoon
This Afternoon: Sunny
Sunny
Wednesday

Wednesday: Sunny
Sunny
Juneteenth

Juneteenth: Patchy Fog then Mostly Sunny
Patchy Fog then Mostly Sunny
Friday

Friday: Patchy Fog then Mostly Sunny
Patchy Fog then Mostly Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Monday

Monday: Mostly Sunny
Mostly Sunny
 
Hi 80 °F Hi 79 °F Hi 77 °F Hi 75 °F Hi 74 °F Hi 74 °F Hi 74 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Patchy Fog
Patchy Fog
Thursday
Night
Thursday Night: Patchy Fog
Patchy Fog
Friday
Night
Friday Night: Mostly Cloudy
Mostly Cloudy
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Mostly Cloudy
Mostly Cloudy
 
Lo 62 °F Lo 62 °F Lo 63 °F Lo 62 °F Lo 61 °F Lo 61 °F Lo 61 °F  

 

This Afternoon
 
Sunny, with a high near 80. Southwest wind around 10 mph.
Tonight
 
Mostly clear, with a low around 62. South wind 5 to 10 mph.
Wednesday
 
Sunny, with a high near 79. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
 
Patchy fog after 11pm. Mostly cloudy, with a low around 62. South wind 0 to 10 mph.
Juneteenth
 
Patchy fog before 11am. Mostly sunny, with a high near 77. South wind 0 to 10 mph.
Thursday Night
 
Patchy fog after 11pm. Partly cloudy, with a low around 63.
Friday
 
Patchy fog before 11am. Mostly sunny, with a high near 75.
Friday Night
 
Mostly cloudy, with a low around 62.
Saturday
 
Mostly sunny, with a high near 74.
Saturday Night
 
Partly cloudy, with a low around 61.
Sunday
 
Mostly sunny, with a high near 74.
Sunday Night
 
Partly cloudy, with a low around 61.
Monday
 
Mostly sunny, with a high near 74.
Monday Night
 
Mostly cloudy, with a low around 61.

 

Forecast from NOAA-NWS for Costa Mesa, CA.