Thursday
Patchy fog
High:
78°F
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 78. Light south wind increasing to 5 to 10 mph in the morning.
Costa Mesa, CA Weather - Extended Forecast
Thursday Night
Clouds increasing
Overnight low:
64°F
Increasing clouds, with a low around 64.
Friday
Clouds clearing
High:
74°F
Mostly cloudy, then gradually becoming sunny, with a high near 74.
Friday Night
Clouds increasing
Overnight low:
63°F
Increasing clouds, with a low around 63.
Saturday
Clouds clearing
High:
74°F
Saturday Night
Clouds increasing
Overnight low:
63°F
Sunday
Clouds clearing
High:
75°F
Sunday Night
Clouds increasing
Overnight low:
63°F
Monday
Clouds clearing
High:
74°F