Costa Mesa, California Weather:
Tuesday, August 4, 2026
Cloudy Weather
Day 75°
Night 66°
Precipitation 20 %
Wind 2 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (August 4, 2025)
Cloudy Night

Day

75°

Night

64°

Wind

6 mph

Precipitation

0 %