Costa Mesa, California Weather:
Saturday, April 4, 2026
Cloudy Weather
Day 81°
Night 57°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (April 4, 2025)
Sunny Weather

Day

64°

Night

48°

Wind

7 mph

UV Index

8

Precipitation

1 %