Costa Mesa, California Weather:
Monday, June 15, 2026
Cloudy Weather
Day 70°
Night 64°
Precipitation 1 %
Wind 10 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (June 15, 2025)
Sunny Weather

Day

81°

Night

63°

Wind

6 mph

UV Index

12

Precipitation

1 %