Costa Mesa, California Weather:
Thursday, October 1, 2026
Sunny Weather
Day 79°
Night 66°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (October 1, 2025)
Cloudy Weather

Day

75°

Night

59°

Wind

6 mph

UV Index

50

Precipitation

1 %