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Costa Mesa, California Weather:
Thursday, January 1, 2026
Rainy Weather
Day 59°
Night 57°
Precipitation 55 %
Wind 2 mph
UV Index (0 - 11+) 1
Weather Forecast History
Last Year's Weather on This Day (January 1, 2025)
Partly Sunny with Showers

Day

61°

Night

43°

Wind

4 mph

UV Index

3

Precipitation

49 %