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Costa Mesa, California Weather:
Monday, December 29, 2025
Sunny Weather
Day 72°
Night 55°
Precipitation 4 %
Wind 8 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (December 29, 2024)
Partly Sunny with Showers

Day

59°

Night

50°

Wind

4 mph

UV Index

2

Precipitation

83 %