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Costa Mesa, California Weather:
Tuesday, March 17, 2026
Sunny Weather
Day 61°
Night 48°
Precipitation 0 %
Wind 9 mph
Weather Forecast History
Last Year's Weather on This Day (March 17, 2025)
Partly Sunny with Showers

Day

64°

Night

48°

Wind

7 mph

UV Index

6

Precipitation

55 %