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Costa Mesa, California

Current conditions and the National Weather Service 7-day forecast for Costa Mesa, California — temperature, rain chance, wind, radar and active alerts.

Saturday Oct 3: a high near 97°F and a low around 75°F. Highs over the period run 87°F to 97°F.

National Weather Service forecast for Costa Mesa, California
DayHighLowPrecip
Saturday Oct 397°75°—
Sunday Oct 496°75°—
Monday Oct 595°75°—
Tuesday Oct 691°73°—
Wednesday Oct 790°72°—
Thursday Oct 889°71°—
Friday Oct 987°——

NOAA NWS NDFD 2.5 km, run 2026-10-03 15:00 UTC · days are local time in America/Los Angeles. The live page updates continuously.

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