Costa Mesa California Climate Data

Monthly Average Climate Data for Costa Mesa California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January8.3 °C19.5 °C66.04 mm
February8.8 °C19.4 °C75.69 mm
March10.2 °C20.1 °C41.91 mm
April11.3 °C20.3 °C16.51 mm
May13.7 °C21.2 °C6.35 mm
June15.6 °C22.6 °C2.29 mm
July17.4 °C24.8 °C1.78 mm
August17.8 °C26 °C0.25 mm
September17 °C25.9 °C2.79 mm
October14.4 °C24.1 °C11.18 mm
November10.8 °C22.3 °C18.8 mm
December8.2 °C19.4 °C49.78 mm
Annual12.8 °C22.1 °C293.37 mm

Climate Data for Costa Mesa California

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
Plant Hardiness Zone - 2023Zone 10b : 1.7°C to 4.4°C
Plant Hardiness Zone - 2012Zone 10b : 1.7°C to 4.4°C
Current Drought ConditionsNormal
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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