Eureka California Climate Data

Monthly Average Climate Data for Eureka California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January42.2 °F55.0 °F7.99 in.
February42.4 °F55.3 °F6.15 in.
March42.9 °F56.0 °F6.28 in.
April44.6 °F56.2 °F4.02 in.
May47.6 °F57.9 °F1.71 in.
June50.0 °F59.7 °F0.83 in.
July52.3 °F60.7 °F0.25 in.
August52.9 °F62.1 °F0.17 in.
September50.6 °F62.0 °F0.57 in.
October47.2 °F60.5 °F2.22 in.
November44.2 °F58.0 °F4.99 in.
December41.5 °F54.8 °F8.56 in.
Annual46.5 °F58.2 °F43.74 in.

Climate Data for Eureka California

Average First Frost DateDec. 11 - Dec. 20
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost5-10 Days
Plant Hardiness Zone - 2023Zone 9b : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate