Clearlake California Climate Data

Monthly Average Climate Data for Clearlake California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January35.1 °F56.0 °F6.54 in.
February36.0 °F58.7 °F6.21 in.
March38.2 °F62.7 °F4.08 in.
April41.1 °F67.0 °F1.91 in.
May46.6 °F74.8 °F1.26 in.
June52.9 °F84.0 °F0.23 in.
July57.8 °F91.9 °F0.0 in.
August56.4 °F91.0 °F0.03 in.
September52.1 °F86.3 °F0.12 in.
October45.4 °F75.7 °F1.3 in.
November38.2 °F63.2 °F2.87 in.
December34.7 °F55.6 °F6.33 in.
Annual44.5 °F72.2 °F30.88 in.

Climate Data for Clearlake California

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost40-50 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate