Thermalito California Climate Data

Monthly Average Climate Data for Thermalito California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January38.8 °F55.7 °F5.84 in.
February41.2 °F60.8 °F5.0 in.
March43.6 °F65.7 °F4.33 in.
April46.7 °F71.6 °F2.12 in.
May52.7 °F80.4 °F1.36 in.
June58.5 °F88.8 °F0.38 in.
July62.7 °F94.7 °F0.02 in.
August60.7 °F93.3 °F0.07 in.
September57.5 °F88.8 °F0.21 in.
October50.5 °F78.7 °F1.38 in.
November42.8 °F64.5 °F2.8 in.
December38.5 °F55.5 °F5.3 in.
Annual49.5 °F74.9 °F28.81 in.

Climate Data for Thermalito California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost20-30 Days
Plant Hardiness Zone - 2023Zone 9b : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
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