Sunnyvale California Climate Data

Monthly Average Climate Data for Sunnyvale California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January41.5 °F58.8 °F3.22 in.
February43.4 °F61.8 °F3.59 in.
March45.5 °F65.3 °F2.24 in.
April47.3 °F68.7 °F1.11 in.
May50.9 °F73.4 °F0.38 in.
June53.9 °F78.4 °F0.11 in.
July56.6 °F80.8 °F0.0 in.
August56.8 °F80.8 °F0.05 in.
September55.3 °F80.2 °F0.07 in.
October51.2 °F75.2 °F0.65 in.
November45.3 °F65.2 °F1.42 in.
December41.2 °F58.6 °F2.9 in.
Annual49.1 °F70.6 °F15.74 in.

Climate Data for Sunnyvale California

Average First Frost DateJan. 1 - Jan. 10
Average Last Frost DateFeb. 1 - Feb. 10
Average Days With Frost10-20 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