Boulder Creek California Climate Data

Monthly Average Climate Data for Boulder Creek California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January3.4 °C15.9 °C253.49 mm
February4.2 °C16.9 °C268.99 mm
March4.9 °C18.6 °C183.64 mm
April5.8 °C19.8 °C84.07 mm
May7.7 °C22.8 °C31.75 mm
June9.3 °C26.5 °C9.4 mm
July10.9 °C28.6 °C0.51 mm
August10.8 °C28.8 °C1.27 mm
September9.8 °C27.9 °C3.81 mm
October7.6 °C24.3 °C56.9 mm
November5.2 °C19.4 °C115.06 mm
December3.4 °C15.3 °C257.56 mm
Annual6.9 °C22.1 °C1266.45 mm

Climate Data for Boulder Creek California

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost20-30 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°C
Plant Hardiness Zone - 2012Zone 9a : -6.7°C to -3.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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