Rio Dell California Climate Data

Monthly Average Climate Data for Rio Dell California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4.8 °C12.9 °C214.38 mm
February5 °C13.6 °C182.12 mm
March5.4 °C14.3 °C167.89 mm
April6.3 °C15.4 °C96.01 mm
May8.2 °C18.4 °C45.97 mm
June9.7 °C18.6 °C16.76 mm
July11.2 °C19.9 °C4.06 mm
August11.3 °C21.1 °C2.54 mm
September9.9 °C21.4 °C11.68 mm
October7.9 °C20.9 °C57.91 mm
November6.1 °C15.1 °C124.46 mm
December4.5 °C12.3 °C228.35 mm
Annual7.5 °C17 °C1152.13 mm

Climate Data for Rio Dell California

Average First Frost DateDec. 21 - Dec. 31
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost5-10 Days
Plant Hardiness Zone - 2023Zone 9b : -3.9°C to -1.1°C
Plant Hardiness Zone - 2012Zone 9b : -3.9°C to -1.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
2024 plantmaps.com