Ione California Climate Data

Monthly Average Climate Data for Ione California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January3.9 °C13.3 °C119.13 mm
February5.2 °C16.1 °C109.22 mm
March6.8 °C18.8 °C93.98 mm
April8.1 °C21.9 °C56.13 mm
May10.8 °C26.3 °C38.1 mm
June13.7 °C30.9 °C5.59 mm
July15.4 °C34.3 °C0.51 mm
August15.3 °C34.1 °C2.03 mm
September14 °C31.1 °C5.33 mm
October10.4 °C25.3 °C25.4 mm
November6.2 °C18.2 °C60.2 mm
December3.8 °C13.4 °C106.68 mm
Annual9.5 °C23.6 °C622.3 mm

Climate Data for Ione California

Average First Frost DateDec. 21 - Dec. 31
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost10-20 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 ClassificationCsa - Hot-Summer Mediterranean Climate
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