Ione California Climate Data

Monthly Average Climate Data for Ione California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January39.1 °F55.9 °F4.69 in.
February41.3 °F60.9 °F4.3 in.
March44.2 °F65.8 °F3.7 in.
April46.6 °F71.4 °F2.21 in.
May51.5 °F79.3 °F1.5 in.
June56.6 °F87.6 °F0.22 in.
July59.8 °F93.7 °F0.02 in.
August59.6 °F93.3 °F0.08 in.
September57.2 °F88.0 °F0.21 in.
October50.7 °F77.5 °F1.0 in.
November43.2 °F64.8 °F2.37 in.
December38.8 °F56.2 °F4.2 in.
Annual49.1 °F74.5 °F24.5 in.

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 : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
2024 plantmaps.com