Arnold California Climate Data

Monthly Average Climate Data for Arnold California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January33.7 °F51.1 °F9.17 in.
February33.4 °F52.0 °F8.5 in.
March35.2 °F55.9 °F7.42 in.
April38.1 °F60.1 °F4.26 in.
May44.5 °F68.9 °F2.6 in.
June52.0 °F78.9 °F0.65 in.
July58.8 °F86.9 °F0.09 in.
August58.5 °F87.0 °F0.26 in.
September53.9 °F81.4 °F0.46 in.
October45.9 °F70.1 °F2.68 in.
November37.9 °F58.0 °F4.55 in.
December33.0 °F49.7 °F8.71 in.
Annual43.7 °F66.7 °F49.35 in.

Climate Data for Arnold California

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 21 - May 31
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 8b : 15°F to 20°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
2024 plantmaps.com