Rosemont California Climate Data

Monthly Average Climate Data for Rosemont California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January39.3 °F55.5 °F3.92 in.
February41.4 °F60.7 °F3.88 in.
March44.4 °F65.8 °F3.11 in.
April46.9 °F71.6 °F1.78 in.
May52.2 °F79.7 °F1.0 in.
June56.9 °F87.5 °F0.2 in.
July59.7 °F93.0 °F0.01 in.
August59.2 °F92.0 °F0.02 in.
September56.5 °F88.5 °F0.13 in.
October50.3 °F78.4 °F1.38 in.
November42.7 °F64.7 °F2.0 in.
December38.8 °F55.8 °F4.07 in.
Annual49 °F74.4 °F21.5 in.

Climate Data for Rosemont California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateMar. 1 - Mar. 10
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