Upland California Climate Data

Monthly Average Climate Data for Upland California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January44.1 °F66.5 °F3.57 in.
February44.7 °F66.9 °F4.57 in.
March46.6 °F70.1 °F2.77 in.
April48.9 °F73.8 °F0.86 in.
May52.9 °F77.6 °F0.55 in.
June57.0 °F84.1 °F0.12 in.
July61.9 °F90.6 °F0.07 in.
August62.9 °F92.4 °F0.02 in.
September61.1 °F89.5 °F0.13 in.
October55.3 °F81.0 °F0.74 in.
November48.3 °F73.3 °F0.99 in.
December43.8 °F65.5 °F2.53 in.
Annual52.3 °F77.6 °F16.92 in.

Climate Data for Upland 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 10a : 30°F to 25°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
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