Ross California Climate Data

Monthly Average Climate Data for Ross California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January41.8 °F56.3 °F8.59 in.
February43.3 °F60.3 °F8.42 in.
March44.4 °F63.4 °F5.6 in.
April46.1 °F66.3 °F2.43 in.
May48.8 °F71.3 °F1.19 in.
June51.7 °F76.7 °F0.25 in.
July53.3 °F79.7 °F0.01 in.
August53.9 °F79.7 °F0.05 in.
September52.9 °F78.9 °F0.1 in.
October49.6 °F73.5 °F1.86 in.
November45.4 °F64.0 °F4.12 in.
December41.3 °F56.6 °F8.88 in.
Annual47.7 °F68.9 °F41.5 in.

Climate Data for Ross California

Average First Frost DateDec. 21 - Dec. 31
Average Last Frost DateFeb. 1 - Feb. 10
Average Days With FrostFrost Rare
Plant Hardiness Zone - 2023Zone 9b : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 10a : 30°F to 25°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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