San Rafael California Climate Data

Monthly Average Climate Data for San Rafael California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January42.1 °F56.3 °F8.06 in.
February43.6 °F60.2 °F8.18 in.
March44.8 °F63.3 °F5.31 in.
April46.4 °F67.6 °F2.39 in.
May49.2 °F72.5 °F1.14 in.
June52.0 °F77.8 °F0.25 in.
July53.6 °F80.1 °F0.0 in.
August54.2 °F80.4 °F0.05 in.
September53.2 °F80.0 °F0.09 in.
October50.2 °F74.6 °F1.74 in.
November45.7 °F64.0 °F3.92 in.
December41.9 °F56.6 °F8.54 in.
Annual48.1 °F69.5 °F39.67 in.

Climate Data for San Rafael California

Average First Frost DateJan. 1 - Jan. 10
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 ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate