San Ramon California Climate Data

Monthly Average Climate Data for San Ramon California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January39.7 °F57.0 °F4.79 in.
February41.3 °F60.9 °F5.0 in.
March43.3 °F64.8 °F3.57 in.
April45.5 °F68.0 °F1.8 in.
May49.6 °F73.4 °F0.83 in.
June53.1 °F80.5 °F0.16 in.
July56.0 °F85.8 °F0.02 in.
August56.3 °F85.7 °F0.04 in.
September54.9 °F83.9 °F0.1 in.
October50.5 °F76.3 °F1.13 in.
November43.8 °F65.1 °F2.43 in.
December39.6 °F57.1 °F4.97 in.
Annual47.8 °F71.5 °F24.84 in.

Climate Data for San Ramon California

Average First Frost DateDec. 11 - Dec. 20
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 ClassificationCsb - Warm-Summer Mediterranean Climate