Millbrae California Climate Data

Monthly Average Climate Data for Millbrae California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January44.2 °F57.9 °F4.42 in.
February45.6 °F60.4 °F4.48 in.
March47.3 °F62.6 °F3.2 in.
April48.5 °F64.7 °F1.65 in.
May51.5 °F67.0 °F0.62 in.
June53.6 °F70.0 °F0.17 in.
July55.7 °F71.5 °F0.07 in.
August56.2 °F72.3 °F0.05 in.
September55.7 °F74.4 °F0.08 in.
October53.0 °F71.8 °F0.89 in.
November47.8 °F63.7 °F2.05 in.
December43.8 °F58.3 °F4.47 in.
Annual50.2 °F66.2 °F22.15 in.

Climate Data for Millbrae California

Average First Frost DateFrost Rare
Average Last Frost DateFrost Rare
Average Days With FrostFrost Free
Plant Hardiness Zone - 2023Zone 10a : 30°F to 25°F
Plant Hardiness Zone - 2012Zone 10a : 30°F to 25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate