Antioch California Climate Data

Monthly Average Climate Data for Antioch California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January39.7 °F55.8 °F2.94 in.
February42.3 °F60.6 °F2.83 in.
March45.4 °F65.4 °F1.93 in.
April48.4 °F70.0 °F1.06 in.
May52.9 °F76.2 °F0.5 in.
June56.8 °F82.9 °F0.12 in.
July58.7 °F88.0 °F0.0 in.
August58.9 °F86.7 °F0.04 in.
September57.2 °F84.4 °F0.07 in.
October52.2 °F76.7 °F0.64 in.
November44.3 °F64.8 °F1.48 in.
December39.6 °F56.0 °F2.82 in.
Annual49.7 °F72.3 °F14.43 in.

Climate Data for Antioch California

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateFeb. 21 - Feb. 29
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