Gilroy California Climate Data

Monthly Average Climate Data for Gilroy California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January39.5 °F60.5 °F4.14 in.
February41.2 °F62.3 °F4.47 in.
March43.0 °F65.5 °F2.81 in.
April44.7 °F70.4 °F1.28 in.
May48.2 °F75.6 °F0.51 in.
June51.2 °F81.5 °F0.1 in.
July53.9 °F84.3 °F0.0 in.
August54.2 °F85.2 °F0.03 in.
September52.6 °F84.2 °F0.05 in.
October48.3 °F78.6 °F0.8 in.
November42.7 °F67.2 °F1.59 in.
December38.5 °F60.2 °F4.09 in.
Annual46.5 °F73 °F19.87 in.

Climate Data for Gilroy California

Average First Frost DateNov. 21 - Nov. 30
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