San Antonio Texas Climate Data

Monthly Average Climate Data for San Antonio Texas

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4.8 °C17.9 °C50.55 mm
February7.1 °C20.3 °C49.02 mm
March10.8 °C23.7 °C62.48 mm
April14.5 °C27.3 °C57.91 mm
May19.3 °C30.8 °C99.06 mm
June22.5 °C33.9 °C82.3 mm
July23.4 °C35.3 °C55.12 mm
August23.4 °C36 °C61.21 mm
September20.8 °C32.9 °C94.49 mm
October15.6 °C28.4 °C94.74 mm
November9.9 °C22.7 °C64.52 mm
December5.8 °C18.7 °C55.37 mm
Annual14.8 °C27.3 °C826.77 mm

Climate Data for San Antonio Texas

Average First Frost DateNov. 21 - Nov. 30
Average Last Frost DateMar. 11 - Mar. 20
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°C
Plant Hardiness Zone - 2012Zone 9a : -6.7°C to -3.9°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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