San Marcos Texas Climate Data

Monthly Average Climate Data for San Marcos Texas

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January4.1 °C16.8 °C57.91 mm
February6.1 °C19 °C45.72 mm
March9.9 °C22.6 °C74.68 mm
April13.7 °C26.3 °C73.66 mm
May18.4 °C29.9 °C118.11 mm
June21.9 °C33.2 °C85.34 mm
July22.8 °C35 °C53.34 mm
August22.9 °C35.8 °C67.06 mm
September20 °C32.4 °C90.93 mm
October14.7 °C27.8 °C106.43 mm
November9.1 °C21.8 °C70.1 mm
December5 °C17.6 °C62.48 mm
Annual14.1 °C26.5 °C905.76 mm

Climate Data for San Marcos Texas

Average First Frost DateNov. 21 - Nov. 30
Average Last Frost DateMar. 1 - Mar. 10
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9a : -6.7°C to -3.9°C
Plant Hardiness Zone - 2012Zone 8b : -9.4°C to -6.7°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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