San Juan Texas Climate Data

Monthly Average Climate Data for San Juan Texas

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January9.7 °C21.7 °C21.08 mm
February11.9 °C24.2 °C25.15 mm
March15.1 °C27.1 °C29.72 mm
April18.3 °C30.2 °C35.05 mm
May21.8 °C32.8 °C58.17 mm
June24 °C35.2 °C63.5 mm
July24.6 °C35.9 °C57.4 mm
August24.6 °C36.6 °C40.64 mm
September22.8 °C33.7 °C120.4 mm
October18.8 °C30.9 °C59.69 mm
November14.2 °C26.3 °C31.75 mm
December10.5 °C22.4 °C22.61 mm
Annual18 °C29.8 °C565.16 mm

Climate Data for San Juan Texas

Average First Frost DateFrost Rare
Average Last Frost DateFrost Rare
Average Days With FrostFrost Rare
Plant Hardiness Zone - 2023Zone 10a : -1.1°C to 1.7°C
Plant Hardiness Zone - 2012Zone 9b : -3.9°C to -1.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSh - Hot Semi-Arid Climate
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