Port Isabel Texas Climate Data

Monthly Average Climate Data for Port Isabel Texas

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January12.4 °C19.6 °C41.66 mm
February14.1 °C21.3 °C33.53 mm
March16.9 °C23.3 °C35.81 mm
April20.2 °C25.8 °C33.78 mm
May23.4 °C28.7 °C47.75 mm
June25.5 °C30.8 °C54.86 mm
July26 °C31.4 °C38.61 mm
August26.3 °C31.9 °C42.67 mm
September25.2 °C30.6 °C149.1 mm
October22.5 °C28.1 °C82.55 mm
November17.7 °C24.3 °C54.1 mm
December13.4 °C20.8 °C45.47 mm
Annual20.3 °C26.4 °C659.89 mm

Climate Data for Port Isabel Texas

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
Plant Hardiness Zone - 2023Zone 10b : 1.7°C to 4.4°C
Plant Hardiness Zone - 2012Zone 10a : -1.1°C to 1.7°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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