Port Isabel Texas Climate Data

Monthly Average Climate Data for Port Isabel Texas

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January54.3 °F67.3 °F1.64 in.
February57.4 °F70.3 °F1.32 in.
March62.5 °F73.9 °F1.41 in.
April68.3 °F78.5 °F1.33 in.
May74.2 °F83.6 °F1.88 in.
June77.9 °F87.4 °F2.16 in.
July78.8 °F88.6 °F1.52 in.
August79.4 °F89.5 °F1.68 in.
September77.3 °F87.0 °F5.87 in.
October72.5 °F82.6 °F3.25 in.
November63.9 °F75.8 °F2.13 in.
December56.2 °F69.4 °F1.79 in.
Annual68.6 °F79.5 °F25.98 in.

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 : 35°F to 30°F
Plant Hardiness Zone - 2012Zone 10a : 30°F to 25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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