Port Arthur Texas Climate Data

Monthly Average Climate Data for Port Arthur Texas

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January6.2 °C16.3 °C142.49 mm
February8.3 °C18.4 °C91.44 mm
March11.6 °C21.8 °C105.41 mm
April15.3 °C25.2 °C96.52 mm
May19.8 °C28.8 °C130.3 mm
June23.2 °C31.8 °C175.01 mm
July24.1 °C32.8 °C158.75 mm
August23.8 °C33.2 °C177.04 mm
September21.3 °C31.2 °C165.35 mm
October15.9 °C26.9 °C135.38 mm
November10.6 °C21.4 °C112.52 mm
December7.2 °C17.5 °C121.67 mm
Annual15.6 °C25.4 °C1611.88 mm

Climate Data for Port Arthur Texas

Average First Frost DateDec. 11 - Dec. 20
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9b : -3.9°C to -1.1°C
Plant Hardiness Zone - 2012Zone 9a : -6.7°C to -3.9°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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