Harlingen Texas Climate Data

Monthly Average Climate Data for Harlingen Texas

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January50.4 °F70.7 °F1.06 in.
February54.2 °F74.9 °F1.19 in.
March59.4 °F79.8 °F1.35 in.
April65.5 °F85.4 °F1.43 in.
May71.5 °F90.1 °F2.35 in.
June75.3 °F94.4 °F2.77 in.
July76.2 °F95.4 °F2.38 in.
August76.2 °F96.6 °F2.07 in.
September73.1 °F91.9 °F5.5 in.
October66.1 °F87.2 °F3.33 in.
November58.0 °F78.7 °F1.67 in.
December51.5 °F71.9 °F1.39 in.
Annual64.8 °F84.8 °F26.49 in.

Climate Data for Harlingen Texas

Average First Frost DateJan. 1 - Jan. 10
Average Last Frost DateJan. 21 - Jan. 31
Average Days With FrostFrost Rare
Plant Hardiness Zone - 2023Zone 10a : 30°F to 25°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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