Harleysville Pennsylvania Climate Data

Monthly Average Climate Data for Harleysville Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.2 °F39.3 °F3.27 in.
February23.6 °F42.0 °F2.79 in.
March30.7 °F50.5 °F3.88 in.
April40.9 °F63.1 °F3.81 in.
May50.7 °F72.9 °F4.06 in.
June60.1 °F81.8 °F4.37 in.
July65.1 °F86.6 °F4.61 in.
August63.4 °F84.8 °F4.35 in.
September56.1 °F78.2 °F4.63 in.
October44.3 °F65.8 °F4.32 in.
November34.5 °F54.5 °F3.23 in.
December27.5 °F44.4 °F4.29 in.
Annual43.3 °F63.7 °F47.61 in.

Climate Data for Harleysville Pennsylvania

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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