Derry Pennsylvania Climate Data

Monthly Average Climate Data for Derry Pennsylvania

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.7 °C2.5 °C100.33 mm
February-6.1 °C4.2 °C80.52 mm
March-2.2 °C9.1 °C99.57 mm
April3.4 °C16.4 °C108.97 mm
May9.1 °C21.8 °C121.41 mm
June13.8 °C25.9 °C129.54 mm
July16.1 °C27.9 °C133.6 mm
August15.2 °C27.4 °C102.87 mm
September11.4 °C23.9 °C112.52 mm
October5.1 °C17.3 °C89.41 mm
November-0.1 °C10.7 °C95.25 mm
December-3.8 °C4.9 °C97.54 mm
Annual4.6 °C16 °C1271.53 mm

Climate Data for Derry Pennsylvania

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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