Greencastle Pennsylvania Climate Data

Monthly Average Climate Data for Greencastle Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.5 °F39.9 °F3.07 in.
February24.7 °F43.3 °F2.39 in.
March31.9 °F51.9 °F3.57 in.
April41.9 °F64.2 °F3.72 in.
May51.6 °F73.4 °F3.96 in.
June60.5 °F82.2 °F3.78 in.
July64.9 °F86.6 °F3.51 in.
August63.1 °F84.8 °F3.36 in.
September56.2 °F78.0 °F3.87 in.
October45.0 °F66.1 °F3.42 in.
November35.2 °F54.5 °F2.97 in.
December27.5 °F43.6 °F3.35 in.
Annual43.8 °F64 °F40.97 in.

Climate Data for Greencastle Pennsylvania

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation