Cornwall Pennsylvania Climate Data

Monthly Average Climate Data for Cornwall Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.9 °F37.8 °F3.3 in.
February21.9 °F40.7 °F2.57 in.
March29.6 °F49.6 °F3.85 in.
April39.8 °F62.5 °F3.7 in.
May50.0 °F72.4 °F4.07 in.
June59.4 °F80.6 °F4.56 in.
July63.7 °F85.3 °F4.71 in.
August62.0 °F83.4 °F4.14 in.
September54.9 °F76.6 °F4.96 in.
October43.3 °F65.0 °F4.44 in.
November33.6 °F53.3 °F3.44 in.
December26.3 °F42.5 °F3.77 in.
Annual42.1 °F62.5 °F47.51 in.

Climate Data for Cornwall 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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