Castle Shannon Pennsylvania Climate Data

Monthly Average Climate Data for Castle Shannon Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.2 °F36.6 °F3.26 in.
February22.6 °F39.3 °F2.61 in.
March29.7 °F48.8 °F3.37 in.
April40.1 °F62.3 °F3.44 in.
May50.5 °F71.8 °F4.11 in.
June59.3 °F79.6 °F4.36 in.
July63.4 °F83.4 °F4.45 in.
August61.9 °F82.2 °F3.55 in.
September55.0 °F75.8 °F3.55 in.
October43.6 °F63.6 °F3.07 in.
November34.0 °F51.4 °F3.05 in.
December26.6 °F40.9 °F3.25 in.
Annual42.3 °F61.3 °F42.07 in.

Climate Data for Castle Shannon Pennsylvania

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°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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