Atglen Pennsylvania Climate Data

Monthly Average Climate Data for Atglen Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.5 °F38.9 °F3.62 in.
February23.1 °F40.9 °F2.94 in.
March30.5 °F49.7 °F4.29 in.
April40.8 °F62.0 °F3.86 in.
May50.6 °F71.6 °F3.96 in.
June59.6 °F80.2 °F4.7 in.
July64.8 °F84.5 °F4.83 in.
August63.2 °F83.3 °F4.43 in.
September55.9 °F76.7 °F5.01 in.
October44.3 °F65.0 °F4.61 in.
November35.0 °F53.4 °F3.43 in.
December27.6 °F43.2 °F4.22 in.
Annual43.2 °F62.5 °F49.9 in.

Climate Data for Atglen 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation