Harrisburg Pennsylvania Climate Data

Monthly Average Climate Data for Harrisburg Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.5 °F37.8 °F3.21 in.
February23.6 °F40.6 °F2.58 in.
March31.3 °F49.6 °F3.7 in.
April41.7 °F62.4 °F3.59 in.
May51.9 °F72.3 °F4.09 in.
June61.2 °F81.4 °F4.23 in.
July65.7 °F86.2 °F4.28 in.
August64.0 °F84.2 °F3.96 in.
September56.7 °F77.1 °F4.62 in.
October45.1 °F64.8 °F3.94 in.
November35.1 °F53.2 °F3.1 in.
December27.6 °F42.4 °F3.4 in.
Annual43.9 °F62.7 °F44.7 in.

Climate Data for Harrisburg Pennsylvania

Average First Frost DateOct. 21 - Oct. 31
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 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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