Portland Pennsylvania Climate Data

Monthly Average Climate Data for Portland Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.4 °F37.3 °F3.55 in.
February20.8 °F40.6 °F2.89 in.
March27.7 °F48.9 °F3.93 in.
April37.7 °F61.7 °F4.02 in.
May48.1 °F71.7 °F4.2 in.
June57.2 °F79.6 °F4.84 in.
July62.2 °F84.4 °F4.72 in.
August60.3 °F82.5 °F4.77 in.
September53.3 °F76.2 °F4.93 in.
October41.6 °F64.4 °F4.91 in.
November31.8 °F53.3 °F3.53 in.
December25.0 °F42.7 °F4.34 in.
Annual40.4 °F61.9 °F50.63 in.

Climate Data for Portland Pennsylvania

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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