Mercer Pennsylvania Climate Data

Monthly Average Climate Data for Mercer Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.5 °F34.2 °F3.34 in.
February18.2 °F37.2 °F2.56 in.
March25.9 °F46.5 °F3.3 in.
April36.6 °F60.0 °F4.06 in.
May47.0 °F70.3 °F3.76 in.
June55.9 °F78.2 °F4.97 in.
July59.7 °F82.2 °F4.8 in.
August58.5 °F80.9 °F3.83 in.
September51.7 °F74.8 °F4.22 in.
October41.0 °F62.5 °F3.36 in.
November32.0 °F49.6 °F3.34 in.
December23.8 °F38.9 °F3.48 in.
Annual39 °F59.6 °F45.02 in.

Climate Data for Mercer 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 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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