West Mifflin Pennsylvania Climate Data

Monthly Average Climate Data for West Mifflin Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.4 °F37.2 °F3.17 in.
February22.5 °F40.0 °F2.47 in.
March29.6 °F49.3 °F3.35 in.
April39.9 °F62.5 °F3.41 in.
May50.6 °F72.1 °F3.83 in.
June59.1 °F80.0 °F4.48 in.
July63.4 °F83.8 °F4.24 in.
August61.9 °F82.5 °F3.67 in.
September54.9 °F76.1 °F3.47 in.
October43.6 °F64.0 °F3.12 in.
November34.0 °F51.9 °F2.95 in.
December26.7 °F41.5 °F3.1 in.
Annual42.3 °F61.7 °F41.26 in.

Climate Data for West Mifflin 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 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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