Lemont Pennsylvania Climate Data

Monthly Average Climate Data for Lemont Pennsylvania

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.2 °F34.6 °F2.69 in.
February19.1 °F37.7 °F2.23 in.
March26.2 °F46.6 °F3.29 in.
April36.7 °F60.1 °F3.56 in.
May47.0 °F70.6 °F3.86 in.
June56.0 °F78.2 °F3.93 in.
July60.2 °F82.5 °F3.82 in.
August58.4 °F80.7 °F3.98 in.
September51.1 °F73.8 °F4.09 in.
October40.1 °F61.9 °F3.6 in.
November30.9 °F50.1 °F2.62 in.
December23.6 °F39.0 °F3.07 in.
Annual39 °F59.7 °F40.74 in.

Climate Data for Lemont 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 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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