Glencoe Illinois Climate Data

Monthly Average Climate Data for Glencoe Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.7 °F31.8 °F2.08 in.
February21.5 °F35.4 °F1.99 in.
March30.0 °F45.0 °F2.19 in.
April39.9 °F56.5 °F3.78 in.
May50.2 °F68.1 °F4.65 in.
June60.3 °F78.0 °F4.26 in.
July66.9 °F82.7 °F3.68 in.
August66.4 °F81.2 °F4.09 in.
September58.9 °F74.5 °F3.38 in.
October46.5 °F62.7 °F3.5 in.
November34.8 °F48.3 °F2.63 in.
December24.7 °F37.0 °F2.27 in.
Annual43.2 °F58.4 °F38.5 in.

Climate Data for Glencoe Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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