Lee Illinois Climate Data

Monthly Average Climate Data for Lee Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11 °C-2.1 °C40.64 mm
February-9 °C0.3 °C41.91 mm
March-3.4 °C7.3 °C55.12 mm
April2.4 °C14.8 °C88.9 mm
May9.1 °C21.3 °C122.94 mm
June14.6 °C26.4 °C120.14 mm
July16.5 °C28 °C100.58 mm
August15.2 °C26.9 °C97.03 mm
September10.6 °C23.8 °C87.88 mm
October4.1 °C16.6 °C73.15 mm
November-1.8 °C8.2 °C57.66 mm
December-7.6 °C1 °C46.23 mm
Annual3.3 °C14.4 °C932.18 mm

Climate Data for Lee Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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