Geneva Illinois Climate Data

Monthly Average Climate Data for Geneva Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.5 °C-0.8 °C50.8 mm
February-7.9 °C1.4 °C49.02 mm
March-2.6 °C8 °C59.69 mm
April3.2 °C15.2 °C95.5 mm
May9.3 °C21.4 °C124.97 mm
June14.9 °C26.8 °C111 mm
July17.4 °C28.9 °C95.76 mm
August16.4 °C27.9 °C100.08 mm
September12.1 °C24.4 °C85.34 mm
October5.4 °C17.2 °C87.88 mm
November-0.7 °C9 °C65.53 mm
December-6.2 °C2.2 °C55.88 mm
Annual4.3 °C15.1 °C981.45 mm

Climate Data for Geneva 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 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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