Rantoul Illinois Climate Data

Monthly Average Climate Data for Rantoul Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.2 °C0.7 °C57.15 mm
February-6.5 °C3.2 °C50.8 mm
March-1.4 °C9.7 °C69.09 mm
April4.4 °C17.2 °C101.09 mm
May11.2 °C23.5 °C112.27 mm
June16.3 °C28.2 °C117.35 mm
July17.8 °C29.6 °C107.44 mm
August16.5 °C28.8 °C88.65 mm
September12.3 °C26.2 °C80.52 mm
October5.8 °C18.9 °C84.58 mm
November-0.1 °C10.4 °C76.45 mm
December-5.1 °C3.4 °C59.18 mm
Annual5.3 °C16.7 °C1004.57 mm

Climate Data for Rantoul Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°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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