Oconee Illinois Climate Data

Monthly Average Climate Data for Oconee Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.6 °C2.3 °C66.8 mm
February-4.8 °C5.2 °C55.12 mm
March0.2 °C11.3 °C76.71 mm
April5.9 °C18.4 °C116.08 mm
May12.1 °C23.9 °C121.16 mm
June17.1 °C28.8 °C119.63 mm
July18.8 °C30.5 °C100.08 mm
August17.4 °C29.8 °C81.28 mm
September13.1 °C26.9 °C81.28 mm
October6.8 °C20 °C87.38 mm
November1 °C11.6 °C88.65 mm
December-3.7 °C5 °C65.53 mm
Annual6.4 °C17.8 °C1059.7 mm

Climate Data for Oconee Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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