Oconee Illinois Climate Data

Monthly Average Climate Data for Oconee Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.1 °F36.1 °F2.63 in.
February23.4 °F41.3 °F2.17 in.
March32.4 °F52.3 °F3.02 in.
April42.7 °F65.2 °F4.57 in.
May53.8 °F75.1 °F4.77 in.
June62.7 °F83.8 °F4.71 in.
July65.8 °F86.9 °F3.94 in.
August63.4 °F85.7 °F3.2 in.
September55.6 °F80.4 °F3.2 in.
October44.3 °F68.0 °F3.44 in.
November33.8 °F52.9 °F3.49 in.
December25.4 °F41.0 °F2.58 in.
Annual43.6 °F64.1 °F41.72 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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