Donnellson Illinois Climate Data

Monthly Average Climate Data for Donnellson Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.6 °F36.6 °F2.77 in.
February24.3 °F42.0 °F2.32 in.
March33.2 °F52.9 °F3.14 in.
April43.5 °F65.6 °F4.85 in.
May54.4 °F75.5 °F5.03 in.
June63.2 °F84.3 °F4.47 in.
July66.5 °F87.3 °F3.99 in.
August64.1 °F86.1 °F3.36 in.
September55.9 °F80.4 °F3.15 in.
October44.4 °F68.3 °F3.27 in.
November34.4 °F53.2 °F3.53 in.
December25.7 °F41.5 °F2.62 in.
Annual44.2 °F64.5 °F42.5 in.

Climate Data for Donnellson Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 11 - Apr. 20
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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