Iola Illinois Climate Data

Monthly Average Climate Data for Iola Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.9 °F38.0 °F3.12 in.
February25.0 °F42.9 °F2.49 in.
March33.7 °F53.5 °F3.59 in.
April44.1 °F66.1 °F4.78 in.
May54.8 °F75.7 °F4.99 in.
June63.7 °F84.5 °F4.86 in.
July66.6 °F87.5 °F4.19 in.
August64.2 °F86.5 °F3.48 in.
September56.1 °F80.7 °F3.28 in.
October44.9 °F68.9 °F3.4 in.
November34.7 °F54.1 °F3.91 in.
December26.5 °F42.4 °F2.99 in.
Annual44.7 °F65.1 °F45.08 in.

Climate Data for Iola Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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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