Apple River Illinois Climate Data

Monthly Average Climate Data for Apple River Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January10.9 °F27.2 °F1.41 in.
February14.3 °F31.5 °F1.59 in.
March25.3 °F44.0 °F2.17 in.
April36.2 °F57.7 °F3.91 in.
May48.0 °F69.4 °F4.38 in.
June58.1 °F78.8 °F5.72 in.
July61.7 °F81.9 °F4.67 in.
August59.5 °F80.2 °F4.15 in.
September51.2 °F73.7 °F3.71 in.
October39.6 °F60.9 °F2.96 in.
November28.6 °F45.7 °F2.41 in.
December17.6 °F32.8 °F1.8 in.
Annual37.6 °F57 °F38.88 in.

Climate Data for Apple River Illinois

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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