Waterman Illinois Climate Data

Monthly Average Climate Data for Waterman Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.2 °F28.8 °F1.74 in.
February16.5 °F33.1 °F1.73 in.
March26.6 °F45.5 °F2.27 in.
April37.0 °F59.0 °F3.61 in.
May48.9 °F70.4 °F4.88 in.
June58.8 °F79.8 °F4.62 in.
July62.3 °F82.9 °F3.88 in.
August60.0 °F80.9 °F3.85 in.
September51.7 °F75.3 °F3.46 in.
October40.0 °F62.4 °F3.08 in.
November29.6 °F47.3 °F2.41 in.
December19.3 °F34.4 °F2.01 in.
Annual38.7 °F58.3 °F37.54 in.

Climate Data for Waterman Illinois

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