German Valley Illinois Climate Data

Monthly Average Climate Data for German Valley Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.0 °F28.3 °F1.62 in.
February15.5 °F32.5 °F1.71 in.
March25.9 °F44.9 °F2.18 in.
April36.5 °F58.5 °F3.7 in.
May48.3 °F69.9 °F4.54 in.
June58.3 °F79.2 °F5.24 in.
July61.6 °F82.0 °F4.42 in.
August59.6 °F80.6 °F3.94 in.
September51.1 °F74.3 °F3.75 in.
October39.7 °F61.6 °F2.85 in.
November28.8 °F46.5 °F2.26 in.
December18.4 °F33.7 °F1.95 in.
Annual38 °F57.7 °F38.16 in.

Climate Data for German Valley 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 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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