Downs Illinois Climate Data

Monthly Average Climate Data for Downs Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.4 °F32.5 °F2.23 in.
February19.9 °F37.4 °F1.96 in.
March29.1 °F49.2 °F2.67 in.
April40.2 °F62.4 °F3.81 in.
May51.9 °F73.2 °F4.4 in.
June61.4 °F82.0 °F4.36 in.
July64.6 °F85.0 °F4.07 in.
August62.4 °F83.1 °F3.65 in.
September54.7 °F78.1 °F3.39 in.
October43.1 °F65.1 °F3.41 in.
November31.7 °F50.3 °F2.81 in.
December22.2 °F37.6 °F2.34 in.
Annual41.5 °F61.3 °F39.1 in.

Climate Data for Downs Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°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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