Niles Illinois Climate Data

Monthly Average Climate Data for Niles Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.1 °F31.7 °F2.17 in.
February20.9 °F35.5 °F2.1 in.
March29.8 °F45.5 °F2.27 in.
April39.9 °F57.4 °F3.87 in.
May50.8 °F68.8 °F4.65 in.
June61.0 °F79.0 °F4.41 in.
July66.7 °F83.4 °F3.68 in.
August65.5 °F81.5 °F4.02 in.
September57.7 °F74.9 °F3.39 in.
October45.5 °F62.5 °F3.39 in.
November33.9 °F48.3 °F2.57 in.
December24.0 °F37.0 °F2.27 in.
Annual42.8 °F58.8 °F38.79 in.

Climate Data for Niles Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation