Aurora Illinois Climate Data

Monthly Average Climate Data for Aurora Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.3 °F31.2 °F1.93 in.
February18.1 °F35.2 °F1.92 in.
March27.8 °F47.2 °F2.37 in.
April38.4 °F60.1 °F3.87 in.
May49.4 °F71.3 °F4.87 in.
June59.4 °F80.9 °F4.49 in.
July63.6 °F84.5 °F3.86 in.
August62.0 °F82.6 °F3.91 in.
September54.2 °F76.6 °F3.29 in.
October42.0 °F63.6 °F3.53 in.
November31.1 °F48.9 °F2.57 in.
December21.3 °F36.5 °F2.18 in.
Annual40.2 °F59.9 °F38.79 in.

Climate Data for Aurora 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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation