Plainfield Illinois Climate Data

Monthly Average Climate Data for Plainfield Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.9 °F31.5 °F2.13 in.
February18.7 °F35.4 °F1.96 in.
March28.4 °F47.4 °F2.52 in.
April38.9 °F60.5 °F4.01 in.
May49.8 °F71.4 °F4.79 in.
June59.9 °F80.9 °F4.69 in.
July63.7 °F84.4 °F4.21 in.
August62.2 °F82.6 °F4.2 in.
September54.4 °F77.0 °F3.35 in.
October42.3 °F63.9 °F3.44 in.
November31.6 °F49.2 °F2.51 in.
December21.8 °F36.7 °F2.23 in.
Annual40.6 °F60.1 °F40.04 in.

Climate Data for Plainfield Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation