Streamwood Illinois Climate Data

Monthly Average Climate Data for Streamwood Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.6 °F30.4 °F2.0 in.
February17.3 °F34.3 °F1.89 in.
March26.8 °F46.0 °F2.26 in.
April37.0 °F58.7 °F3.82 in.
May48.0 °F70.2 °F5.03 in.
June58.0 °F80.1 °F4.64 in.
July63.1 °F84.2 °F3.8 in.
August61.6 °F82.0 °F4.19 in.
September53.5 °F75.2 °F3.52 in.
October41.5 °F62.1 °F3.39 in.
November30.4 °F47.7 °F2.53 in.
December20.6 °F35.7 °F2.14 in.
Annual39.4 °F58.9 °F39.21 in.

Climate Data for Streamwood 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation