Newton Illinois Climate Data

Monthly Average Climate Data for Newton Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.8 °C3.2 °C82.55 mm
February-4.2 °C5.8 °C66.04 mm
March0.8 °C11.8 °C91.44 mm
April6.5 °C18.7 °C124.71 mm
May12.5 °C24 °C127 mm
June17.4 °C28.7 °C135.13 mm
July18.9 °C30.6 °C109.22 mm
August17.8 °C30 °C76.71 mm
September13.3 °C27 °C81.53 mm
October7.1 °C20.3 °C91.95 mm
November1.3 °C12.2 °C94.74 mm
December-3.2 °C5.7 °C81.53 mm
Annual6.9 °C18.2 °C1162.55 mm

Climate Data for Newton 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 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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