Niantic Illinois Climate Data

Monthly Average Climate Data for Niantic Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.4 °C1.8 °C56.39 mm
February-5.6 °C4.4 °C51.05 mm
March-0.5 °C10.8 °C69.6 mm
April5.4 °C18.1 °C104.65 mm
May11.7 °C23.7 °C115.82 mm
June16.8 °C28.5 °C117.35 mm
July18.4 °C30.1 °C98.04 mm
August17.3 °C29.3 °C83.57 mm
September12.7 °C26.4 °C79.76 mm
October6.3 °C19.6 °C83.06 mm
November0.4 °C11.2 °C77.22 mm
December-4.4 °C4.5 °C58.67 mm
Annual5.9 °C17.4 °C995.18 mm

Climate Data for Niantic 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 6a : -23.3°C to -20.6°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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