Chestnut Illinois Climate Data

Monthly Average Climate Data for Chestnut Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.7 °C1.4 °C56.64 mm
February-5.9 °C4.2 °C52.07 mm
March-0.8 °C10.6 °C69.34 mm
April5.2 °C17.8 °C100.84 mm
May11.6 °C23.5 °C109.98 mm
June16.7 °C28.4 °C112.27 mm
July18.3 °C29.9 °C105.92 mm
August17.2 °C29 °C82.55 mm
September12.6 °C26.3 °C76.2 mm
October6.2 °C19.2 °C81.79 mm
November0.2 °C10.9 °C73.66 mm
December-4.6 °C4.2 °C57.66 mm
Annual5.8 °C17.1 °C978.92 mm

Climate Data for Chestnut 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 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com