New Lenox Illinois Climate Data

Monthly Average Climate Data for New Lenox Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.6 °C-0.1 °C54.36 mm
February-7.1 °C2.1 °C52.83 mm
March-1.8 °C8.6 °C61.98 mm
April4.1 °C15.8 °C98.81 mm
May10 °C21.8 °C119.63 mm
June15.6 °C27.2 °C117.09 mm
July18.1 °C29.2 °C116.08 mm
August17.2 °C28.2 °C105.16 mm
September12.9 °C24.9 °C86.87 mm
October6.1 °C17.6 °C85.85 mm
November0.2 °C9.6 °C63.25 mm
December-5.4 °C2.8 °C55.37 mm
Annual5.1 °C15.6 °C1017.28 mm

Climate Data for New Lenox 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation