Carbondale Illinois Climate Data

Monthly Average Climate Data for Carbondale Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.6 °C5 °C84.84 mm
February-2.6 °C7.8 °C78.49 mm
March1.9 °C13.4 °C109.98 mm
April7.6 °C19.7 °C136.91 mm
May13.4 °C24.7 °C136.65 mm
June18.2 °C29.6 °C118.62 mm
July20.2 °C31.1 °C98.81 mm
August18.7 °C30.6 °C80.01 mm
September13.9 °C27.3 °C81.53 mm
October7.5 °C21.1 °C94.23 mm
November2.1 °C13.6 °C110.74 mm
December-2.3 °C7.3 °C93.22 mm
Annual7.8 °C19.3 °C1224.03 mm

Climate Data for Carbondale Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate