Carbondale Illinois Climate Data

Monthly Average Climate Data for Carbondale Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.8 °F41.0 °F3.34 in.
February27.3 °F46.1 °F3.09 in.
March35.5 °F56.1 °F4.33 in.
April45.7 °F67.4 °F5.39 in.
May56.1 °F76.4 °F5.38 in.
June64.7 °F85.2 °F4.67 in.
July68.3 °F87.9 °F3.89 in.
August65.6 °F87.1 °F3.15 in.
September57.1 °F81.2 °F3.21 in.
October45.5 °F70.0 °F3.71 in.
November35.7 °F56.4 °F4.36 in.
December27.9 °F45.2 °F3.67 in.
Annual46.1 °F66.7 °F48.19 in.

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 : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate