Jonesboro Illinois Climate Data

Monthly Average Climate Data for Jonesboro Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.1 °C5.6 °C93.73 mm
February-2.3 °C8.4 °C83.57 mm
March2.3 °C13.8 °C120.14 mm
April7.8 °C20.1 °C138.43 mm
May13.4 °C24.9 °C144.78 mm
June18.2 °C29.7 °C119.38 mm
July20.3 °C31.2 °C99.82 mm
August18.9 °C30.8 °C78.99 mm
September14.4 °C27.6 °C88.14 mm
October8.1 °C21.5 °C95.76 mm
November2.5 °C13.8 °C117.86 mm
December-2 °C7.6 °C102.36 mm
Annual8.1 °C19.6 °C1282.96 mm

Climate Data for Jonesboro Illinois

Average First Frost DateOct. 21 - Oct. 31
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
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