Marshall Illinois Climate Data

Monthly Average Climate Data for Marshall Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.5 °C2.7 °C72.9 mm
February-4.9 °C5.4 °C63.25 mm
March0.2 °C11.4 °C86.61 mm
April6 °C18.7 °C134.87 mm
May11.9 °C23.8 °C121.92 mm
June16.7 °C28.7 °C119.89 mm
July18.3 °C30.4 °C110.49 mm
August17.1 °C29.8 °C75.18 mm
September12.8 °C26.8 °C80.77 mm
October6.4 °C20.1 °C93.98 mm
November0.9 °C11.8 °C94.23 mm
December-3.7 °C5.2 °C72.14 mm
Annual6.3 °C17.9 °C1126.23 mm

Climate Data for Marshall 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 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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