Mark Illinois Climate Data

Monthly Average Climate Data for Mark Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.5 °C-0.5 °C44.7 mm
February-7.5 °C2 °C44.96 mm
March-2.1 °C8.9 °C61.47 mm
April3.9 °C16.5 °C86.87 mm
May10.4 °C22.6 °C113.28 mm
June15.8 °C27.4 °C110.49 mm
July17.8 °C29.1 °C98.04 mm
August16.6 °C28.1 °C99.06 mm
September11.9 °C25 °C87.88 mm
October5.6 °C18.1 °C73.66 mm
November-0.7 °C9.6 °C61.72 mm
December-6.2 °C2.4 °C49.28 mm
Annual4.7 °C15.8 °C931.41 mm

Climate Data for Mark Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°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
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