Mackinaw Illinois Climate Data

Monthly Average Climate Data for Mackinaw Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.7 °C0.6 °C56.39 mm
February-6.8 °C3.3 °C49.53 mm
March-1.4 °C10.1 °C65.53 mm
April4.5 °C17.3 °C96.77 mm
May10.8 °C23.2 °C119.38 mm
June16.2 °C28 °C108.46 mm
July17.9 °C29.8 °C100.84 mm
August16.7 °C28.9 °C92.2 mm
September12.3 °C26.3 °C83.82 mm
October5.8 °C18.9 °C78.99 mm
November-0.3 °C10.6 °C74.93 mm
December-5.6 °C3.5 °C57.4 mm
Annual5.1 °C16.7 °C984.24 mm

Climate Data for Mackinaw Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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