Shirley Illinois Climate Data

Monthly Average Climate Data for Shirley Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.7 °C0.4 °C58.17 mm
February-6.8 °C3.2 °C49.78 mm
March-1.6 °C9.8 °C68.58 mm
April4.4 °C17.2 °C97.54 mm
May10.8 °C23.2 °C114.81 mm
June16.2 °C28.1 °C109.73 mm
July17.9 °C29.8 °C99.82 mm
August16.8 °C28.7 °C94.23 mm
September12.4 °C25.9 °C84.84 mm
October6 °C18.6 °C85.6 mm
November-0.2 °C10.3 °C71.37 mm
December-5.5 °C3.3 °C59.94 mm
Annual5.1 °C16.5 °C994.41 mm

Climate Data for Shirley 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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