Gridley Illinois Climate Data

Monthly Average Climate Data for Gridley Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.9 °C0.2 °C54.1 mm
February-7 °C2.8 °C46.48 mm
March-1.7 °C9.6 °C65.79 mm
April4.2 °C17 °C92.96 mm
May10.8 °C23.2 °C113.03 mm
June16.1 °C27.9 °C102.62 mm
July17.8 °C29.6 °C97.54 mm
August16.6 °C28.6 °C87.12 mm
September12.2 °C25.7 °C84.58 mm
October5.9 °C18.6 °C83.31 mm
November-0.3 °C10.1 °C66.8 mm
December-5.7 °C3.1 °C51.56 mm
Annual5 °C16.4 °C945.89 mm

Climate Data for Gridley 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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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