Quincy Illinois Climate Data

Monthly Average Climate Data for Quincy Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.4 °C1.7 °C45.21 mm
February-5.3 °C4.6 °C52.58 mm
March-0.2 °C11 °C66.29 mm
April6 °C18.1 °C102.36 mm
May12.2 °C23.4 °C125.73 mm
June17.6 °C28.4 °C118.62 mm
July19.4 °C30.7 °C99.06 mm
August18.3 °C29.8 °C99.06 mm
September13.6 °C26.1 °C89.66 mm
October7.2 °C19.2 °C80.77 mm
November0.9 °C11.2 °C67.31 mm
December-4.4 °C4.3 °C49.78 mm
Annual6.5 °C17.4 °C996.43 mm

Climate Data for Quincy Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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