Stockton Illinois Climate Data

Monthly Average Climate Data for Stockton Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.3 °C-2.6 °C33.78 mm
February-9.4 °C-0.2 °C39.88 mm
March-3.6 °C6.8 °C53.59 mm
April2.4 °C14.4 °C97.54 mm
May9 °C20.9 °C108.46 mm
June14.6 °C25.9 °C143.76 mm
July16.3 °C27.6 °C116.08 mm
August15.2 °C26.6 °C102.11 mm
September10.6 °C23.3 °C90.68 mm
October4.3 °C16.2 °C73.41 mm
November-1.8 °C7.6 °C59.69 mm
December-7.8 °C0.4 °C44.45 mm
Annual3.2 °C13.9 °C963.43 mm

Climate Data for Stockton Illinois

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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