Otterville Illinois Climate Data

Monthly Average Climate Data for Otterville Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5.9 °C3.3 °C62.23 mm
February-4.1 °C6.3 °C57.4 mm
March0.9 °C12.2 °C81.53 mm
April6.8 °C18.6 °C117.35 mm
May12.9 °C23.9 °C126.75 mm
June18.1 °C28.7 °C107.7 mm
July19.9 °C30.6 °C94.23 mm
August18.8 °C30 °C92.96 mm
September14 °C26.4 °C85.09 mm
October7.7 °C20 °C80.01 mm
November1.6 °C12.2 °C86.61 mm
December-3.3 °C5.9 °C65.53 mm
Annual7.3 °C18.2 °C1057.39 mm

Climate Data for Otterville Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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