Sibley Iowa Climate Data

Monthly Average Climate Data for Sibley Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-14.3 °C-4.4 °C18.8 mm
February-12 °C-1.9 °C21.59 mm
March-5.7 °C5.1 °C40.39 mm
April0.9 °C13.7 °C80.26 mm
May8.1 °C20.6 °C102.87 mm
June14.4 °C26.3 °C122.68 mm
July16.4 °C28.1 °C87.38 mm
August14.9 °C26.8 °C87.12 mm
September9.9 °C23.3 °C84.33 mm
October2.7 °C15.6 °C60.45 mm
November-4.7 °C6.1 °C36.07 mm
December-11.1 °C-1.8 °C25.4 mm
Annual1.6 °C13.1 °C767.34 mm

Climate Data for Sibley Iowa

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4b : -31.7°C to -28.9°C
Plant Hardiness Zone - 2012Zone 4b : -31.7°C to -28.9°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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