Unionville Iowa Climate Data

Monthly Average Climate Data for Unionville Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.2 °C-0.2 °C30.48 mm
February-8 °C2.4 °C39.12 mm
March-2.1 °C9.7 °C56.9 mm
April4.1 °C16.6 °C99.31 mm
May10.6 °C21.9 °C136.4 mm
June16.1 °C27.2 °C136.14 mm
July18.2 °C29.4 °C112.78 mm
August16.9 °C28.7 °C105.66 mm
September12.1 °C24.8 °C96.77 mm
October5.4 °C17.8 °C73.66 mm
November-1.4 °C9.6 °C54.61 mm
December-6.8 °C2.7 °C38.86 mm
Annual4.6 °C15.9 °C980.69 mm

Climate Data for Unionville Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 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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