Monona Iowa Climate Data

Monthly Average Climate Data for Monona Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-13.2 °C-3.9 °C29.46 mm
February-11.4 °C-1.4 °C30.23 mm
March-4.7 °C5.8 °C53.34 mm
April1.8 °C13.7 °C103.89 mm
May8.3 °C20.3 °C124.21 mm
June14.4 °C25.7 °C150.62 mm
July16.3 °C27.5 °C116.84 mm
August14.9 °C26.5 °C108.2 mm
September10.3 °C22.8 °C98.55 mm
October3.4 °C15.6 °C73.41 mm
November-3.1 °C6.5 °C51.56 mm
December-9.4 °C-0.7 °C38.61 mm
Annual2.3 °C13.2 °C978.92 mm

Climate Data for Monona Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
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 ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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