Grand Mound Iowa Climate Data

Monthly Average Climate Data for Grand Mound Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.6 °C-1.5 °C33.53 mm
February-8.6 °C0.9 °C40.39 mm
March-2.5 °C8.2 °C61.47 mm
April3.7 °C15.8 °C97.28 mm
May10.3 °C22 °C120.65 mm
June15.9 °C27.1 °C124.21 mm
July17.8 °C28.8 °C109.73 mm
August16.6 °C27.7 °C114.05 mm
September11.9 °C24.6 °C98.04 mm
October5.3 °C17.3 °C76.2 mm
November-1.3 °C8.9 °C55.37 mm
December-7.1 °C1.6 °C45.97 mm
Annual4.3 °C15.1 °C976.89 mm

Climate Data for Grand Mound Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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