Atlantic Iowa Climate Data

Monthly Average Climate Data for Atlantic Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.3 °C-0.9 °C21.84 mm
February-9.1 °C1.8 °C30.23 mm
March-2.9 °C9.2 °C48.51 mm
April3 °C16.4 °C91.69 mm
May9.9 °C22.1 °C137.41 mm
June15.7 °C27.4 °C116.33 mm
July17.7 °C29.3 °C99.06 mm
August16.2 °C28.3 °C103.38 mm
September11.1 °C24.9 °C85.6 mm
October4.3 °C17.8 °C72.64 mm
November-2.7 °C9 °C42.42 mm
December-8.2 °C1.8 °C35.31 mm
Annual3.6 °C15.6 °C884.42 mm

Climate Data for Atlantic 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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com