Atlantic Iowa Climate Data

Monthly Average Climate Data for Atlantic Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.7 °F30.4 °F0.86 in.
February15.7 °F35.3 °F1.19 in.
March26.7 °F48.5 °F1.91 in.
April37.4 °F61.5 °F3.61 in.
May49.8 °F71.7 °F5.41 in.
June60.2 °F81.4 °F4.58 in.
July63.9 °F84.8 °F3.9 in.
August61.2 °F83.0 °F4.07 in.
September51.9 °F76.8 °F3.37 in.
October39.7 °F64.1 °F2.86 in.
November27.2 °F48.2 °F1.67 in.
December17.2 °F35.3 °F1.39 in.
Annual38.6 °F60.1 °F34.82 in.

Climate Data for Atlantic Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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