Athelstan Iowa Climate Data

Monthly Average Climate Data for Athelstan Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F32.4 °F0.87 in.
February17.9 °F37.8 °F1.31 in.
March28.3 °F50.3 °F2.25 in.
April39.1 °F62.3 °F3.79 in.
May50.9 °F72.2 °F5.46 in.
June60.8 °F81.1 °F5.34 in.
July65.1 °F85.7 °F4.67 in.
August62.7 °F84.1 °F4.09 in.
September53.7 °F77.1 °F3.46 in.
October41.3 °F64.8 °F3.11 in.
November29.5 °F49.7 °F2.04 in.
December19.2 °F37.2 °F1.37 in.
Annual40.2 °F61.2 °F37.76 in.

Climate Data for Athelstan Iowa

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