Shell Rock Iowa Climate Data

Monthly Average Climate Data for Shell Rock Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.9 °F26.2 °F0.99 in.
February13.1 °F30.5 °F1.11 in.
March24.7 °F43.9 °F1.94 in.
April36.3 °F58.7 °F3.9 in.
May48.9 °F70.5 °F4.96 in.
June59.7 °F80.2 °F5.83 in.
July62.8 °F83.1 °F4.54 in.
August59.9 °F81.1 °F4.15 in.
September51.3 °F75.2 °F3.5 in.
October38.8 °F61.7 °F2.71 in.
November26.5 °F45.4 °F1.83 in.
December15.5 °F31.9 °F1.47 in.
Annual37.2 °F57.4 °F36.93 in.

Climate Data for Shell Rock Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost150-180 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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