Grundy Center Iowa Climate Data

Monthly Average Climate Data for Grundy Center Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.3 °F26.5 °F0.91 in.
February13.5 °F31.2 °F1.08 in.
March24.9 °F44.4 °F2.09 in.
April36.2 °F58.9 °F3.83 in.
May48.9 °F70.4 °F4.87 in.
June59.6 °F80.1 °F5.79 in.
July62.7 °F83.0 °F4.28 in.
August59.9 °F81.1 °F4.37 in.
September51.1 °F75.2 °F3.33 in.
October39.0 °F62.0 °F2.72 in.
November26.7 °F45.6 °F1.9 in.
December15.9 °F32.3 °F1.46 in.
Annual37.3 °F57.6 °F36.63 in.

Climate Data for Grundy Center 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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