Grandview Iowa Climate Data

Monthly Average Climate Data for Grandview Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.5 °F31.0 °F1.37 in.
February18.2 °F35.6 °F1.69 in.
March28.7 °F48.5 °F2.44 in.
April39.7 °F62.0 °F3.61 in.
May51.6 °F72.5 °F4.96 in.
June61.5 °F81.7 °F4.98 in.
July65.0 °F85.2 °F3.88 in.
August62.6 °F83.3 °F4.06 in.
September54.1 °F77.3 °F3.45 in.
October42.3 °F64.3 °F2.78 in.
November30.6 °F49.1 °F2.21 in.
December20.4 °F36.2 °F1.8 in.
Annual40.8 °F60.6 °F37.23 in.

Climate Data for Grandview 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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