Duncombe Iowa Climate Data

Monthly Average Climate Data for Duncombe Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.1 °F26.4 °F0.9 in.
February13.0 °F30.8 °F1.13 in.
March24.9 °F44.1 °F2.06 in.
April36.1 °F59.2 °F3.76 in.
May48.7 °F70.6 °F5.05 in.
June59.6 °F80.5 °F5.48 in.
July62.9 °F83.4 °F4.23 in.
August60.0 °F81.1 °F4.57 in.
September51.1 °F75.3 °F3.26 in.
October38.5 °F62.2 °F2.59 in.
November26.2 °F45.6 °F1.69 in.
December15.2 °F31.9 °F1.36 in.
Annual37.1 °F57.6 °F36.08 in.

Climate Data for Duncombe 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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