Colwell Iowa Climate Data

Monthly Average Climate Data for Colwell Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.5 °F24.3 °F0.99 in.
February11.5 °F28.5 °F1.11 in.
March23.4 °F41.4 °F1.92 in.
April35.3 °F57.1 °F3.81 in.
May47.5 °F69.1 °F5.08 in.
June58.1 °F78.6 °F6.15 in.
July61.4 °F81.6 °F4.71 in.
August58.7 °F79.5 °F4.25 in.
September50.3 °F73.6 °F3.74 in.
October37.8 °F60.2 °F2.75 in.
November25.7 °F43.4 °F1.75 in.
December14.4 °F29.9 °F1.4 in.
Annual36 °F55.6 °F37.66 in.

Climate Data for Colwell Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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