Clayton Iowa Climate Data

Monthly Average Climate Data for Clayton Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.3 °F26.2 °F1.25 in.
February12.8 °F30.9 °F1.23 in.
March24.8 °F43.5 °F1.99 in.
April36.4 °F57.6 °F3.79 in.
May48.1 °F69.3 °F4.63 in.
June58.4 °F78.8 °F5.79 in.
July62.3 °F82.3 °F4.63 in.
August60.1 °F80.5 °F3.89 in.
September51.7 °F73.7 °F3.82 in.
October39.6 °F60.7 °F2.81 in.
November27.5 °F44.9 °F2.08 in.
December16.5 °F31.9 °F1.59 in.
Annual37.3 °F56.7 °F37.5 in.

Climate Data for Clayton Iowa

Average First Frost DateOct. 11 - Oct. 20
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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