Allerton Iowa Climate Data

Monthly Average Climate Data for Allerton Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.2 °F31.5 °F1.11 in.
February17.1 °F36.4 °F1.44 in.
March27.9 °F49.2 °F2.29 in.
April38.7 °F60.9 °F3.91 in.
May50.4 °F70.8 °F5.44 in.
June60.3 °F80.2 °F5.69 in.
July64.7 °F84.7 °F4.59 in.
August62.0 °F83.1 °F4.29 in.
September53.0 °F76.5 °F3.83 in.
October41.0 °F63.9 °F2.98 in.
November28.6 °F49.0 °F1.99 in.
December18.8 °F37.0 °F1.54 in.
Annual39.6 °F60.3 °F39.1 in.

Climate Data for Allerton 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 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