Allison Iowa Climate Data

Monthly Average Climate Data for Allison Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.7 °F25.6 °F0.94 in.
February12.8 °F30.0 °F1.07 in.
March24.5 °F43.2 °F1.78 in.
April36.0 °F58.5 °F3.8 in.
May48.5 °F70.4 °F4.95 in.
June59.3 °F80.0 °F5.74 in.
July62.5 °F82.9 °F4.36 in.
August59.8 °F80.7 °F4.05 in.
September51.3 °F74.9 °F3.42 in.
October39.0 °F61.4 °F2.58 in.
November26.4 °F44.7 °F1.74 in.
December15.4 °F31.2 °F1.35 in.
Annual37 °F57 °F35.78 in.

Climate Data for Allison 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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