Chillicothe Iowa Climate Data

Monthly Average Climate Data for Chillicothe Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.1 °F30.8 °F1.3 in.
February17.5 °F35.3 °F1.56 in.
March28.4 °F49.3 °F2.23 in.
April40.1 °F61.8 °F3.81 in.
May51.9 °F72.4 °F5.1 in.
June62.5 °F82.4 °F5.42 in.
July65.3 °F86.0 °F4.22 in.
August63.5 °F83.6 °F3.95 in.
September54.2 °F76.4 °F3.95 in.
October42.1 °F64.5 °F2.8 in.
November30.2 °F48.3 °F2.17 in.
December20.2 °F36.3 °F1.59 in.
Annual40.8 °F60.6 °F38.1 in.

Climate Data for Chillicothe Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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