Bonaparte Iowa Climate Data

Monthly Average Climate Data for Bonaparte Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.7 °F33.5 °F1.47 in.
February20.1 °F38.1 °F1.78 in.
March30.7 °F50.7 °F2.32 in.
April41.5 °F64.2 °F3.74 in.
May52.9 °F74.4 °F5.33 in.
June62.5 °F83.6 °F4.86 in.
July66.4 °F87.4 °F4.13 in.
August64.3 °F85.9 °F3.75 in.
September55.8 °F78.7 °F3.71 in.
October44.2 °F65.4 °F3.0 in.
November32.6 °F50.7 °F2.29 in.
December22.5 °F38.4 °F1.76 in.
Annual42.5 °F62.6 °F38.14 in.

Climate Data for Bonaparte Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°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