Monona Iowa Climate Data

Monthly Average Climate Data for Monona Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.2 °F24.9 °F1.16 in.
February11.4 °F29.4 °F1.19 in.
March23.6 °F42.4 °F2.1 in.
April35.2 °F56.7 °F4.09 in.
May47.0 °F68.6 °F4.89 in.
June58.0 °F78.2 °F5.93 in.
July61.4 °F81.5 °F4.6 in.
August58.9 °F79.7 °F4.26 in.
September50.5 °F73.0 °F3.88 in.
October38.2 °F60.1 °F2.89 in.
November26.5 °F43.7 °F2.03 in.
December15.0 °F30.7 °F1.52 in.
Annual36.2 °F55.7 °F38.54 in.

Climate Data for Monona Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation