Promise City Iowa Climate Data

Monthly Average Climate Data for Promise City Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.3 °C-0.2 °C28.19 mm
February-8.1 °C2.6 °C37.34 mm
March-2.2 °C9.7 °C57.15 mm
April3.8 °C16.3 °C100.58 mm
May10.2 °C21.7 °C137.92 mm
June15.7 °C27 °C136.91 mm
July18.1 °C29.4 °C115.82 mm
August16.7 °C28.6 °C109.22 mm
September11.8 °C24.8 °C97.54 mm
October5.1 °C17.8 °C74.68 mm
November-1.7 °C9.6 °C52.58 mm
December-7.1 °C2.7 °C38.61 mm
Annual4.3 °C15.8 °C986.54 mm

Climate Data for Promise City 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 : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com