Barnum Iowa Climate Data

Monthly Average Climate Data for Barnum Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.9 °C-3.2 °C22.1 mm
February-10.7 °C-0.8 °C28.7 mm
March-4.1 °C6.7 °C51.05 mm
April2.1 °C14.9 °C94.74 mm
May9.2 °C21.2 °C125.73 mm
June15.2 °C26.7 °C134.62 mm
July17.2 °C28.3 °C102.11 mm
August15.6 °C27.1 °C114.05 mm
September10.4 °C23.7 °C78.23 mm
October3.6 °C16.6 °C63.25 mm
November-3.4 °C7.4 °C40.89 mm
December-9.5 °C-0.2 °C33.02 mm
Annual2.7 °C14 °C888.49 mm

Climate Data for Barnum 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 : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com