Rathbun Iowa Climate Data

Monthly Average Climate Data for Rathbun Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.2 °C-0.1 °C26.92 mm
February-8.1 °C2.5 °C36.58 mm
March-1.9 °C9.7 °C54.1 mm
April4.1 °C16.6 °C101.6 mm
May10.6 °C22 °C136.91 mm
June16.2 °C27.3 °C135.89 mm
July18.3 °C29.6 °C116.08 mm
August17.1 °C28.7 °C104.65 mm
September12.2 °C24.7 °C96.52 mm
October5.5 °C17.8 °C74.17 mm
November-1.4 °C9.4 °C51.82 mm
December-6.8 °C2.6 °C38.61 mm
Annual4.6 °C15.9 °C973.85 mm

Climate Data for Rathbun 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 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