Ames Iowa Climate Data

Monthly Average Climate Data for Ames Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.7 °C-1.9 °C24.38 mm
February-9.6 °C0.6 °C29.97 mm
March-3.2 °C7.8 °C53.09 mm
April3.1 °C15.7 °C97.28 mm
May9.8 °C21.6 °C132.59 mm
June15.6 °C26.9 °C136.65 mm
July17.6 °C28.9 °C114.81 mm
August16.1 °C27.7 °C118.36 mm
September11.3 °C24.6 °C94.49 mm
October4.3 °C17.1 °C69.85 mm
November-2.3 °C8.6 °C48.01 mm
December-8.4 °C1.1 °C36.83 mm
Annual3.6 °C14.9 °C956.31 mm

Climate Data for Ames Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com