Ames Iowa Climate Data

Monthly Average Climate Data for Ames Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.0 °F28.6 °F0.96 in.
February14.8 °F33.0 °F1.18 in.
March26.3 °F46.1 °F2.09 in.
April37.6 °F60.3 °F3.83 in.
May49.7 °F70.9 °F5.22 in.
June60.1 °F80.5 °F5.38 in.
July63.7 °F84.1 °F4.52 in.
August61.0 °F81.9 °F4.66 in.
September52.3 °F76.2 °F3.72 in.
October39.7 °F62.8 °F2.75 in.
November27.8 °F47.5 °F1.89 in.
December16.9 °F34.0 °F1.45 in.
Annual38.4 °F58.8 °F37.65 in.

Climate Data for Ames 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 : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation