Gilman Iowa Climate Data

Monthly Average Climate Data for Gilman Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.1 °F27.9 °F0.94 in.
February15.0 °F32.6 °F1.16 in.
March26.0 °F45.7 °F2.02 in.
April37.1 °F59.9 °F4.09 in.
May49.9 °F70.8 °F4.79 in.
June60.2 °F80.3 °F5.57 in.
July63.8 °F83.5 °F4.45 in.
August61.1 °F81.5 °F4.4 in.
September52.3 °F75.8 °F3.39 in.
October40.1 °F62.7 °F2.65 in.
November27.9 °F46.6 °F2.08 in.
December17.2 °F33.5 °F1.39 in.
Annual38.5 °F58.4 °F36.93 in.

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