Bertram Iowa Climate Data

Monthly Average Climate Data for Bertram Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.1 °C-1.7 °C31.24 mm
February-8.9 °C0.8 °C36.32 mm
March-2.8 °C8.2 °C55.37 mm
April3.4 °C16.3 °C98.04 mm
May9.9 °C22.2 °C120.14 mm
June15.6 °C27.3 °C140.97 mm
July17.5 °C29.1 °C115.32 mm
August16.1 °C28.1 °C111.25 mm
September11.3 °C24.7 °C98.3 mm
October4.7 °C17.4 °C75.69 mm
November-1.8 °C8.7 °C57.66 mm
December-7.6 °C1.3 °C43.43 mm
Annual3.9 °C15.2 °C983.73 mm

Climate Data for Bertram 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 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
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