Brooklyn Iowa Climate Data

Monthly Average Climate Data for Brooklyn Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.3 °C-2.3 °C27.94 mm
February-9.5 °C0.4 °C35.05 mm
March-3.3 °C7.7 °C54.1 mm
April2.9 °C15.3 °C91.44 mm
May10 °C21.8 °C120.4 mm
June16.1 °C27.3 °C139.7 mm
July17.8 °C29.2 °C110.74 mm
August16.2 °C28.2 °C110.74 mm
September11.2 °C24.2 °C91.19 mm
October4.6 °C16.8 °C73.91 mm
November-2.2 °C8.2 °C53.34 mm
December-7.9 °C0.9 °C38.86 mm
Annual3.7 °C14.8 °C947.41 mm

Climate Data for Brooklyn 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 5a : -28.9°C to -26.1°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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