Blairstown Iowa Climate Data

Monthly Average Climate Data for Blairstown Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.5 °C-2.2 °C28.7 mm
February-9.5 °C0.4 °C32.51 mm
March-3.2 °C7.8 °C53.59 mm
April2.9 °C15.7 °C94.23 mm
May9.8 °C21.8 °C119.89 mm
June15.6 °C27 °C135.89 mm
July17.4 °C28.8 °C107.19 mm
August15.9 °C27.8 °C107.7 mm
September11.1 °C24.4 °C91.95 mm
October4.4 °C17.1 °C72.39 mm
November-2.3 °C8.4 °C53.59 mm
December-8.1 °C0.9 °C40.13 mm
Annual3.5 °C14.8 °C937.76 mm

Climate Data for Blairstown 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 : -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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