Armstrong Iowa Climate Data

Monthly Average Climate Data for Armstrong Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-13.7 °C-4.4 °C20.07 mm
February-11.6 °C-2.1 °C22.86 mm
March-4.8 °C5.1 °C44.7 mm
April1.8 °C13.8 °C86.11 mm
May8.8 °C20.8 °C114.55 mm
June15 °C26.4 °C125.73 mm
July16.8 °C28 °C103.12 mm
August15.3 °C26.7 °C95.25 mm
September10.6 °C23.6 °C81.03 mm
October3.3 °C15.7 °C60.96 mm
November-3.9 °C6.3 °C35.31 mm
December-10.2 °C-1.5 °C29.97 mm
Annual2.3 °C13.2 °C819.66 mm

Climate Data for Armstrong Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 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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