Armstrong Iowa Climate Data

Monthly Average Climate Data for Armstrong Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January7.3 °F24.0 °F0.79 in.
February11.2 °F28.3 °F0.9 in.
March23.4 °F41.1 °F1.76 in.
April35.3 °F56.9 °F3.39 in.
May47.9 °F69.4 °F4.51 in.
June59.0 °F79.5 °F4.95 in.
July62.3 °F82.4 °F4.06 in.
August59.6 °F80.0 °F3.75 in.
September51.1 °F74.4 °F3.19 in.
October38.0 °F60.3 °F2.4 in.
November25.0 °F43.4 °F1.39 in.
December13.6 °F29.3 °F1.18 in.
Annual36.1 °F55.8 °F32.27 in.

Climate Data for Armstrong Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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