Ironton Minnesota Climate Data

Monthly Average Climate Data for Ironton Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January-0.3 °F18.9 °F0.8 in.
February2.5 °F24.5 °F0.83 in.
March15.9 °F37.5 °F1.45 in.
April30.2 °F51.6 °F2.31 in.
May43.5 °F65.0 °F3.46 in.
June53.9 °F74.7 °F4.36 in.
July57.9 °F79.4 °F4.5 in.
August55.2 °F77.2 °F3.58 in.
September46.8 °F68.8 °F2.97 in.
October34.7 °F54.1 °F2.8 in.
November22.0 °F37.9 °F1.39 in.
December8.9 °F24.6 °F0.97 in.
Annual30.9 °F51.2 °F29.42 in.

Climate Data for Ironton Minnesota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 3b : -35°F to -30°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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