Ironton Minnesota Climate Data

Monthly Average Climate Data for Ironton Minnesota

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-17.9 °C-7.3 °C20.32 mm
February-16.4 °C-4.2 °C21.08 mm
March-8.9 °C3.1 °C36.83 mm
April-1 °C10.9 °C58.67 mm
May6.4 °C18.3 °C87.88 mm
June12.2 °C23.7 °C110.74 mm
July14.4 °C26.3 °C114.3 mm
August12.9 °C25.1 °C90.93 mm
September8.2 °C20.4 °C75.44 mm
October1.5 °C12.3 °C71.12 mm
November-5.6 °C3.3 °C35.31 mm
December-12.8 °C-4.1 °C24.64 mm
Annual-0.6 °C10.7 °C747.26 mm

Climate Data for Ironton Minnesota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -34.4°C to -31.7°C
Plant Hardiness Zone - 2012Zone 3b : -37.2°C to -34.4°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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