Mountain Iron Minnesota Climate Data

Monthly Average Climate Data for Mountain Iron Minnesota

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January-3.0 °F17.2 °F0.95 in.
February-0.1 °F23.2 °F0.75 in.
March13.2 °F36.1 °F1.09 in.
April27.1 °F49.8 °F1.92 in.
May39.7 °F63.7 °F3.0 in.
June50.2 °F72.9 °F4.24 in.
July54.9 °F77.5 °F4.17 in.
August52.3 °F75.7 °F3.29 in.
September45.0 °F66.9 °F3.47 in.
October33.3 °F51.9 °F2.71 in.
November19.4 °F34.7 °F1.5 in.
December5.9 °F22.2 °F1.14 in.
Annual28.2 °F49.3 °F28.23 in.

Climate Data for Mountain Iron Minnesota

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 11 - Jun. 20
Average Days With FrostOver 180 Days
Plant Hardiness Zone - 2023Zone 3b : -35°F to -30°F
Plant Hardiness Zone - 2012Zone 3b : -35°F to -30°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year