Iron River Wisconsin Climate Data

Monthly Average Climate Data for Iron River Wisconsin

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January1.2 °F20.7 °F1.18 in.
February4.1 °F26.2 °F1.05 in.
March15.7 °F38.0 °F1.71 in.
April28.1 °F50.9 °F2.79 in.
May39.6 °F65.0 °F3.5 in.
June49.6 °F73.9 °F4.11 in.
July55.2 °F78.7 °F4.31 in.
August53.5 °F76.8 °F3.81 in.
September45.9 °F68.7 °F3.5 in.
October34.2 °F54.4 °F3.23 in.
November22.6 °F38.9 °F2.08 in.
December9.6 °F25.9 °F1.64 in.
Annual29.9 °F51.5 °F32.91 in.

Climate Data for Iron River Wisconsin

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 4a : -30°F to -25°F
Plant Hardiness Zone - 2012Zone 4a : -30°F to -25°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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