Iron River weather by month
What a typical year looks like in Iron River, Michigan: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Stambaugh 2sse, 5 km from Iron River; records cover 1896–2026.
The year at a glance
- Precipitation a year
- 30.5 in775 mm
- Snow a year
- 67 in171 cm
- Last spring freeze
- Jun 5
- First fall freeze
- Sep 6
- Heating degree days
- 9,776
- Cooling degree days
- 152
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −27°−33° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Iron River in January
Highs average 21°−6° and lows 0°−18°, with 1.1 in28 mm of precipitation and 15 in37 cm of snow in a typical January.
- Record high
- 55°13° (1981)
- Record low
- −43°−42° (1915)
- Heating degree days
- 1682
- Cooling degree days
- 0
Iron River in February
Highs average 26°−4° and lows 0°−18°, with 0.96 in24 mm of precipitation and 13 in32 cm of snow in a typical February.
- Record high
- 66°19° (2024)
- Record low
- −47°−44° (1899)
- Heating degree days
- 1462
- Cooling degree days
- 0
Iron River in March
Highs average 37°3° and lows 9°−13°, with 1.5 in38 mm of precipitation and 9 in22 cm of snow in a typical March.
- Record high
- 83°28° (1910)
- Record low
- −33°−36° (2014)
- Heating degree days
- 1299
- Cooling degree days
- 0
Iron River in April
Highs average 50°10° and lows 24°−4°, with 2.6 in65 mm of precipitation and 7 in19 cm of snow in a typical April.
- Record high
- 92°33° (1980)
- Record low
- −12°−24° (1924)
- Heating degree days
- 843
- Cooling degree days
- 0
Iron River in May
Highs average 64°18° and lows 37°3°, with 3.2 in81 mm of precipitation and 0.3 in0.8 cm of snow in a typical May.
- Record high
- 100°38° (1934)
- Record low
- 10°−12° (1903)
- Heating degree days
- 452
- Cooling degree days
- 8
Iron River in June
Highs average 73°23° and lows 47°8°, with 4 in102 mm of precipitation in a typical June.
- Record high
- 98°37° (1910)
- Record low
- 23°−5° (1927)
- Heating degree days
- 181
- Cooling degree days
- 33
Iron River in July
Highs average 77°25° and lows 50°10°, with 4.2 in105 mm of precipitation in a typical July.
- Record high
- 103°39° (1936)
- Record low
- 27°−3° (1910)
- Heating degree days
- 102
- Cooling degree days
- 62
Iron River in August
Highs average 75°24° and lows 48°9°, with 3.1 in79 mm of precipitation in a typical August.
- Record high
- 100°38° (1947)
- Record low
- 26°−3° (1915)
- Heating degree days
- 146
- Cooling degree days
- 36
Iron River in September
Highs average 67°20° and lows 41°5°, with 3.5 in88 mm of precipitation in a typical September.
- Record high
- 96°36° (1929)
- Record low
- 15°−9° (1918)
- Heating degree days
- 341
- Cooling degree days
- 13
Iron River in OctoberThis month
Highs average 53°12° and lows 31°−1°, with 3.3 in84 mm of precipitation and 2.1 in5.3 cm of snow in a typical October.
- Record high
- 88°31° (1976)
- Record low
- 2°−17° (1933)
- Heating degree days
- 718
- Cooling degree days
- 0
Iron River in November
Highs average 38°3° and lows 21°−6°, with 1.8 in45 mm of precipitation and 8 in21 cm of snow in a typical November.
- Record high
- 75°24° (1944)
- Record low
- −17°−27° (1991)
- Heating degree days
- 1074
- Cooling degree days
- 0
Iron River in December
Highs average 26°−3° and lows 9°−13°, with 1.5 in37 mm of precipitation and 14 in35 cm of snow in a typical December.
- Record high
- 59°15° (1982)
- Record low
- −41° (1983)
- Heating degree days
- 1476
- Cooling degree days
- 0