Iron Junction weather by month
What a typical year looks like in Iron Junction, Minnesota: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Hibbing Chisholm Hibbing Airport, 17 km from Iron Junction; records cover 1938–2026.
The year at a glance
- Precipitation a year
- 24.8 in629 mm
- Snow a year
- Rare
- Last spring freeze
- Jun 1
- First fall freeze
- Sep 11
- Heating degree days
- 10,336
- Cooling degree days
- 120
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −28°−33° (heating, 99%) and 88°31° (cooling, 1%).
Month by month
Iron Junction in January
Highs average 17°−8° and lows −4°−20°, with 0.51 in13 mm of precipitation in a typical January.
- Record high
- 51°11° (1942)
- Record low
- −50°−46° (1996)
- Heating degree days
- 1821
- Cooling degree days
- 0
Iron Junction in February
Highs average 23°−5° and lows −1°−19°, with 0.53 in13 mm of precipitation in a typical February.
- Record high
- 60°16° (2011)
- Record low
- −44°−42° (1996)
- Heating degree days
- 1525
- Cooling degree days
- 0
Iron Junction in March
Highs average 35°2° and lows 12°−11°, with 0.91 in23 mm of precipitation in a typical March.
- Record high
- 80°27° (1946)
- Record low
- −37°−38° (1989)
- Heating degree days
- 1277
- Cooling degree days
- 0
Iron Junction in April
Highs average 50°10° and lows 25°−4°, with 1.6 in41 mm of precipitation in a typical April.
- Record high
- 89°32° (1952)
- Record low
- −6°−21° (1954)
- Heating degree days
- 836
- Cooling degree days
- 0
Iron Junction in May
Highs average 63°17° and lows 36°2°, with 2.8 in70 mm of precipitation in a typical May.
- Record high
- 95°35° (1939)
- Record low
- 14°−10° (1967)
- Heating degree days
- 483
- Cooling degree days
- 4
Iron Junction in June
Highs average 72°22° and lows 46°8°, with 4.4 in111 mm of precipitation in a typical June.
- Record high
- 97°36° (1995)
- Record low
- 25°−4° (1964)
- Heating degree days
- 202
- Cooling degree days
- 20
Iron Junction in July
Highs average 77°25° and lows 50°10°, with 3.9 in98 mm of precipitation in a typical July.
- Record high
- 98°37° (1988)
- Record low
- 32°0° (2001)
- Heating degree days
- 98
- Cooling degree days
- 51
Iron Junction in August
Highs average 75°24° and lows 48°9°, with 3.1 in78 mm of precipitation in a typical August.
- Record high
- 95°35° (1947)
- Record low
- 27°−3° (2004)
- Heating degree days
- 141
- Cooling degree days
- 36
Iron Junction in September
Highs average 66°19° and lows 40°5°, with 3.1 in78 mm of precipitation in a typical September.
- Record high
- 95°35° (2023)
- Record low
- 20°−7° (1965)
- Heating degree days
- 369
- Cooling degree days
- 9
Iron Junction in OctoberThis month
Highs average 51°10° and lows 30°−1°, with 2.4 in60 mm of precipitation in a typical October.
- Record high
- 87°31° (1963)
- Record low
- 0°−18° (1976)
- Heating degree days
- 767
- Cooling degree days
- 0
Iron Junction in November
Highs average 34°1° and lows 17°−8°, with 1.1 in28 mm of precipitation in a typical November.
- Record high
- 72°22° (1975)
- Record low
- −27°−33° (1985)
- Heating degree days
- 1182
- Cooling degree days
- 0
Iron Junction in December
Highs average 21°−6° and lows 3°−16°, with 0.64 in16 mm of precipitation in a typical December.
- Record high
- 60°16° (1962)
- Record low
- −38°−39° (1983)
- Heating degree days
- 1635
- Cooling degree days
- 0