Ishpeming weather by month
What a typical year looks like in Ishpeming, Michigan: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Marquette County Airport FAA, 12 km from Ishpeming; records cover 1961–2026.
The year at a glance
- Precipitation a year
- 36.7 in932 mm
- Snow a year
- 197 in500 cm
- Last spring freeze
- May 22
- First fall freeze
- Sep 29
- Heating degree days
- 9,217
- Cooling degree days
- 237
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −15°−26° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Ishpeming in January
Highs average 22°−6° and lows 7°−14°, with 2.3 in59 mm of precipitation and 42 in107 cm of snow in a typical January.
- Record high
- 53°12° (1973)
- Record low
- −32°−36° (1977)
- Heating degree days
- 1570
- Cooling degree days
- 0
Ishpeming in February
Highs average 25°−4° and lows 7°−14°, with 2.2 in57 mm of precipitation and 37 in93 cm of snow in a typical February.
- Record high
- 61°16° (1981)
- Record low
- −34°−37° (1979)
- Heating degree days
- 1376
- Cooling degree days
- 0
Ishpeming in March
Highs average 35°2° and lows 15°−9°, with 2.7 in68 mm of precipitation and 29 in75 cm of snow in a typical March.
- Record high
- 81°27° (2012)
- Record low
- −30°−34° (2003)
- Heating degree days
- 1240
- Cooling degree days
- 0
Ishpeming in April
Highs average 47°8° and lows 27°−3°, with 3.4 in85 mm of precipitation and 18 in45 cm of snow in a typical April.
- Record high
- 92°33° (1980)
- Record low
- −9°−23° (2003)
- Heating degree days
- 846
- Cooling degree days
- 0
Ishpeming in May
Highs average 62°17° and lows 40°4°, with 3.4 in86 mm of precipitation and 1.4 in3.6 cm of snow in a typical May.
- Record high
- 95°35° (1969)
- Record low
- 17°−8° (1983)
- Heating degree days
- 457
- Cooling degree days
- 12
Ishpeming in June
Highs average 72°22° and lows 50°10°, with 3.3 in83 mm of precipitation in a typical June.
- Record high
- 99°37° (1963)
- Record low
- 25°−4° (1964)
- Heating degree days
- 174
- Cooling degree days
- 47
Ishpeming in July
Highs average 76°24° and lows 55°13°, with 3.1 in79 mm of precipitation in a typical July.
- Record high
- 99°37° (1977)
- Record low
- 34°1° (1967)
- Heating degree days
- 82
- Cooling degree days
- 90
Ishpeming in August
Highs average 74°23° and lows 53°12°, with 2.9 in72 mm of precipitation in a typical August.
- Record high
- 96°36° (2001)
- Record low
- 31°−1° (1976)
- Heating degree days
- 105
- Cooling degree days
- 63
Ishpeming in September
Highs average 66°19° and lows 46°8°, with 4 in101 mm of precipitation and 0.1 in0.3 cm of snow in a typical September.
- Record high
- 95°35° (2023)
- Record low
- 21°−6° (1965)
- Heating degree days
- 285
- Cooling degree days
- 24
Ishpeming in OctoberThis month
Highs average 52°11° and lows 35°2°, with 4 in103 mm of precipitation and 5 in13 cm of snow in a typical October.
- Record high
- 87°31° (1992)
- Record low
- 9°−13° (1969)
- Heating degree days
- 669
- Cooling degree days
- 1
Ishpeming in November
Highs average 37°3° and lows 24°−4°, with 2.9 in74 mm of precipitation and 24 in61 cm of snow in a typical November.
- Record high
- 75°24° (2020)
- Record low
- −13°−25° (1976)
- Heating degree days
- 1026
- Cooling degree days
- 0
Ishpeming in December
Highs average 27°−3° and lows 14°−10°, with 2.6 in66 mm of precipitation and 40 in101 cm of snow in a typical December.
- Record high
- 59°15° (1982)
- Record low
- −28°−33° (1983)
- Heating degree days
- 1387
- Cooling degree days
- 0