Alpena weather by month
What a typical year looks like in Alpena, Michigan: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Alpena County Regional Airport, 10 km from Alpena; records cover 1916–2026.
The year at a glance
- Precipitation a year
- 29.7 in754 mm
- Snow a year
- 78 in197 cm
- Last spring freeze
- May 19
- First fall freeze
- Oct 1
- Heating degree days
- 7,844
- Cooling degree days
- 351
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Alpena in January
Highs average 28°−2° and lows 12°−11°, with 1.8 in46 mm of precipitation and 19 in49 cm of snow in a typical January.
- Record high
- 62°17° (1944)
- Record low
- −28°−33° (1963)
- Heating degree days
- 1395
- Cooling degree days
- 0
Alpena in February
Highs average 30°−1° and lows 11°−12°, with 1.5 in39 mm of precipitation and 17 in43 cm of snow in a typical February.
- Record high
- 70°21° (2024)
- Record low
- −37°−38° (1979)
- Heating degree days
- 1240
- Cooling degree days
- 0
Alpena in March
Highs average 39°4° and lows 19°−7°, with 1.8 in46 mm of precipitation and 11 in27 cm of snow in a typical March.
- Record high
- 87°31° (2012)
- Record low
- −27°−33° (1962)
- Heating degree days
- 1108
- Cooling degree days
- 0
Alpena in April
Highs average 52°11° and lows 30°−1°, with 2.9 in74 mm of precipitation and 7 in17 cm of snow in a typical April.
- Record high
- 90°32° (1990)
- Record low
- −7°−22° (2003)
- Heating degree days
- 715
- Cooling degree days
- 1
Alpena in May
Highs average 66°19° and lows 41°5°, with 2.8 in71 mm of precipitation and 0.2 in0.5 cm of snow in a typical May.
- Record high
- 94°34° (1937)
- Record low
- 20°−7° (1966)
- Heating degree days
- 377
- Cooling degree days
- 15
Alpena in June
Highs average 76°24° and lows 50°10°, with 2.7 in70 mm of precipitation in a typical June.
- Record high
- 104°40° (1934)
- Record low
- 27°−3° (1928)
- Heating degree days
- 120
- Cooling degree days
- 64
Alpena in July
Highs average 81°27° and lows 56°13°, with 3.2 in81 mm of precipitation in a typical July.
- Record high
- 106°41° (1936)
- Record low
- 34°1° (1930)
- Heating degree days
- 34
- Cooling degree days
- 133
Alpena in August
Highs average 79°26° and lows 55°13°, with 3.1 in78 mm of precipitation in a typical August.
- Record high
- 102°39° (1988)
- Record low
- 29°−2° (1934)
- Heating degree days
- 52
- Cooling degree days
- 103
Alpena in September
Highs average 71°22° and lows 47°8°, with 2.8 in72 mm of precipitation in a typical September.
- Record high
- 99°37° (1953)
- Record low
- 23°−5° (1942)
- Heating degree days
- 212
- Cooling degree days
- 32
Alpena in OctoberThis month
Highs average 58°14° and lows 37°3°, with 3 in76 mm of precipitation and 0.4 in1 cm of snow in a typical October.
- Record high
- 90°32° (2007)
- Record low
- 12°−11° (1925)
- Heating degree days
- 549
- Cooling degree days
- 3
Alpena in November
Highs average 45°7° and lows 29°−2°, with 2.1 in53 mm of precipitation and 7 in17 cm of snow in a typical November.
- Record high
- 78°26° (2022)
- Record low
- −6°−21° (1933)
- Heating degree days
- 852
- Cooling degree days
- 0
Alpena in December
Highs average 34°1° and lows 20°−7°, with 1.9 in47 mm of precipitation and 17 in43 cm of snow in a typical December.
- Record high
- 65°18° (1982)
- Record low
- −27°−33° (1933)
- Heating degree days
- 1190
- Cooling degree days
- 0