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Monthly climate in Alpena, Michigan, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Alpena features a humid continental climate (Dfb). Temperatures typically range between -5 °C (23 °F) and 20 °C (69 °F) through the year, but rarely can drop to -22 °C (-8 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 922 mm (36.3 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Alpena enjoys an average of 2763 hours of sunshine throughout the year, and daylight varies from 8 hours 48 minutes to 15 hours 32 minutes per day.

Monthly average temperatures in Alpena, Michigan, United States §

The warmest months in Alpena are July, August and September, with daily mean temperatures ranging from 16 to 20 °C (61 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -2 °C (23 - 29 °F) throughout the day. On average each year, Alpena experiences 29 days above 25 °C (77.0 °F) and 130 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Alpena, Michigan, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 10°C
(51°F)		 13°C
(55°F)		 17°C
(63°F)		 22°C
(71°F)		 27°C
(81°F)		 30°C
(86°F)		 32°C
(90°F)		 31°C
(87°F)		 31°C
(88°F)		 25°C
(77°F)		 21°C
(70°F)		 15°C
(59°F)
Mean maximum 6°C
(43°F)		 9°C
(48°F)		 12°C
(54°F)		 17°C
(62°F)		 25°C
(77°F)		 28°C
(82°F)		 30°C
(85°F)		 29°C
(85°F)		 27°C
(81°F)		 23°C
(74°F)		 14°C
(58°F)		 10°C
(50°F)
Average high -2°C
(28°F)		 -1°C
(30°F)		 3°C
(38°F)		 8°C
(47°F)		 14°C
(58°F)		 20°C
(69°F)		 24°C
(76°F)		 24°C
(76°F)		 20°C
(69°F)		 14°C
(57°F)		 5°C
(42°F)		 1°C
(34°F)
Daily mean -5°C
(23°F)		 -5°C
(23°F)		 -1°C
(31°F)		 4°C
(39°F)		 10°C
(51°F)		 16°C
(61°F)		 20°C
(69°F)		 20°C
(68°F)		 16°C
(61°F)		 10°C
(50°F)		 3°C
(37°F)		 -2°C
(29°F)
Average low -8°C
(18°F)		 -9°C
(17°F)		 -5°C
(24°F)		 0°C
(33°F)		 6°C
(43°F)		 12°C
(54°F)		 16°C
(61°F)		 16°C
(61°F)		 12°C
(55°F)		 7°C
(45°F)		 -0°C
(32°F)		 -4°C
(25°F)
Mean minimum -16°C
(3°F)		 -18°C
(1°F)		 -14°C
(7°F)		 -6°C
(22°F)		 -0°C
(32°F)		 8°C
(46°F)		 12°C
(54°F)		 11°C
(53°F)		 6°C
(44°F)		 0°C
(32°F)		 -8°C
(17°F)		 -12°C
(10°F)
Minimum -22°C
(-8°F)		 -21°C
(-6°F)		 -19°C
(-2°F)		 -12°C
(11°F)		 -2°C
(28°F)		 4°C
(40°F)		 11°C
(52°F)		 8°C
(48°F)		 2°C
(37°F)		 -2°C
(29°F)		 -12°C
(11°F)		 -19°C
(-3°F)

Compare climate in Alpena with other places

Compare temperature, precipitation, sunshine, UV index in Alpena, Michigan, United States with other places around the world.

Monthly average precipitation in Alpena, Michigan, United States §

Alpena usually has the most precipitation in April, June and October, with an average of 12 rainy days and 98 mm (3.9 inches) of precipitation per month. The driest months in Alpena are January, February and March. On average, 56 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Alpena, Michigan, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 52 (2.0) 56 (2.2) 61 (2.4) 94 (3.7) 84 (3.3) 91 (3.6) 86 (3.4) 84 (3.3) 77 (3.0) 108 (4.3) 67 (2.6) 62 (2.4)
Average precipitation days (≥ 1 mm) 10 11 9 12 11 11 11 12 11 15 11 13

Monthly sunshine hours in Alpena, Michigan, United States §

The sunniest months in Alpena are June, July and August, when the sun shines an average of 11 hours 11 minutes a day. Least sunny months in Alpena: January, November and December receive an average of 3 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Alpena, Michigan, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 87 139 235 243 310 332 358 338 278 201 136 100
Mean daily daylight hours 9h 11m 10h 25m 11h 57m 13h 32m 14h 52m 15h 32m 15h 10m 13h 58m 12h 27m 10h 54m 9h 31m 8h 48m

Solar UV radiation in Alpena, Michigan, United States §

Alpena experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Alpena UV Index data.

Average daily maximum UV levels by month for Alpena, Michigan, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 4 5 7 8 10 9 8 7 5 3 2

Detailed Monthly Weather Insights for Alpena, Michigan, United States

Discover in-depth weather details for every month in Alpena. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Alpena's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.