National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Alpena, Alpena County Regional Airport (KAPN)

Lat: 45.07°NLon: 83.56°WElev: 689ft.

Overcast

51°F

11°C

Humidity 89%
Wind Speed NW 12 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 13 Oct 10:54 pm EDT
Extended Forecast for

3 Miles NW Thunder Bay National Marine Sanctuary MI

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Northwest wind around 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 56. Northwest wind 10 to 15 mph.

    High: 56 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. Northwest wind 5 to 10 mph becoming northeast after midnight.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 55. Southeast wind 5 to 10 mph.

    High: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly after 8pm. Patchy fog after 11pm. Low around 42. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.

    Low: 42 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Showers, mainly before 2pm. High near 53. Breezy. Chance of precipitation is 90%.

    High: 53 °F

    Showers and
    Breezy

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 37. Windy.

    Low: 37 °F

    Chance
    Showers and
    Windy then
    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. Northwest wind around 5 mph.
Wednesday
Mostly cloudy, with a high near 56. Northwest wind 10 to 15 mph.
Wednesday Night
Mostly cloudy, with a low around 44. Northwest wind 5 to 10 mph becoming northeast after midnight.
Thursday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 55. Southeast wind 5 to 10 mph.
Thursday Night
Showers, mainly after 8pm. Patchy fog after 11pm. Low around 42. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.
Friday
Showers, mainly before 2pm. High near 53. Breezy. Chance of precipitation is 90%.
Friday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 37. Windy.
Saturday
Sunny, with a high near 52.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 49.
Monday
Partly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Thunder Bay National Marine Sanctuary MI
 45.08°N 83.34°W (Elev. 610 ft)
Last Update:
11:39 pm EDT Oct 13, 2026
Forecast Valid:
11pm EDT Oct 13, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation