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Detroit/Pontiac, MI Local Forecast Office

6NM NNW Bay Port MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:S wind 20 to 24 kt becoming SW in the afternoon. Winds could gust as high as 30 kt. Snow, mainly before 1pm.   Waves around 2 ft.

      High: 30 °F

      S 24kt
      2ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:WSW wind 12 to 15 kt becoming SSE after midnight. Snow. The snow could be heavy at times.   Waves 1 ft or less.

      Low: 29 °F

      WSW 15kt
      < 1ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday

      Wednesday:SSW wind 15 to 20 kt becoming N 22 to 27 kt in the morning. Winds could gust as high as 34 kt. Snow, mainly before 1pm.   Waves 1 ft building to 4 ft.

      High: 33 °FFalling Temperatures

      ⇑N 27kt
      Waves Building4ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:NNW wind 19 to 25 kt becoming W after midnight. Mostly cloudy. Waves 2 to 3 ft.

      Low: 21 °F

      NNW 25kt
      2-3ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:W wind 15 to 18 kt. Partly sunny. Waves 1 ft or less.

      High: 27 °FFalling Temperatures

      W 18kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 12 to 15 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 20 °F

      W 15kt
      < 1ft

    • Friday

      Friday:SW wind 11 to 13 kt, with gusts as high as 19 kt. A chance of snow after 1pm.   Waves 1 ft or less.

      High: 26 °FFalling Temperatures

      SW 13kt
      < 1ft

    • Friday Night

      Friday Night:SW wind 17 to 25 kt. A chance of snow.   Waves around 1 ft.

      Low: 17 °F

      SW 25kt
      1ft

    • Saturday

      Saturday:W wind 20 to 24 kt. Mostly cloudy. Waves around 1 ft.

      High: 20 °FFalling Temperatures

      W 24kt
      1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:13 am EST Dec 9, 2025
Forecast Valid: 5am EST Dec 9, 2025-6pm EST Dec 15, 2025

View Nearby Observations

Detailed Forecast

Today
S wind 20 to 24 kt becoming SW in the afternoon. Winds could gust as high as 30 kt. Snow, mainly before 1pm. Waves around 2 ft.
Tonight
WSW wind 12 to 15 kt becoming SSE after midnight. Snow. The snow could be heavy at times. Waves 1 ft or less.
Wednesday
SSW wind 15 to 20 kt becoming N 22 to 27 kt in the morning. Winds could gust as high as 34 kt. Snow, mainly before 1pm. Waves 1 ft building to 4 ft.
Wednesday Night
NNW wind 19 to 25 kt becoming W after midnight. Mostly cloudy. Waves 2 to 3 ft.
Thursday
W wind 15 to 18 kt. Partly sunny. Waves 1 ft or less.
Thursday Night
W wind 12 to 15 kt. Mostly cloudy. Waves 1 ft or less.
Friday
SW wind 11 to 13 kt, with gusts as high as 19 kt. A chance of snow after 1pm. Waves 1 ft or less.
Friday Night
SW wind 17 to 25 kt. A chance of snow. Waves around 1 ft.
Saturday
W wind 20 to 24 kt. Mostly cloudy. Waves around 1 ft.

Wave heights are for ice free areas.

See Lake Huron Open Lake Forecast for days 3 through 5.


*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 43.92°N 83.45°W
Last Update: 4:13 am EST Dec 9, 2025
Forecast Valid: 5am EST Dec 9, 2025-6pm EST Dec 15, 2025
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