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Detroit/Pontiac, MI Local Forecast Office

Bay Port MI

Marine Point Forecast

[NOTICE]
    • Columbus Day

      Columbus Day:SW wind around 10 kt. Mostly sunny. Waves 1 ft or less.

      High: 76 °F

      SW 10kt
      < 1ft

    • Tonight

      Tonight:SSW wind 5 to 7 kt becoming variable and less than 5 kt in the evening. A chance of rain and thunderstorms before 2am, then rain likely and possibly a thunderstorm between 2am and 4am, then a chance of rain and thunderstorms after 4am.   Waves 1 ft or less.

      Low: 59 °F

      SSW 7kt⇓
      < 1ft

    • Tuesday

      Tuesday:SSW wind 8 to 14 kt becoming W in the afternoon. Winds could gust as high as 22 kt. A chance of rain before 7am.   Waves 1 ft or less.

      High: 75 °F

      WSW 14kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Winds could gust as high as 18 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 51 °F

      NW 9kt⇓
      < 1ft

    • Wednesday

      Wednesday:N wind 5 to 7 kt. Partly sunny. Waves 1 ft or less.

      High: 62 °F

      N 7kt
      < 1ft

    • Wednesday Night

      Wednesday Night:NNE wind 5 to 9 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 45 °F

      NNE 9kt
      < 1ft

    • Thursday

      Thursday:E wind 5 to 8 kt. Mostly cloudy. Waves 1 ft or less.

      High: 60 °F

      E 8kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds less than 5 kt becoming SSW around 6 kt after midnight. Rain.   Waves 1 ft or less.

      Low: 47 °F

      ⇑SSW 6kt
      < 1ft

    • Friday

      Friday:WNW wind 17 to 24 kt, with gusts as high as 38 kt. Rain likely.   Waves 1 ft or less.

      High: 58 °F

      WNW 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: 2:24 pm EDT Oct 12, 2026
Forecast Valid: 3pm EDT Oct 12, 2026-6pm EDT Oct 18, 2026

View Nearby Observations

Detailed Forecast

Columbus Day
SW wind around 10 kt. Mostly sunny. Waves 1 ft or less.
Tonight
SSW wind 5 to 7 kt becoming variable and less than 5 kt in the evening. A chance of rain and thunderstorms before 2am, then rain likely and possibly a thunderstorm between 2am and 4am, then a chance of rain and thunderstorms after 4am. Waves 1 ft or less.
Tuesday
SSW wind 8 to 14 kt becoming W in the afternoon. Winds could gust as high as 22 kt. A chance of rain before 7am. Waves 1 ft or less.
Tuesday Night
NW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Winds could gust as high as 18 kt. Mostly cloudy. Waves 1 ft or less.
Wednesday
N wind 5 to 7 kt. Partly sunny. Waves 1 ft or less.
Wednesday Night
NNE wind 5 to 9 kt. Mostly cloudy. Waves 1 ft or less.
Thursday
E wind 5 to 8 kt. Mostly cloudy. Waves 1 ft or less.
Thursday Night
Variable winds less than 5 kt becoming SSW around 6 kt after midnight. Rain. Waves 1 ft or less.
Friday
WNW wind 17 to 24 kt, with gusts as high as 38 kt. Rain likely. Waves 1 ft or less.

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: 43.85°N 83.37°W
Last Update: 2:24 pm EDT Oct 12, 2026
Forecast Valid: 3pm EDT Oct 12, 2026-6pm EDT Oct 18, 2026
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