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Detroit/Pontiac, MI Local Forecast Office

4NM SW Bay Port MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:Variable winds less than 5 kt becoming SSE 5 to 9 kt in the evening. Partly cloudy. Waves 1 ft or less.

      Low: 61 °F

      ⇑SSE 9kt
      < 1ft

    • Saturday

      Saturday:SW wind around 13 kt, with gusts as high as 20 kt. Increasing clouds. Waves 1 ft or less.

      High: 80 °F

      SW 13kt
      < 1ft

    • Saturday Night

      Saturday Night:SW wind 6 to 8 kt. A chance of showers between 3am and 5am.   Waves 1 ft or less.

      Low: 67 °F

      SW 8kt
      < 1ft

    • Sunday

      Sunday:S wind 7 to 10 kt. Showers likely, mainly after 2pm.   Waves 1 ft or less.

      High: 80 °F

      S 10kt
      < 1ft

    • Sunday Night

      Sunday Night:SE wind around 6 kt. Showers likely, mainly before 8pm.   Waves 1 ft or less.

      Low: 68 °F

      SE 6kt
      < 1ft

    • Monday

      Monday:SE wind 6 to 8 kt becoming SSW in the afternoon. A chance of showers before 2pm.   Waves 1 ft or less.

      High: 83 °F

      S 8kt
      < 1ft

    • Monday Night

      Monday Night:S wind around 8 kt. A chance of showers after 2am.   Waves 1 ft or less.

      Low: 71 °F

      S 8kt
      < 1ft

    • Tuesday

      Tuesday:WSW wind 7 to 10 kt. A chance of showers.   Waves 1 ft or less.

      High: 86 °F

      WSW 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:S wind around 6 kt becoming WSW after midnight. A chance of showers.   Waves 1 ft or less.

      Low: 70 °F

      S 6kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:24 pm EDT Aug 28, 2026
Forecast Valid: 7pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026

View Nearby Observations

Detailed Forecast

Tonight
Variable winds less than 5 kt becoming SSE 5 to 9 kt in the evening. Partly cloudy. Waves 1 ft or less.
Saturday
SW wind around 13 kt, with gusts as high as 20 kt. Increasing clouds. Waves 1 ft or less.
Saturday Night
SW wind 6 to 8 kt. A chance of showers between 3am and 5am. Waves 1 ft or less.
Sunday
S wind 7 to 10 kt. Showers likely, mainly after 2pm. Waves 1 ft or less.
Sunday Night
SE wind around 6 kt. Showers likely, mainly before 8pm. Waves 1 ft or less.
Monday
SE wind 6 to 8 kt becoming SSW in the afternoon. A chance of showers before 2pm. Waves 1 ft or less.
Monday Night
S wind around 8 kt. A chance of showers after 2am. Waves 1 ft or less.
Tuesday
WSW wind 7 to 10 kt. A chance of showers. Waves 1 ft or less.
Tuesday Night
S wind around 6 kt becoming WSW after midnight. A chance of showers. 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: 43.79°N 83.43°W
Last Update: 4:24 pm EDT Aug 28, 2026
Forecast Valid: 7pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
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