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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSW wind 13 to 18 kt. Cloudy. Waves 2 to 4 ft.

      Low: 47 °F

      SSW 18kt
      2-4ft

    • Tuesday

      Tuesday:SE wind 9 to 13 kt. Rain likely, mainly after 1pm.   Waves 1 to 2 ft.

      High: 49 °F

      SE 13kt
      1-2ft

    • Tuesday Night

      Tuesday Night:SSE wind 9 to 14 kt becoming SSW after midnight. Rain likely.   Waves 1 to 2 ft.

      Low: 48 °F

      SSW 14kt
      1-2ft

    • Wednesday

      Wednesday:SW wind 18 to 23 kt increasing to 28 to 33 kt in the afternoon. Rain.   Waves 3 ft building to 9 ft.

      High: 49 °F

      ⇑SW 33kt
      Waves Building9ft

    • Wednesday Night

      Wednesday Night:WSW wind 36 to 38 kt, with gusts as high as 44 kt. Snow likely.   Waves 12 to 13 ft. occasionally to 17ft.

      Low: 36 °F

      WSW 38kt
      12-13ft

    • Thanksgiving Day

      Thanksgiving Day:W wind 32 to 36 kt, with gusts as high as 42 kt. Snow.   Waves 11 to 12 ft. occasionally to 16ft.

      High: 37 °F

      W 36kt
      11-12ft

    • Thursday Night

      Thursday Night:WNW wind 36 to 38 kt. Snow likely.   Waves 14 to 15 ft. occasionally to 20ft.

      Low: 34 °F

      WNW 38kt
      14-15ft

    • Friday

      Friday:WNW wind 25 to 33 kt. A chance of snow.   Waves 13 ft subsiding to 8 ft.

      High: 35 °F

      WNW 33kt
      13ftWaves Subsiding

    • Friday Night

      Friday Night:WNW wind 16 to 25 kt. A chance of snow.   Waves 7 ft subsiding to 4 ft.

      Low: 32 °F

      WNW 25kt
      7ftWaves Subsiding


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 pm EST Nov 24, 2025
Forecast Valid: 7pm EST Nov 24, 2025-6pm EST Dec 1, 2025

View Nearby Observations

Detailed Forecast

Tonight
SSW wind 13 to 18 kt. Cloudy. Waves 2 to 4 ft.
Tuesday
SE wind 9 to 13 kt. Rain likely, mainly after 1pm. Waves 1 to 2 ft.
Tuesday Night
SSE wind 9 to 14 kt becoming SSW after midnight. Rain likely. Waves 1 to 2 ft.
Wednesday
SW wind 18 to 23 kt increasing to 28 to 33 kt in the afternoon. Rain. Waves 3 ft building to 9 ft.
Wednesday Night
WSW wind 36 to 38 kt, with gusts as high as 44 kt. Snow likely. Waves 12 to 13 ft. occasionally to 17ft.
Thanksgiving Day
W wind 32 to 36 kt, with gusts as high as 42 kt. Snow. Waves 11 to 12 ft. occasionally to 16ft.
Thursday Night
WNW wind 36 to 38 kt. Snow likely. Waves 14 to 15 ft. occasionally to 20ft.
Friday
WNW wind 25 to 33 kt. A chance of snow. Waves 13 ft subsiding to 8 ft.
Friday Night
WNW wind 16 to 25 kt. A chance of snow. Waves 7 ft subsiding to 4 ft.

*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: 43.53°N 82.15°W
Last Update: 4:13 pm EST Nov 24, 2025
Forecast Valid: 7pm EST Nov 24, 2025-6pm EST Dec 1, 2025
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