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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Wednesday

      Wednesday:NE wind 5 to 9 kt becoming variable and less than 5 kt. Partly sunny. Waves 1 ft or less.

      High: 41 °F

      NE 9kt⇓
      < 1ft

    • Wednesday Night

      Wednesday Night:SE wind 5 to 8 kt becoming S after midnight. Cloudy, then gradually becoming partly cloudy. Waves 1 ft or less.

      Low: 41 °F

      S 8kt
      < 1ft

    • Thursday

      Thursday:S wind 9 to 13 kt. Partly sunny. Waves 1 to 2 ft.

      High: 47 °F

      S 13kt
      1-2ft

    • Thursday Night

      Thursday Night:S wind around 17 kt becoming WSW after midnight. Rain likely, mainly before 1am.   Waves 2 to 3 ft.

      Low: 44 °F

      SSW 17kt
      2-3ft

    • Friday

      Friday:WNW wind 13 to 16 kt. Mostly cloudy, then gradually becoming sunny. Waves 2 to 3 ft.

      High: 46 °F

      WNW 16kt
      2-3ft

    • Friday Night

      Friday Night:NW wind 11 to 13 kt. Partly cloudy. Waves around 2 ft.

      Low: 41 °F

      NW 13kt
      2ft

    • Saturday

      Saturday:NNW wind 8 to 10 kt becoming SSW in the afternoon. Mostly sunny. Waves around 1 ft.

      High: 44 °F

      NNW 10kt
      1ft

    • Saturday Night

      Saturday Night:SSW wind 10 to 13 kt. Mostly cloudy. Waves 1 to 2 ft.

      Low: 42 °F

      SSW 13kt
      1-2ft

    • Sunday

      Sunday:WSW wind 12 to 15 kt. Mostly sunny. Waves around 2 ft.

      High: 47 °F

      WSW 15kt
      2ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:49 pm EST Nov 18, 2025
Forecast Valid: 2am EST Nov 19, 2025-6pm EST Nov 25, 2025

View Nearby Observations

Detailed Forecast

Wednesday
NE wind 5 to 9 kt becoming variable and less than 5 kt. Partly sunny. Waves 1 ft or less.
Wednesday Night
SE wind 5 to 8 kt becoming S after midnight. Cloudy, then gradually becoming partly cloudy. Waves 1 ft or less.
Thursday
S wind 9 to 13 kt. Partly sunny. Waves 1 to 2 ft.
Thursday Night
S wind around 17 kt becoming WSW after midnight. Rain likely, mainly before 1am. Waves 2 to 3 ft.
Friday
WNW wind 13 to 16 kt. Mostly cloudy, then gradually becoming sunny. Waves 2 to 3 ft.
Friday Night
NW wind 11 to 13 kt. Partly cloudy. Waves around 2 ft.
Saturday
NNW wind 8 to 10 kt becoming SSW in the afternoon. Mostly sunny. Waves around 1 ft.
Saturday Night
SSW wind 10 to 13 kt. Mostly cloudy. Waves 1 to 2 ft.
Sunday
WSW wind 12 to 15 kt. Mostly sunny. Waves around 2 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: 9:49 pm EST Nov 18, 2025
Forecast Valid: 2am EST Nov 19, 2025-6pm EST Nov 25, 2025
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