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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:WSW wind 7 to 11 kt becoming NW in the afternoon. Partly sunny. Waves 1 to 2 ft.

      High: 37 °F

      WSW 11kt
      1-2ft

    • Tonight

      Tonight:ENE wind 5 to 11 kt becoming SSE after midnight. A slight chance of rain after 5am.   Waves 1 ft or less.

      Low: 35 °F

      SSE 11kt
      < 1ft

    • Friday

      Friday:S wind 12 to 17 kt becoming W in the afternoon. Rain likely, mainly between 8am and 2pm.   Waves around 2 ft.

      High: 42 °F

      S 17kt
      2ft

    • Friday Night

      Friday Night:N wind around 10 kt. Mostly cloudy. Waves around 1 ft.

      Low: 34 °F

      N 10kt
      1ft

    • Saturday

      Saturday:WNW wind around 11 kt becoming WSW in the afternoon. Partly sunny. Waves 1 to 2 ft.

      High: 39 °F

      WNW 11kt
      1-2ft

    • Saturday Night

      Saturday Night:SSE wind 12 to 14 kt. A chance of rain and snow between 2am and 5am, then a chance of rain after 5am.   Waves 2 to 4 ft.

      Low: 35 °F

      SSE 14kt
      2-4ft

    • Sunday

      Sunday:E wind 16 to 20 kt becoming N in the afternoon. A chance of rain before 8am, then a chance of rain and snow.   Waves 6 to 7 ft. occasionally to 9ft.

      High: 39 °F

      N 20kt
      6-7ft

    • Sunday Night

      Sunday Night:NNE wind 22 to 24 kt. Mostly cloudy. Waves around 6 ft.

      Low: 27 °F

      NNE 24kt
      6ft

    • Monday

      Monday:NNW wind 19 to 24 kt. Partly sunny. Waves 6 ft subsiding to 3 ft.

      High: 31 °F

      NNW 24kt
      6ftWaves Subsiding


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:25 am EDT Mar 19, 2026
Forecast Valid: 5am EDT Mar 19, 2026-6pm EDT Mar 25, 2026

View Nearby Observations

Detailed Forecast

Today
WSW wind 7 to 11 kt becoming NW in the afternoon. Partly sunny. Waves 1 to 2 ft.
Tonight
ENE wind 5 to 11 kt becoming SSE after midnight. A slight chance of rain after 5am. Waves 1 ft or less.
Friday
S wind 12 to 17 kt becoming W in the afternoon. Rain likely, mainly between 8am and 2pm. Waves around 2 ft.
Friday Night
N wind around 10 kt. Mostly cloudy. Waves around 1 ft.
Saturday
WNW wind around 11 kt becoming WSW in the afternoon. Partly sunny. Waves 1 to 2 ft.
Saturday Night
SSE wind 12 to 14 kt. A chance of rain and snow between 2am and 5am, then a chance of rain after 5am. Waves 2 to 4 ft.
Sunday
E wind 16 to 20 kt becoming N in the afternoon. A chance of rain before 8am, then a chance of rain and snow. Waves 6 to 7 ft. occasionally to 9ft.
Sunday Night
NNE wind 22 to 24 kt. Mostly cloudy. Waves around 6 ft.
Monday
NNW wind 19 to 24 kt. Partly sunny. Waves 6 ft subsiding to 3 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: 4:25 am EDT Mar 19, 2026
Forecast Valid: 5am EDT Mar 19, 2026-6pm EDT Mar 25, 2026
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