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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind around 14 kt. Mostly clear. Waves 1 to 2 ft.

      Low: 66 °F

      S 14kt
      1-2ft

    • Monday

      Monday:SSW wind around 14 kt. A slight chance of showers after 2pm.   Waves around 2 ft.

      High: 72 °F

      SSW 14kt
      2ft

    • Monday Night

      Monday Night:SSW wind 10 to 15 kt becoming WNW after midnight. Showers and thunderstorms likely, then showers after 11pm.   Waves around 2 ft.

      Low: 60 °F

      SSW 15kt
      2ft

    • Tuesday

      Tuesday:N wind around 15 kt. Showers, mainly before 2pm.   Waves 2 to 3 ft.

      High: 62 °F

      N 15kt
      2-3ft

    • Tuesday Night

      Tuesday Night:N wind 16 to 21 kt. A chance of showers before 8pm.   Waves 3 ft building to 6 ft.

      Low: 54 °F

      N 21kt
      Waves Building6ft

    • Wednesday

      Wednesday:N wind 16 to 18 kt. Sunny. Waves 4 to 6 ft. occasionally to 8ft.

      High: 56 °F

      N 18kt
      4-6ft

    • Wednesday Night

      Wednesday Night:N wind 10 to 16 kt becoming ENE after midnight. Mostly clear. Waves 1 to 3 ft.

      Low: 51 °F

      N 16kt
      1-3ft

    • Thursday

      Thursday:SE wind 5 to 10 kt. Sunny. Waves 1 ft or less.

      High: 56 °F

      SE 10kt
      < 1ft

    • Thursday Night

      Thursday Night:S wind 8 to 11 kt. Mostly clear. Waves 1 ft or less.

      Low: 55 °F

      S 11kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:13 pm EDT Oct 5, 2025
Forecast Valid: 8pm EDT Oct 5, 2025-6pm EDT Oct 12, 2025

View Nearby Observations

Detailed Forecast

Tonight
S wind around 14 kt. Mostly clear. Waves 1 to 2 ft.
Monday
SSW wind around 14 kt. A slight chance of showers after 2pm. Waves around 2 ft.
Monday Night
SSW wind 10 to 15 kt becoming WNW after midnight. Showers and thunderstorms likely, then showers after 11pm. Waves around 2 ft.
Tuesday
N wind around 15 kt. Showers, mainly before 2pm. Waves 2 to 3 ft.
Tuesday Night
N wind 16 to 21 kt. A chance of showers before 8pm. Waves 3 ft building to 6 ft.
Wednesday
N wind 16 to 18 kt. Sunny. Waves 4 to 6 ft. occasionally to 8ft.
Wednesday Night
N wind 10 to 16 kt becoming ENE after midnight. Mostly clear. Waves 1 to 3 ft.
Thursday
SE wind 5 to 10 kt. Sunny. Waves 1 ft or less.
Thursday Night
S wind 8 to 11 kt. Mostly clear. Waves 1 ft or less.



*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: 5:13 pm EDT Oct 5, 2025
Forecast Valid: 8pm EDT Oct 5, 2025-6pm EDT Oct 12, 2025
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