Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NNW wind 21 to 31 kt. A chance of snow showers.   Waves 5 ft building to 10 ft.

      Low: 24 °F

      NNW 31kt
      Waves Building10ft

    • Tuesday

      Tuesday:N wind 18 to 23 kt decreasing to 11 to 16 kt in the afternoon. Mostly cloudy, then gradually becoming sunny. Waves 8 ft subsiding to 3 ft.

      High: 25 °F

      N 23kt⇓
      8ftWaves Subsiding

    • Tuesday Night

      Tuesday Night:E wind 6 to 13 kt becoming S after midnight. Mostly clear. Waves 1 to 2 ft.

      Low: 27 °FRising Temperatures

      S 13kt
      1-2ft

    • Wednesday

      Wednesday:SSE wind 15 to 18 kt. Mostly sunny. Waves 2 to 3 ft.

      High: 42 °F

      SSE 18kt
      2-3ft

    • Wednesday Night

      Wednesday Night:S wind 20 to 25 kt. Mostly cloudy. Waves 4 to 6 ft. occasionally to 8ft.

      Low: 40 °FRising Temperatures

      S 25kt
      4-6ft

    • Thursday

      Thursday:S wind 19 to 24 kt. A chance of rain.   Waves around 6 ft.

      High: 49 °F

      S 24kt
      6ft

    • Thursday Night

      Thursday Night:SW wind 10 to 14 kt becoming S after midnight. A chance of rain.   Waves 2 to 4 ft.

      Low: 39 °FRising Temperatures

      SW 14kt
      2-4ft

    • Friday

      Friday:SE wind 10 to 12 kt becoming WNW in the afternoon. Rain likely.   Waves 1 to 2 ft.

      High: 42 °F

      SE 12kt
      1-2ft

    • Friday Night

      Friday Night:N wind around 12 kt. A chance of rain.   Waves around 1 ft.

      Low: 36 °FRising Temperatures

      N 12kt
      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 Apr 6, 2026
Forecast Valid: 10pm EDT Apr 6, 2026-6pm EDT Apr 13, 2026

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Detailed Forecast

Tonight
NNW wind 21 to 31 kt. A chance of snow showers. Waves 5 ft building to 10 ft.
Tuesday
N wind 18 to 23 kt decreasing to 11 to 16 kt in the afternoon. Mostly cloudy, then gradually becoming sunny. Waves 8 ft subsiding to 3 ft.
Tuesday Night
E wind 6 to 13 kt becoming S after midnight. Mostly clear. Waves 1 to 2 ft.
Wednesday
SSE wind 15 to 18 kt. Mostly sunny. Waves 2 to 3 ft.
Wednesday Night
S wind 20 to 25 kt. Mostly cloudy. Waves 4 to 6 ft. occasionally to 8ft.
Thursday
S wind 19 to 24 kt. A chance of rain. Waves around 6 ft.
Thursday Night
SW wind 10 to 14 kt becoming S after midnight. A chance of rain. Waves 2 to 4 ft.
Friday
SE wind 10 to 12 kt becoming WNW in the afternoon. Rain likely. Waves 1 to 2 ft.
Friday Night
N wind around 12 kt. A chance of rain. Waves around 1 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: 4:24 pm EDT Apr 6, 2026
Forecast Valid: 10pm EDT Apr 6, 2026-6pm EDT Apr 13, 2026
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