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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:S wind around 8 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 1 °FRising Temperatures

      S 8kt
      < 1ft

    • Monday

      Monday:S wind 9 to 14 kt. A chance of snow, mainly before 1pm.   Waves 1 ft or less.

      High: 22 °F

      S 14kt
      < 1ft

    • Monday Night

      Monday Night:SSW wind around 12 kt becoming W after midnight. Mostly cloudy. Waves 1 ft or less.

      Low: 15 °F

      SSW 12kt
      < 1ft

    • Tuesday

      Tuesday:WNW wind 10 to 13 kt. A chance of flurries before 1pm.   Waves 1 ft or less.

      High: 20 °F

      WNW 13kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NW wind 10 to 12 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 11 °F

      NW 12kt
      < 1ft

    • Wednesday

      Wednesday:NW wind 9 to 12 kt. Partly sunny. Waves 1 ft or less.

      High: 20 °F

      NW 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:W wind 8 to 10 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 13 °F

      W 10kt
      < 1ft

    • Thursday

      Thursday:W wind 11 to 14 kt becoming SSW in the afternoon. Partly sunny. Waves 1 ft or less.

      High: 23 °F

      WSW 14kt
      < 1ft

    • Thursday Night

      Thursday Night:SSW wind 17 to 20 kt. Snow likely.   Waves 1 ft or less.

      Low: 18 °F

      SSW 20kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 10:36 pm EST Feb 1, 2026
Forecast Valid: 12am EST Feb 2, 2026-6pm EST Feb 8, 2026

View Nearby Observations

Detailed Forecast

Overnight
S wind around 8 kt. Mostly cloudy. Waves 1 ft or less.
Monday
S wind 9 to 14 kt. A chance of snow, mainly before 1pm. Waves 1 ft or less.
Monday Night
SSW wind around 12 kt becoming W after midnight. Mostly cloudy. Waves 1 ft or less.
Tuesday
WNW wind 10 to 13 kt. A chance of flurries before 1pm. Waves 1 ft or less.
Tuesday Night
NW wind 10 to 12 kt. Mostly cloudy. Waves 1 ft or less.
Wednesday
NW wind 9 to 12 kt. Partly sunny. Waves 1 ft or less.
Wednesday Night
W wind 8 to 10 kt. Mostly cloudy. Waves 1 ft or less.
Thursday
W wind 11 to 14 kt becoming SSW in the afternoon. Partly sunny. Waves 1 ft or less.
Thursday Night
SSW wind 17 to 20 kt. Snow likely. Waves 1 ft or less.

Waves omitted due to ice coverage.


*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: 10:36 pm EST Feb 1, 2026
Forecast Valid: 12am EST Feb 2, 2026-6pm EST Feb 8, 2026
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