Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:S wind 11 to 13 kt becoming NW in the afternoon. Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm.   Waves around 1 ft.

      High: 49 °FFalling Temperatures

      S 13kt
      1ft

    • Thursday Night

      Thursday Night:N wind 8 to 10 kt. Showers likely, mainly before 8pm.   Waves around 1 ft.

      Low: 41 °F

      N 10kt
      1ft

    • Friday

      Friday:N wind around 6 kt becoming variable and less than 5 kt. Partly sunny. Waves 1 ft or less.

      High: 48 °F

      N 6kt⇓
      < 1ft

    • Friday Night

      Friday Night:SSE wind 9 to 19 kt. A chance of showers after 2am.   Waves 1 ft or less building to 3 ft.

      Low: 43 °F

      SSE 19kt
      Waves Building3ft

    • Saturday

      Saturday:S wind 19 to 22 kt becoming SW in the afternoon. Showers, mainly between 8am and 2pm.   Waves 4 to 5 ft.

      High: 50 °F

      S 22kt
      4-5ft

    • Saturday Night

      Saturday Night:WNW wind 16 to 19 kt. A chance of showers before 2am.   Waves 3 to 4 ft.

      Low: 34 °F

      WNW 19kt
      3-4ft

    • Sunday

      Sunday:WNW wind around 20 kt. Partly sunny. Waves around 5 ft.

      High: 38 °F

      WNW 20kt
      5ft

    • Sunday Night

      Sunday Night:NW wind 20 to 23 kt. Mostly cloudy. Waves 5 ft building to 8 ft.

      Low: 31 °F

      NW 23kt
      Waves Building8ft

    • Monday

      Monday:NW wind 13 to 22 kt. Mostly sunny. Waves 7 ft subsiding to 4 ft.

      High: 39 °F

      NW 22kt
      7ftWaves Subsiding


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:49 am EDT Apr 16, 2026
Forecast Valid: 3am EDT Apr 16, 2026-6pm EDT Apr 22, 2026

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Detailed Forecast

Thursday
S wind 11 to 13 kt becoming NW in the afternoon. Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Waves around 1 ft.
Thursday Night
N wind 8 to 10 kt. Showers likely, mainly before 8pm. Waves around 1 ft.
Friday
N wind around 6 kt becoming variable and less than 5 kt. Partly sunny. Waves 1 ft or less.
Friday Night
SSE wind 9 to 19 kt. A chance of showers after 2am. Waves 1 ft or less building to 3 ft.
Saturday
S wind 19 to 22 kt becoming SW in the afternoon. Showers, mainly between 8am and 2pm. Waves 4 to 5 ft.
Saturday Night
WNW wind 16 to 19 kt. A chance of showers before 2am. Waves 3 to 4 ft.
Sunday
WNW wind around 20 kt. Partly sunny. Waves around 5 ft.
Sunday Night
NW wind 20 to 23 kt. Mostly cloudy. Waves 5 ft building to 8 ft.
Monday
NW wind 13 to 22 kt. Mostly sunny. Waves 7 ft subsiding to 4 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: 2:49 am EDT Apr 16, 2026
Forecast Valid: 3am EDT Apr 16, 2026-6pm EDT Apr 22, 2026
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