Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NW wind around 9 kt. Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm.   Waves 1 to 2 ft.

      High: 49 °F

      NW 9kt
      1-2ft

    • Tonight

      Tonight:N wind around 9 kt. A chance of showers and thunderstorms before 8pm.   Waves around 1 ft.

      Low: 41 °F

      N 9kt
      1ft

    • Friday

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

      High: 47 °F

      N 6kt⇓
      < 1ft

    • Friday Night

      Friday Night:SSE wind 10 to 19 kt. A chance of showers after 2am.   Waves 1 ft or less building to 3 ft.

      Low: 42 °F

      SSE 19kt
      Waves Building3ft

    • Saturday

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

      High: 50 °F

      S 22kt
      4-5ft

    • Saturday Night

      Saturday Night:WNW wind 17 to 19 kt. Showers likely, mainly before 8pm.   Waves 3 to 4 ft.

      Low: 35 °F

      WNW 19kt
      3-4ft

    • Sunday

      Sunday:WNW wind around 19 kt. Mostly sunny. Waves around 5 ft.

      High: 38 °F

      WNW 19kt
      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 10 to 20 kt. Mostly sunny. Waves 7 ft subsiding to 4 ft.

      High: 38 °F

      NW 20kt
      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: 2:24 pm EDT Apr 16, 2026
Forecast Valid: 2pm EDT Apr 16, 2026-6pm EDT Apr 22, 2026

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Detailed Forecast

This Afternoon
NW wind around 9 kt. Showers and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Waves 1 to 2 ft.
Tonight
N wind around 9 kt. A chance of showers and thunderstorms before 8pm. Waves around 1 ft.
Friday
N wind around 6 kt becoming variable and less than 5 kt. Mostly cloudy. Waves 1 ft or less.
Friday Night
SSE wind 10 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 after 8am. Waves 4 to 5 ft.
Saturday Night
WNW wind 17 to 19 kt. Showers likely, mainly before 8pm. Waves 3 to 4 ft.
Sunday
WNW wind around 19 kt. Mostly 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 10 to 20 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: 2:24 pm EDT Apr 16, 2026
Forecast Valid: 2pm EDT Apr 16, 2026-6pm EDT Apr 22, 2026
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