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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:N wind around 11 kt. Mostly cloudy. Waves around 1 ft.

      High: 38 °F

      N 11kt
      1ft

    • Tonight

      Tonight:NNW wind 10 to 12 kt. Mostly cloudy. Waves around 1 ft.

      Low: 34 °F

      NNW 12kt
      1ft

    • Saturday

      Saturday:NNW wind 5 to 9 kt becoming variable and less than 5 kt in the afternoon. Sunny. Waves around 1 ft.

      High: 38 °F

      NNW 9kt⇓
      1ft

    • Saturday Night

      Saturday Night:ENE wind 5 to 12 kt becoming SE after midnight. A chance of showers after 2am.   Waves 1 ft or less.

      Low: 35 °F

      SE 12kt
      < 1ft

    • Sunday

      Sunday:SSE wind 17 to 20 kt. Showers likely, mainly between 8am and 2pm.   Waves 3 to 4 ft.

      High: 50 °F

      SSE 20kt
      3-4ft

    • Sunday Night

      Sunday Night:SSW wind 21 to 25 kt. Showers likely after 8pm.   Waves 5 to 7 ft. occasionally to 9ft.

      Low: 48 °F

      SSW 25kt
      5-7ft

    • Monday

      Monday:WSW wind 17 to 22 kt. A chance of showers before 2pm.   Waves 4 to 6 ft. occasionally to 8ft.

      High: 53 °F

      WSW 22kt
      4-6ft

    • Monday Night

      Monday Night:W wind around 13 kt becoming SSE in the evening. A chance of showers between 8pm and 2am, then a chance of showers and thunderstorms after 2am.   Waves 1 to 2 ft.

      Low: 45 °F

      W 13kt
      1-2ft

    • Tuesday

      Tuesday:S wind 17 to 20 kt. Showers likely and possibly a thunderstorm.   Waves 3 to 4 ft.

      High: 53 °F

      S 20kt
      3-4ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:13 am EDT Apr 10, 2026
Forecast Valid: 12pm EDT Apr 10, 2026-6pm EDT Apr 16, 2026

View Nearby Observations

Detailed Forecast

This Afternoon
N wind around 11 kt. Mostly cloudy. Waves around 1 ft.
Tonight
NNW wind 10 to 12 kt. Mostly cloudy. Waves around 1 ft.
Saturday
NNW wind 5 to 9 kt becoming variable and less than 5 kt in the afternoon. Sunny. Waves around 1 ft.
Saturday Night
ENE wind 5 to 12 kt becoming SE after midnight. A chance of showers after 2am. Waves 1 ft or less.
Sunday
SSE wind 17 to 20 kt. Showers likely, mainly between 8am and 2pm. Waves 3 to 4 ft.
Sunday Night
SSW wind 21 to 25 kt. Showers likely after 8pm. Waves 5 to 7 ft. occasionally to 9ft.
Monday
WSW wind 17 to 22 kt. A chance of showers before 2pm. Waves 4 to 6 ft. occasionally to 8ft.
Monday Night
W wind around 13 kt becoming SSE in the evening. A chance of showers between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Waves 1 to 2 ft.
Tuesday
S wind 17 to 20 kt. Showers likely and possibly a thunderstorm. Waves 3 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: 11:13 am EDT Apr 10, 2026
Forecast Valid: 12pm EDT Apr 10, 2026-6pm EDT Apr 16, 2026
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