Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:N wind 14 to 18 kt, with gusts as high as 26 kt. A chance of showers, mainly before 10pm.   Waves 1 ft building to 4 ft.

      Low: 33 °F

      N 18kt
      Waves Building4ft

    • Wednesday

      Wednesday:N wind around 17 kt. Mostly cloudy. Waves 3 to 4 ft.

      High: 33 °F

      N 17kt
      3-4ft

    • Wednesday Night

      Wednesday Night:NNE wind 13 to 16 kt becoming E after midnight. A chance of showers after 2am.   Waves 2 to 4 ft.

      Low: 33 °FRising Temperatures

      NNE 16kt
      2-4ft

    • Thursday

      Thursday:ESE wind 14 to 17 kt. Showers likely, mainly between 8am and 2pm.   Waves 2 to 3 ft.

      High: 49 °F

      ESE 17kt
      2-3ft

    • Thursday Night

      Thursday Night:S wind 22 to 25 kt. Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am.   Waves 5 to 7 ft. occasionally to 9ft.

      Low: 45 °FRising Temperatures

      S 25kt
      5-7ft

    • Friday

      Friday:SW wind 14 to 20 kt becoming W in the afternoon. Showers likely before 8am.   Waves 5 ft subsiding to 2 ft.

      High: 50 °F

      SW 20kt
      5ftWaves Subsiding

    • Friday Night

      Friday Night:N wind around 15 kt. A chance of rain after 2am.   Waves around 2 ft.

      Low: 39 °FRising Temperatures

      N 15kt
      2ft

    • Saturday

      Saturday:SE wind 17 to 19 kt becoming S in the afternoon. A chance of rain before 8am, then rain likely and possibly a thunderstorm between 8am and 2pm, then rain after 2pm.   Waves 3 to 4 ft.

      High: 50 °F

      SSE 19kt
      3-4ft

    • Saturday Night

      Saturday Night:WSW wind 18 to 22 kt. Rain.   Waves 4 to 5 ft.

      Low: 36 °FRising Temperatures

      WSW 22kt
      4-5ft


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 Mar 31, 2026
Forecast Valid: 9pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026

View Nearby Observations

Detailed Forecast

Tonight
N wind 14 to 18 kt, with gusts as high as 26 kt. A chance of showers, mainly before 10pm. Waves 1 ft building to 4 ft.
Wednesday
N wind around 17 kt. Mostly cloudy. Waves 3 to 4 ft.
Wednesday Night
NNE wind 13 to 16 kt becoming E after midnight. A chance of showers after 2am. Waves 2 to 4 ft.
Thursday
ESE wind 14 to 17 kt. Showers likely, mainly between 8am and 2pm. Waves 2 to 3 ft.
Thursday Night
S wind 22 to 25 kt. Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am. Waves 5 to 7 ft. occasionally to 9ft.
Friday
SW wind 14 to 20 kt becoming W in the afternoon. Showers likely before 8am. Waves 5 ft subsiding to 2 ft.
Friday Night
N wind around 15 kt. A chance of rain after 2am. Waves around 2 ft.
Saturday
SE wind 17 to 19 kt becoming S in the afternoon. A chance of rain before 8am, then rain likely and possibly a thunderstorm between 8am and 2pm, then rain after 2pm. Waves 3 to 4 ft.
Saturday Night
WSW wind 18 to 22 kt. Rain. Waves 4 to 5 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 Mar 31, 2026
Forecast Valid: 9pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026
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