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Detroit/Pontiac, MI Local Forecast Office

18NM ENE Port Sanilac MI

Marine Point Forecast

[NOTICE]

    • Wednesday

      Wednesday:S wind 7 to 9 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

      High: 78 °F

      S 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 8 to 10 kt. A chance of showers and thunderstorms. Waves 1 ft or less.

      Low: 76 °F

      S 10kt
      < 1ft

    • Thursday

      Thursday:SW wind 11 to 14 kt becoming NNW in the afternoon. Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 to 2 ft.

      High: 75 °FFalling Temperatures

      NNW 14kt
      1-2ft

    • Thursday Night

      Thursday Night:NNE wind 15 to 17 kt. A chance of showers before 8pm. Waves around 3 ft.

      Low: 71 °F

      NNE 17kt
      3ft

    • Friday

      Friday:N wind 10 to 12 kt. Sunny. Waves 1 to 2 ft.

      High: 69 °FFalling Temperatures

      N 12kt
      1-2ft

    • Friday Night

      Friday Night:N wind 7 to 10 kt becoming SE after midnight. Mostly clear. Waves around 1 ft.

      Low: 64 °F

      N 10kt
      1ft

    • Saturday

      Saturday:S wind around 8 kt. A chance of showers after 2pm. Waves 1 ft or less.

      High: 73 °FFalling Temperatures

      S 8kt
      < 1ft

    • Saturday Night

      Saturday Night:SE wind around 9 kt becoming S after midnight. A chance of showers. Waves 1 ft or less.

      Low: 66 °F

      SE 9kt
      < 1ft

    • Sunday

      Sunday:E wind around 11 kt becoming N in the afternoon. Partly sunny. Waves around 1 ft.

      High: 71 °FFalling Temperatures

      E 11kt
      1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:13 pm EDT Jul 15, 2025
Forecast Valid: 1am EDT Jul 16, 2025-6pm EDT Jul 22, 2025

View Nearby Observations

Detailed Forecast

Wednesday
S wind 7 to 9 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.
Wednesday Night
S wind 8 to 10 kt. A chance of showers and thunderstorms. Waves 1 ft or less.
Thursday
SW wind 11 to 14 kt becoming NNW in the afternoon. Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 to 2 ft.
Thursday Night
NNE wind 15 to 17 kt. A chance of showers before 8pm. Waves around 3 ft.
Friday
N wind 10 to 12 kt. Sunny. Waves 1 to 2 ft.
Friday Night
N wind 7 to 10 kt becoming SE after midnight. Mostly clear. Waves around 1 ft.
Saturday
S wind around 8 kt. A chance of showers after 2pm. Waves 1 ft or less.
Saturday Night
SE wind around 9 kt becoming S after midnight. A chance of showers. Waves 1 ft or less.
Sunday
E wind around 11 kt becoming N in the afternoon. Partly sunny. Waves around 1 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: 5:13 pm EDT Jul 15, 2025
Forecast Valid: 1am EDT Jul 16, 2025-6pm EDT Jul 22, 2025
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