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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:SW wind 5 to 11 kt, with gusts as high as 18 kt. A slight chance of showers and thunderstorms after 5pm.   Waves 1 ft or less.

      High: 93 °F

      SW 11kt
      < 1ft

    • Tonight

      Tonight:SW wind 7 to 10 kt becoming WNW after midnight. Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am.   Waves 1 ft or less.

      Low: 75 °F

      SW 10kt
      < 1ft

    • Thursday

      Thursday:W wind 5 to 7 kt becoming NNW in the afternoon. A chance of showers, with thunderstorms also possible after 5pm.   Waves 1 ft or less.

      High: 88 °F

      NNW 7kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely after 8pm.   Waves 1 ft or less.

      Low: 71 °F

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds 5 kt or less. Showers likely, mainly before 8am.   Waves 1 ft or less.

      High: 83 °F

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. A chance of showers after 2am.   Waves 1 ft or less.

      Low: 67 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:ENE wind around 7 kt. A chance of showers before 8am.   Waves 1 ft or less.

      High: 80 °F

      ENE 7kt
      < 1ft

    • Saturday Night

      Saturday Night:ENE wind around 6 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.

      Low: 63 °F

      ENE 6kt⇓
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming E 5 to 8 kt in the morning. Sunny. Waves 1 ft or less.

      High: 78 °F

      ⇑E 8kt
      < 1ft


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 am EDT Sep 2, 2026
Forecast Valid: 5am EDT Sep 2, 2026-6pm EDT Sep 8, 2026

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Detailed Forecast

Today
SW wind 5 to 11 kt, with gusts as high as 18 kt. A slight chance of showers and thunderstorms after 5pm. Waves 1 ft or less.
Tonight
SW wind 7 to 10 kt becoming WNW after midnight. Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Waves 1 ft or less.
Thursday
W wind 5 to 7 kt becoming NNW in the afternoon. A chance of showers, with thunderstorms also possible after 5pm. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely after 8pm. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. Showers likely, mainly before 8am. Waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. A chance of showers after 2am. Waves 1 ft or less.
Saturday
ENE wind around 7 kt. A chance of showers before 8am. Waves 1 ft or less.
Saturday Night
ENE wind around 6 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.
Sunday
Variable winds less than 5 kt becoming E 5 to 8 kt in the morning. Sunny. Waves 1 ft or less.



*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: 42.19°N 83.15°W
Last Update: 4:24 am EDT Sep 2, 2026
Forecast Valid: 5am EDT Sep 2, 2026-6pm EDT Sep 8, 2026
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