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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]
    • Monday

      Monday:W wind around 8 kt. Showers and thunderstorms, mainly before 8am.   Waves 1 ft or less.

      High: 86 °F

      W 8kt
      < 1ft

    • Monday Night

      Monday Night:W wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am.   Waves 1 ft or less.

      Low: 69 °F

      W 7kt⇓
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. Showers likely, with thunderstorms also possible after 5pm.   Waves 1 ft or less.

      High: 83 °F

      ⇑SSE 6kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am.   Waves 1 ft or less.

      Low: 68 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming WSW 5 to 7 kt in the morning. A chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 84 °F

      ⇑WSW 7kt
      < 1ft

    • Wednesday Night

      Wednesday Night:WNW wind around 6 kt becoming NNW after midnight. A chance of showers and thunderstorms before 8pm.   Waves 1 ft or less.

      Low: 68 °F

      WNW 6kt
      < 1ft

    • Thursday

      Thursday:N wind 5 to 7 kt becoming WNW in the afternoon. Mostly sunny. Waves 1 ft or less.

      High: 83 °F

      NW 7kt
      < 1ft

    • Thursday Night

      Thursday Night:SW wind around 6 kt becoming NE after midnight. Mostly cloudy. Waves 1 ft or less.

      Low: 64 °F

      SW 6kt
      < 1ft

    • Friday

      Friday:NNE wind around 7 kt. Mostly sunny. Waves 1 ft or less.

      High: 79 °F

      NNE 7kt
      < 1ft


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 am EDT Aug 10, 2026
Forecast Valid: 3am EDT Aug 10, 2026-6pm EDT Aug 16, 2026

View Nearby Observations

Detailed Forecast

Monday
W wind around 8 kt. Showers and thunderstorms, mainly before 8am. Waves 1 ft or less.
Monday Night
W wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Waves 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. Showers likely, with thunderstorms also possible after 5pm. Waves 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Waves 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming WSW 5 to 7 kt in the morning. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.
Wednesday Night
WNW wind around 6 kt becoming NNW after midnight. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.
Thursday
N wind 5 to 7 kt becoming WNW in the afternoon. Mostly sunny. Waves 1 ft or less.
Thursday Night
SW wind around 6 kt becoming NE after midnight. Mostly cloudy. Waves 1 ft or less.
Friday
NNE wind around 7 kt. Mostly 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: 2:24 am EDT Aug 10, 2026
Forecast Valid: 3am EDT Aug 10, 2026-6pm EDT Aug 16, 2026
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