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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Showers and thunderstorms, mainly before 1pm.  Areas of fog before 2pm.  Waves 1 ft or less.

      High: 82 °F

      ⇑SSW 6kt
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am.   Waves 1 ft or less.

      Low: 68 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:NE wind 6 to 9 kt. A chance of showers before 7am.   Waves 1 ft or less.

      High: 78 °F

      NE 9kt
      < 1ft

    • Saturday Night

      Saturday Night:NE wind 6 to 9 kt. Mostly cloudy during the early evening, then gradual clearing. Waves 1 ft or less.

      Low: 62 °F

      NE 9kt
      < 1ft

    • Sunday

      Sunday:ENE wind 6 to 9 kt. Sunny. Waves 1 ft or less.

      High: 78 °F

      ENE 9kt
      < 1ft

    • Sunday Night

      Sunday Night:ENE wind 5 to 7 kt. Mostly clear. Waves 1 ft or less.

      Low: 61 °F

      ENE 7kt
      < 1ft

    • Labor Day

      Labor Day:Variable winds less than 5 kt becoming ENE around 6 kt in the morning. Mostly sunny. Waves 1 ft or less.

      High: 79 °F

      ⇑ENE 6kt
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

      Low: 64 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSE 5 to 8 kt in the morning. Partly sunny. Waves 1 ft or less.

      High: 80 °F

      ⇑SSE 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 4, 2026
Forecast Valid: 9am EDT Sep 4, 2026-6pm EDT Sep 10, 2026

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Detailed Forecast

Today
Variable winds less than 5 kt becoming SSW around 6 kt in the afternoon. Showers and thunderstorms, mainly before 1pm. Areas of fog before 2pm. Waves 1 ft or less.
Tonight
Variable winds 5 kt or less. A chance of showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Waves 1 ft or less.
Saturday
NE wind 6 to 9 kt. A chance of showers before 7am. Waves 1 ft or less.
Saturday Night
NE wind 6 to 9 kt. Mostly cloudy during the early evening, then gradual clearing. Waves 1 ft or less.
Sunday
ENE wind 6 to 9 kt. Sunny. Waves 1 ft or less.
Sunday Night
ENE wind 5 to 7 kt. Mostly clear. Waves 1 ft or less.
Labor Day
Variable winds less than 5 kt becoming ENE around 6 kt in the morning. Mostly sunny. Waves 1 ft or less.
Monday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SSE 5 to 8 kt in the morning. Partly 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 4, 2026
Forecast Valid: 9am EDT Sep 4, 2026-6pm EDT Sep 10, 2026
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