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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms.   Waves 1 ft or less.

      Low: 71 °F

      S 8kt⇓
      < 1ft

    • Monday

      Monday:SW wind 5 to 9 kt. A chance of showers and thunderstorms, mainly before 9am.   Waves 1 ft or less.

      High: 87 °F

      SW 9kt
      < 1ft

    • Monday Night

      Monday Night:SSW wind around 8 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 75 °F

      SSW 8kt
      < 1ft

    • Tuesday

      Tuesday:WSW wind 7 to 9 kt. Mostly sunny. Waves 1 ft or less.

      High: 91 °F

      WSW 9kt
      < 1ft

    • Tuesday Night

      Tuesday Night:WSW wind around 7 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 75 °F

      WSW 7kt
      < 1ft

    • Wednesday

      Wednesday:SW wind 5 to 9 kt. Mostly sunny. Waves 1 ft or less.

      High: 92 °F

      SW 9kt
      < 1ft

    • Wednesday Night

      Wednesday Night:W wind around 6 kt. A chance of showers and thunderstorms.   Waves 1 ft or less.

      Low: 73 °F

      W 6kt
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming W around 6 kt in the morning. A chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 86 °F

      ⇑W 6kt
      < 1ft

    • Thursday Night

      Thursday Night:NNE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms.   Waves 1 ft or less.

      Low: 69 °F

      NNE 6kt⇓
      < 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 pm EDT Aug 30, 2026
Forecast Valid: 6pm EDT Aug 30, 2026-6pm EDT Sep 6, 2026

View Nearby Observations

Detailed Forecast

Tonight
S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms. Waves 1 ft or less.
Monday
SW wind 5 to 9 kt. A chance of showers and thunderstorms, mainly before 9am. Waves 1 ft or less.
Monday Night
SSW wind around 8 kt. Mostly cloudy. Waves 1 ft or less.
Tuesday
WSW wind 7 to 9 kt. Mostly sunny. Waves 1 ft or less.
Tuesday Night
WSW wind around 7 kt. Mostly cloudy. Waves 1 ft or less.
Wednesday
SW wind 5 to 9 kt. Mostly sunny. Waves 1 ft or less.
Wednesday Night
W wind around 6 kt. A chance of showers and thunderstorms. Waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming W around 6 kt in the morning. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.
Thursday Night
NNE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms. 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 pm EDT Aug 30, 2026
Forecast Valid: 6pm EDT Aug 30, 2026-6pm EDT Sep 6, 2026
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