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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]
    • Friday

      Friday:Variable winds less than 5 kt becoming S 5 to 8 kt in the morning. Widespread smoke, mainly before 5pm.  Waves 1 ft or less.

      High: 89 °F

      ⇑S 8kt
      < 1ft

    • Friday Night

      Friday Night:S wind 7 to 9 kt becoming SW after midnight. Widespread smoke, mainly between 7pm and 8pm.  Waves 1 ft or less.

      Low: 71 °F

      SW 9kt
      < 1ft

    • Saturday

      Saturday:WSW wind 11 to 14 kt, with gusts as high as 21 kt. Showers and possibly a thunderstorm, mainly after 2pm.   Waves 1 ft or less.

      High: 91 °F

      WSW 14kt
      < 1ft

    • Saturday Night

      Saturday Night:NW wind 8 to 11 kt becoming N in the evening. Showers and possibly a thunderstorm before 8pm.   Waves 1 ft or less.

      Low: 75 °F

      NW 11kt
      < 1ft

    • Sunday

      Sunday:N wind around 7 kt. Sunny. Waves 1 ft or less.

      High: 83 °F

      N 7kt
      < 1ft

    • Sunday Night

      Sunday Night:E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Waves 1 ft or less.

      Low: 67 °F

      E 7kt⇓
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. Mostly sunny. Waves 1 ft or less.

      High: 85 °F

      ⇑SSW 9kt
      < 1ft

    • Monday Night

      Monday Night:SW wind around 10 kt. Showers likely and possibly a thunderstorm.   Waves 1 ft or less.

      Low: 66 °F

      SW 10kt
      < 1ft

    • Tuesday

      Tuesday:WNW wind around 12 kt, with gusts as high as 19 kt. A chance of showers.   Waves 1 ft or less.

      High: 84 °F

      WNW 12kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:49 pm EDT Jul 16, 2026
Forecast Valid: 1am EDT Jul 17, 2026-6pm EDT Jul 23, 2026

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Detailed Forecast

Friday
Variable winds less than 5 kt becoming S 5 to 8 kt in the morning. Widespread smoke, mainly before 5pm. Waves 1 ft or less.
Friday Night
S wind 7 to 9 kt becoming SW after midnight. Widespread smoke, mainly between 7pm and 8pm. Waves 1 ft or less.
Saturday
WSW wind 11 to 14 kt, with gusts as high as 21 kt. Showers and possibly a thunderstorm, mainly after 2pm. Waves 1 ft or less.
Saturday Night
NW wind 8 to 11 kt becoming N in the evening. Showers and possibly a thunderstorm before 8pm. Waves 1 ft or less.
Sunday
N wind around 7 kt. Sunny. Waves 1 ft or less.
Sunday Night
E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Waves 1 ft or less.
Monday
Variable winds less than 5 kt becoming SSW 5 to 9 kt in the morning. Mostly sunny. Waves 1 ft or less.
Monday Night
SW wind around 10 kt. Showers likely and possibly a thunderstorm. Waves 1 ft or less.
Tuesday
WNW wind around 12 kt, with gusts as high as 19 kt. A chance of showers. 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: 9:49 pm EDT Jul 16, 2026
Forecast Valid: 1am EDT Jul 17, 2026-6pm EDT Jul 23, 2026
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