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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:E wind 5 to 7 kt. A slight chance of showers between 1pm and 2pm.   Waves 1 ft or less.

      High: 84 °F

      E 7kt
      < 1ft

    • Tonight

      Tonight:NE wind 5 to 7 kt. A slight chance of showers before 7pm.   Waves 1 ft or less.

      Low: 68 °F

      NE 7kt
      < 1ft

    • Saturday

      Saturday:ENE wind 5 to 8 kt becoming SE in the afternoon. Partly sunny. Waves 1 ft or less.

      High: 83 °F

      ESE 8kt
      < 1ft

    • Saturday Night

      Saturday Night:ESE wind 6 to 8 kt. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 11pm, then showers likely after 11pm.   Waves 1 ft or less.

      Low: 71 °F

      ESE 8kt
      < 1ft

    • Sunday

      Sunday:W wind 8 to 11 kt, with gusts as high as 18 kt. A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers likely after 5pm.   Waves 1 ft or less.

      High: 85 °F

      W 11kt
      < 1ft

    • Sunday Night

      Sunday Night:NW wind around 9 kt. Showers likely before 8pm.   Waves 1 ft or less.

      Low: 69 °F

      NW 9kt
      < 1ft

    • Monday

      Monday:NNW wind around 8 kt. Mostly sunny. Waves 1 ft or less.

      High: 81 °F

      NNW 8kt
      < 1ft

    • Monday Night

      Monday Night:NNE wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

      Low: 63 °F

      NNE 6kt⇓
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SW around 6 kt in the afternoon. Sunny. Waves 1 ft or less.

      High: 82 °F

      ⇑SW 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: 9:50 am EDT Aug 14, 2026
Forecast Valid: 10am EDT Aug 14, 2026-6pm EDT Aug 20, 2026

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Detailed Forecast

Today
E wind 5 to 7 kt. A slight chance of showers between 1pm and 2pm. Waves 1 ft or less.
Tonight
NE wind 5 to 7 kt. A slight chance of showers before 7pm. Waves 1 ft or less.
Saturday
ENE wind 5 to 8 kt becoming SE in the afternoon. Partly sunny. Waves 1 ft or less.
Saturday Night
ESE wind 6 to 8 kt. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 11pm, then showers likely after 11pm. Waves 1 ft or less.
Sunday
W wind 8 to 11 kt, with gusts as high as 18 kt. A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers likely after 5pm. Waves 1 ft or less.
Sunday Night
NW wind around 9 kt. Showers likely before 8pm. Waves 1 ft or less.
Monday
NNW wind around 8 kt. Mostly sunny. Waves 1 ft or less.
Monday Night
NNE wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SW around 6 kt in the afternoon. 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: 9:50 am EDT Aug 14, 2026
Forecast Valid: 10am EDT Aug 14, 2026-6pm EDT Aug 20, 2026
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