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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:SSW wind 13 to 17 kt, with gusts as high as 23 kt. A slight chance of showers, mainly between 8pm and 10pm.   Waves 1 ft or less.

      Low: 50 °F

      SSW 17kt
      < 1ft

    • Monday

      Monday:SW wind 11 to 16 kt, with gusts as high as 22 kt. Sunny. Waves 1 ft or less.

      High: 71 °F

      SW 16kt
      < 1ft

    • Monday Night

      Monday Night:SW wind around 13 kt, with gusts as high as 20 kt. Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am.   Waves 1 ft or less.

      Low: 55 °F

      SW 13kt
      < 1ft

    • Tuesday

      Tuesday:SW wind around 11 kt becoming WNW in the afternoon. Showers likely before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers after 5pm.   Waves 1 ft or less.

      High: 61 °F

      W 11kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NNW wind around 8 kt. Showers, mainly before 2am.   Waves 1 ft or less.

      Low: 44 °F

      NNW 8kt
      < 1ft

    • Wednesday

      Wednesday:NNW wind around 7 kt. A chance of showers before 8am.   Waves 1 ft or less.

      High: 56 °F

      NNW 7kt
      < 1ft

    • Wednesday Night

      Wednesday Night:WNW wind around 7 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 42 °F

      WNW 7kt
      < 1ft

    • Thursday

      Thursday:WNW wind 6 to 11 kt. A chance of showers.   Waves 1 ft or less.

      High: 52 °F

      WNW 11kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 6 to 9 kt. A chance of showers.   Waves 1 ft or less.

      Low: 41 °F

      W 9kt
      < 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 May 3, 2026
Forecast Valid: 6pm EDT May 3, 2026-6pm EDT May 10, 2026

View Nearby Observations

Detailed Forecast

Tonight
SSW wind 13 to 17 kt, with gusts as high as 23 kt. A slight chance of showers, mainly between 8pm and 10pm. Waves 1 ft or less.
Monday
SW wind 11 to 16 kt, with gusts as high as 22 kt. Sunny. Waves 1 ft or less.
Monday Night
SW wind around 13 kt, with gusts as high as 20 kt. Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am. Waves 1 ft or less.
Tuesday
SW wind around 11 kt becoming WNW in the afternoon. Showers likely before 2pm, then showers and possibly a thunderstorm between 2pm and 5pm, then showers after 5pm. Waves 1 ft or less.
Tuesday Night
NNW wind around 8 kt. Showers, mainly before 2am. Waves 1 ft or less.
Wednesday
NNW wind around 7 kt. A chance of showers before 8am. Waves 1 ft or less.
Wednesday Night
WNW wind around 7 kt. Mostly cloudy. Waves 1 ft or less.
Thursday
WNW wind 6 to 11 kt. A chance of showers. Waves 1 ft or less.
Thursday Night
W wind 6 to 9 kt. A chance of showers. Waves 1 ft or less.

See Lake Erie Open Lake Forecast for days 3 through 5.

The water temperature at Belle Isle is 51 degrees.


*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: 41.85°N 83.39°W
Last Update: 4:24 pm EDT May 3, 2026
Forecast Valid: 6pm EDT May 3, 2026-6pm EDT May 10, 2026
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