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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:E wind 16 to 19 kt, with gusts as high as 31 kt. A slight chance of showers before midnight, then a slight chance of showers after 5am.   Waves 1 ft or less.

      Low: 61 °F

      E 19kt
      < 1ft

    • Wednesday

      Wednesday:E wind around 18 kt, with gusts as high as 28 kt. A chance of showers, mainly before 11am.   Waves 1 ft or less.

      High: 63 °F

      E 18kt
      < 1ft

    • Wednesday Night

      Wednesday Night:E wind 12 to 15 kt, with gusts as high as 26 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.

      Low: 56 °F

      E 15kt
      < 1ft

    • Thursday

      Thursday:E wind 11 to 13 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.

      High: 64 °F

      E 13kt
      < 1ft

    • Thursday Night

      Thursday Night:E wind 7 to 11 kt. Mostly clear. Waves 1 ft or less.

      Low: 53 °F

      E 11kt
      < 1ft

    • Friday

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

      High: 65 °F

      ENE 9kt
      < 1ft

    • Friday Night

      Friday Night:NNE wind around 6 kt. Mostly clear. Waves 1 ft or less.

      Low: 51 °F

      NNE 6kt
      < 1ft

    • Saturday

      Saturday:NNE wind around 7 kt becoming ENE in the afternoon. Sunny. Waves 1 ft or less.

      High: 66 °F

      NNE 7kt
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

      Low: 50 °F

      Light Wind
      < 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 Sep 22, 2026
Forecast Valid: 10pm EDT Sep 22, 2026-6pm EDT Sep 29, 2026

View Nearby Observations

Detailed Forecast

Tonight
E wind 16 to 19 kt, with gusts as high as 31 kt. A slight chance of showers before midnight, then a slight chance of showers after 5am. Waves 1 ft or less.
Wednesday
E wind around 18 kt, with gusts as high as 28 kt. A chance of showers, mainly before 11am. Waves 1 ft or less.
Wednesday Night
E wind 12 to 15 kt, with gusts as high as 26 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.
Thursday
E wind 11 to 13 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.
Thursday Night
E wind 7 to 11 kt. Mostly clear. Waves 1 ft or less.
Friday
ENE wind 6 to 9 kt. Sunny. Waves 1 ft or less.
Friday Night
NNE wind around 6 kt. Mostly clear. Waves 1 ft or less.
Saturday
NNE wind around 7 kt becoming ENE in the afternoon. Sunny. Waves 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

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

The water temperature at Belle Isle is 64 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 Sep 22, 2026
Forecast Valid: 10pm EDT Sep 22, 2026-6pm EDT Sep 29, 2026
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