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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:SW wind around 16 kt becoming NW in the afternoon. Winds could gust as high as 29 kt. Rain likely, possibly mixing with snow after 2pm, then gradually ending.   Waves 1 ft or less.

      High: 37 °FFalling Temperatures

      SW 16kt
      < 1ft

    • Tonight

      Tonight:NW wind 11 to 15 kt, with gusts as high as 22 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.

      Low: 21 °F

      NW 15kt
      < 1ft

    • Thursday

      Thursday:W wind 10 to 12 kt. Increasing clouds. Waves 1 ft or less.

      High: 27 °F

      W 12kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 5 to 9 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 20 °F

      W 9kt
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming S 5 to 7 kt in the morning. A chance of snow.   Waves 1 ft or less.

      High: 27 °F

      ⇑S 7kt
      < 1ft

    • Friday Night

      Friday Night:W wind 6 to 13 kt, with gusts as high as 20 kt. A chance of snow before 1am.   Waves 1 ft or less.

      Low: 17 °F

      W 13kt
      < 1ft

    • Saturday

      Saturday:W wind 12 to 14 kt, with gusts as high as 21 kt. A chance of snow after 1pm.   Waves 1 ft or less.

      High: 22 °F

      W 14kt
      < 1ft

    • Saturday Night

      Saturday Night:WNW wind 10 to 12 kt. A chance of snow.   Waves 1 ft or less.

      Low: 12 °F

      WNW 12kt
      < 1ft

    • Sunday

      Sunday:WNW wind 10 to 12 kt. Mostly sunny. Waves 1 ft or less.

      High: 17 °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: 5:13 am EST Dec 10, 2025
Forecast Valid: 6am EST Dec 10, 2025-6pm EST Dec 16, 2025

View Nearby Observations

Detailed Forecast

Today
SW wind around 16 kt becoming NW in the afternoon. Winds could gust as high as 29 kt. Rain likely, possibly mixing with snow after 2pm, then gradually ending. Waves 1 ft or less.
Tonight
NW wind 11 to 15 kt, with gusts as high as 22 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.
Thursday
W wind 10 to 12 kt. Increasing clouds. Waves 1 ft or less.
Thursday Night
W wind 5 to 9 kt. Mostly cloudy. Waves 1 ft or less.
Friday
Variable winds less than 5 kt becoming S 5 to 7 kt in the morning. A chance of snow. Waves 1 ft or less.
Friday Night
W wind 6 to 13 kt, with gusts as high as 20 kt. A chance of snow before 1am. Waves 1 ft or less.
Saturday
W wind 12 to 14 kt, with gusts as high as 21 kt. A chance of snow after 1pm. Waves 1 ft or less.
Saturday Night
WNW wind 10 to 12 kt. A chance of snow. Waves 1 ft or less.
Sunday
WNW wind 10 to 12 kt. Mostly sunny. Waves 1 ft or less.

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

The water temperature at Belle Isle is 32 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: 5:13 am EST Dec 10, 2025
Forecast Valid: 6am EST Dec 10, 2025-6pm EST Dec 16, 2025
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