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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NE wind around 7 kt. A slight chance of snow after 5pm.   Waves 1 ft or less.

      High: 41 °F

      NE 7kt
      < 1ft

    • Tonight

      Tonight:NE wind 9 to 11 kt, with gusts as high as 19 kt. A chance of snow, mainly before 2am.   Waves 1 ft or less.

      Low: 23 °F

      NE 11kt
      < 1ft

    • Sunday

      Sunday:NNE wind 7 to 10 kt. Partly sunny. Waves 1 ft or less.

      High: 30 °F

      NNE 10kt
      < 1ft

    • Sunday Night

      Sunday Night:ENE wind around 6 kt becoming ESE after midnight. Partly cloudy. Waves 1 ft or less.

      Low: 19 °F

      ENE 6kt
      < 1ft

    • Monday

      Monday:ESE wind 5 to 10 kt. Sunny. Waves 1 ft or less.

      High: 33 °F

      ESE 10kt
      < 1ft

    • Monday Night

      Monday Night:ESE wind 5 to 7 kt. A chance of snow between 1am and 4am, then a chance of rain after 4am.   Waves 1 ft or less.

      Low: 27 °F

      ESE 7kt
      < 1ft

    • Tuesday

      Tuesday:SE wind 5 to 7 kt becoming W in the afternoon. Rain, mainly after 7am.   Waves 1 ft or less.

      High: 41 °F

      SSE 7kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NNW wind 5 to 7 kt becoming NE after midnight. A chance of rain.   Waves 1 ft or less.

      Low: 31 °F

      NNW 7kt
      < 1ft

    • Wednesday

      Wednesday:ENE wind 6 to 8 kt becoming ESE in the afternoon. Mostly cloudy. Waves 1 ft or less.

      High: 49 °F

      E 8kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:49 pm EST Feb 28, 2026
Forecast Valid: 4pm EST Feb 28, 2026-6pm EST Mar 6, 2026

View Nearby Observations

Detailed Forecast

This Afternoon
NE wind around 7 kt. A slight chance of snow after 5pm. Waves 1 ft or less.
Tonight
NE wind 9 to 11 kt, with gusts as high as 19 kt. A chance of snow, mainly before 2am. Waves 1 ft or less.
Sunday
NNE wind 7 to 10 kt. Partly sunny. Waves 1 ft or less.
Sunday Night
ENE wind around 6 kt becoming ESE after midnight. Partly cloudy. Waves 1 ft or less.
Monday
ESE wind 5 to 10 kt. Sunny. Waves 1 ft or less.
Monday Night
ESE wind 5 to 7 kt. A chance of snow between 1am and 4am, then a chance of rain after 4am. Waves 1 ft or less.
Tuesday
SE wind 5 to 7 kt becoming W in the afternoon. Rain, mainly after 7am. Waves 1 ft or less.
Tuesday Night
NNW wind 5 to 7 kt becoming NE after midnight. A chance of rain. Waves 1 ft or less.
Wednesday
ENE wind 6 to 8 kt becoming ESE in the afternoon. Mostly cloudy. Waves 1 ft or less.

Wave heights are for ice free areas.

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

The water temperature at Belle Isle is 34 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: 3:49 pm EST Feb 28, 2026
Forecast Valid: 4pm EST Feb 28, 2026-6pm EST Mar 6, 2026
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