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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:SW wind around 15 kt, with gusts as high as 23 kt. Showers likely, mainly after 4am.   Waves 1 ft or less.

      Low: 60 °F

      SW 15kt
      < 1ft

    • Monday

      Monday:WSW wind 14 to 16 kt, with gusts as high as 23 kt. A chance of showers, mainly before 7am.   Waves 1 ft or less.

      High: 73 °F

      WSW 16kt
      < 1ft

    • Monday Night

      Monday Night:SSW wind 8 to 11 kt. A chance of showers, with thunderstorms also possible after 11pm.   Waves 1 ft or less.

      Low: 61 °F

      SSW 11kt
      < 1ft

    • Tuesday

      Tuesday:SW wind 12 to 16 kt, with gusts as high as 22 kt. A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 74 °F

      SW 16kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SW wind around 11 kt. Showers and possibly a thunderstorm before 5am, then showers likely.   Waves 1 ft or less.

      Low: 60 °F

      SW 11kt
      < 1ft

    • Wednesday

      Wednesday:SW wind 11 to 13 kt. Showers, mainly after 2pm.   Waves 1 ft or less.

      High: 69 °F

      SW 13kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind around 11 kt. Showers and possibly a thunderstorm before 2am, then a chance of showers.   Waves 1 ft or less.

      Low: 59 °F

      SSW 11kt
      < 1ft

    • Thursday

      Thursday:SW wind 12 to 15 kt. A chance of showers.   Waves 1 ft or less.

      High: 70 °F

      SW 15kt
      < 1ft

    • Thursday Night

      Thursday Night:W wind 7 to 10 kt. Partly cloudy. Waves 1 ft or less.

      Low: 54 °F

      W 10kt
      < 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 Apr 12, 2026
Forecast Valid: 11pm EDT Apr 12, 2026-6pm EDT Apr 19, 2026

View Nearby Observations

Detailed Forecast

Overnight
SW wind around 15 kt, with gusts as high as 23 kt. Showers likely, mainly after 4am. Waves 1 ft or less.
Monday
WSW wind 14 to 16 kt, with gusts as high as 23 kt. A chance of showers, mainly before 7am. Waves 1 ft or less.
Monday Night
SSW wind 8 to 11 kt. A chance of showers, with thunderstorms also possible after 11pm. Waves 1 ft or less.
Tuesday
SW wind 12 to 16 kt, with gusts as high as 22 kt. A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.
Tuesday Night
SW wind around 11 kt. Showers and possibly a thunderstorm before 5am, then showers likely. Waves 1 ft or less.
Wednesday
SW wind 11 to 13 kt. Showers, mainly after 2pm. Waves 1 ft or less.
Wednesday Night
SSW wind around 11 kt. Showers and possibly a thunderstorm before 2am, then a chance of showers. Waves 1 ft or less.
Thursday
SW wind 12 to 15 kt. A chance of showers. Waves 1 ft or less.
Thursday Night
W wind 7 to 10 kt. Partly cloudy. Waves 1 ft or less.

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

The water temperature at Belle Isle is 46 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 Apr 12, 2026
Forecast Valid: 11pm EDT Apr 12, 2026-6pm EDT Apr 19, 2026
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