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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:Variable winds 5 kt or less. A chance of rain and thunderstorms, mainly before 1am.   Waves 1 ft or less.

      Low: 49 °F

      Light Wind
      < 1ft

    • Friday

      Friday:SSW wind around 10 kt becoming NNW in the afternoon. Rain, mainly before noon.   Waves 1 ft or less.

      High: 58 °F

      SW 10kt
      < 1ft

    • Friday Night

      Friday Night:N wind around 6 kt. Mostly cloudy. Waves 1 ft or less.

      Low: 39 °F

      N 6kt
      < 1ft

    • Saturday

      Saturday:NE wind 5 to 7 kt becoming ESE in the afternoon. Sunny. Waves 1 ft or less.

      High: 49 °F

      ESE 7kt
      < 1ft

    • Saturday Night

      Saturday Night:ESE wind 6 to 8 kt. Increasing clouds. Waves 1 ft or less.

      Low: 41 °F

      ESE 8kt
      < 1ft

    • Sunday

      Sunday:SSE wind 9 to 14 kt becoming SSW in the afternoon. Mostly cloudy. Waves 1 ft or less.

      High: 71 °F

      SSW 14kt
      < 1ft

    • Sunday Night

      Sunday Night:SW wind 13 to 15 kt, with gusts as high as 23 kt. A chance of rain after 2am.   Waves 1 ft or less.

      Low: 60 °F

      SW 15kt
      < 1ft

    • Monday

      Monday:SW wind 16 to 18 kt, with gusts as high as 24 kt. A chance of rain.   Waves 1 ft or less.

      High: 72 °F

      SW 18kt
      < 1ft

    • Monday Night

      Monday Night:SW wind around 12 kt. A chance of rain.   Waves 1 ft or less.

      Low: 60 °F

      SW 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: 4:24 pm EDT Apr 9, 2026
Forecast Valid: 12am EDT Apr 10, 2026-6pm EDT Apr 16, 2026

View Nearby Observations

Detailed Forecast

Overnight
Variable winds 5 kt or less. A chance of rain and thunderstorms, mainly before 1am. Waves 1 ft or less.
Friday
SSW wind around 10 kt becoming NNW in the afternoon. Rain, mainly before noon. Waves 1 ft or less.
Friday Night
N wind around 6 kt. Mostly cloudy. Waves 1 ft or less.
Saturday
NE wind 5 to 7 kt becoming ESE in the afternoon. Sunny. Waves 1 ft or less.
Saturday Night
ESE wind 6 to 8 kt. Increasing clouds. Waves 1 ft or less.
Sunday
SSE wind 9 to 14 kt becoming SSW in the afternoon. Mostly cloudy. Waves 1 ft or less.
Sunday Night
SW wind 13 to 15 kt, with gusts as high as 23 kt. A chance of rain after 2am. Waves 1 ft or less.
Monday
SW wind 16 to 18 kt, with gusts as high as 24 kt. A chance of rain. Waves 1 ft or less.
Monday Night
SW wind around 12 kt. A chance of rain. Waves 1 ft or less.

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

The water temperature at Belle Isle is 44 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 9, 2026
Forecast Valid: 12am EDT Apr 10, 2026-6pm EDT Apr 16, 2026
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