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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SW wind around 9 kt. Mostly sunny. Waves 1 ft or less.

      High: 89 °F

      SW 9kt
      < 1ft

    • Tonight

      Tonight:SSW wind around 7 kt. Mostly clear. Waves 1 ft or less.

      Low: 75 °F

      SSW 7kt
      < 1ft

    • Sunday

      Sunday:SW wind 9 to 12 kt. A chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 88 °F

      SW 12kt
      < 1ft

    • Sunday Night

      Sunday Night:W wind 5 to 9 kt becoming NNW after midnight. A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am.   Waves 1 ft or less.

      Low: 71 °F

      W 9kt
      < 1ft

    • Monday

      Monday:N wind around 7 kt. A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm.   Waves 1 ft or less.

      High: 79 °F

      N 7kt
      < 1ft

    • Monday Night

      Monday Night:NE wind around 6 kt. Partly cloudy. Waves 1 ft or less.

      Low: 67 °F

      NE 6kt
      < 1ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

      High: 81 °F

      Light Wind
      < 1ft

    • Tuesday Night

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

      Low: 70 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming SSW around 6 kt in the morning. A chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 83 °F

      ⇑SSW 6kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:35 am EDT Jul 5, 2025
Forecast Valid: 2pm EDT Jul 5, 2025-6pm EDT Jul 11, 2025

View Nearby Observations

Detailed Forecast

This Afternoon
SW wind around 9 kt. Mostly sunny. Waves 1 ft or less.
Tonight
SSW wind around 7 kt. Mostly clear. Waves 1 ft or less.
Sunday
SW wind 9 to 12 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.
Sunday Night
W wind 5 to 9 kt becoming NNW after midnight. A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Waves 1 ft or less.
Monday
N wind around 7 kt. A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm. Waves 1 ft or less.
Monday Night
NE wind around 6 kt. Partly cloudy. Waves 1 ft or less.
Tuesday
Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming SSW around 6 kt in the morning. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

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

The water temperature at Belle Isle is 74 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: 9:35 am EDT Jul 5, 2025
Forecast Valid: 2pm EDT Jul 5, 2025-6pm EDT Jul 11, 2025
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