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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:E wind 18 to 20 kt, with gusts as high as 27 kt. Showers likely, with thunderstorms also possible after 5am.   Waves 1 ft or less.

      Low: 54 °F

      E 20kt
      < 1ft

    • Saturday

      Saturday:E wind 14 to 18 kt, with gusts as high as 25 kt. Showers and possibly a thunderstorm.   Waves 1 ft or less.

      High: 68 °F

      E 18kt
      < 1ft

    • Saturday Night

      Saturday Night:W wind 5 to 9 kt. A chance of showers before 7pm.   Waves 1 ft or less.

      Low: 55 °F

      W 9kt
      < 1ft

    • Sunday

      Sunday:Variable winds 5 kt or less. Showers likely after 2pm.   Waves 1 ft or less.

      High: 74 °F

      Light Wind
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Showers likely, mainly before 8pm.   Waves 1 ft or less.

      Low: 57 °F

      Light Wind
      < 1ft

    • Memorial Day

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

      High: 75 °F

      Light Wind
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

      Low: 59 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SE around 6 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

      High: 78 °F

      ⇑SE 6kt
      < 1ft

    • Tuesday Night

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

      Low: 62 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:35 pm EDT May 22, 2026
Forecast Valid: 6pm EDT May 22, 2026-6pm EDT May 29, 2026

View Nearby Observations

Detailed Forecast

Tonight
E wind 18 to 20 kt, with gusts as high as 27 kt. Showers likely, with thunderstorms also possible after 5am. Waves 1 ft or less.
Saturday
E wind 14 to 18 kt, with gusts as high as 25 kt. Showers and possibly a thunderstorm. Waves 1 ft or less.
Saturday Night
W wind 5 to 9 kt. A chance of showers before 7pm. Waves 1 ft or less.
Sunday
Variable winds 5 kt or less. Showers likely after 2pm. Waves 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Showers likely, mainly before 8pm. Waves 1 ft or less.
Memorial Day
Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
Monday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SE around 6 kt in the afternoon. Mostly sunny. Waves 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly cloudy. Waves 1 ft or less.

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

The water temperature at Belle Isle is missing.


*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: 4:35 pm EDT May 22, 2026
Forecast Valid: 6pm EDT May 22, 2026-6pm EDT May 29, 2026
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