Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds less than 5 kt becoming W around 6 kt in the afternoon. Showers and thunderstorms, mainly before 2pm.  Patchy fog before 2pm.  Waves 1 ft or less.

      High: 81 °F

      ⇑W 6kt
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Showers and thunderstorms likely, mainly before 1am, then showers likely and possibly a thunderstorm after 2am.   Waves 1 ft or less.

      Low: 70 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:NE wind 7 to 10 kt. Showers and thunderstorms likely before 8am, then a chance of showers between 8am and 9am.   Waves 1 ft or less.

      High: 76 °F

      NE 10kt
      < 1ft

    • Saturday Night

      Saturday Night:NE wind 7 to 9 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.

      Low: 63 °F

      NE 9kt
      < 1ft

    • Sunday

      Sunday:NNE wind 8 to 10 kt becoming E in the afternoon. Sunny. Waves 1 ft or less.

      High: 74 °F

      NE 10kt
      < 1ft

    • Sunday Night

      Sunday Night:ENE wind 6 to 8 kt. Mostly clear. Waves 1 ft or less.

      Low: 63 °F

      ENE 8kt
      < 1ft

    • Labor Day

      Labor Day:E wind 5 to 8 kt. Sunny. Waves 1 ft or less.

      High: 76 °F

      E 8kt
      < 1ft

    • Monday Night

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

      Low: 65 °F

      E 6kt
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming ESE 5 to 9 kt in the morning. Mostly sunny. Waves 1 ft or less.

      High: 77 °F

      ⇑ESE 9kt
      < 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 am EDT Sep 4, 2026
Forecast Valid: 5am EDT Sep 4, 2026-6pm EDT Sep 10, 2026

View Nearby Observations

Detailed Forecast

Today
Variable winds less than 5 kt becoming W around 6 kt in the afternoon. Showers and thunderstorms, mainly before 2pm. Patchy fog before 2pm. Waves 1 ft or less.
Tonight
Variable winds 5 kt or less. Showers and thunderstorms likely, mainly before 1am, then showers likely and possibly a thunderstorm after 2am. Waves 1 ft or less.
Saturday
NE wind 7 to 10 kt. Showers and thunderstorms likely before 8am, then a chance of showers between 8am and 9am. Waves 1 ft or less.
Saturday Night
NE wind 7 to 9 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.
Sunday
NNE wind 8 to 10 kt becoming E in the afternoon. Sunny. Waves 1 ft or less.
Sunday Night
ENE wind 6 to 8 kt. Mostly clear. Waves 1 ft or less.
Labor Day
E wind 5 to 8 kt. Sunny. Waves 1 ft or less.
Monday Night
E wind around 6 kt. Partly cloudy. Waves 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming ESE 5 to 9 kt in the morning. Mostly sunny. Waves 1 ft or less.

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

The water temperature at Belle Isle is 76 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 am EDT Sep 4, 2026
Forecast Valid: 5am EDT Sep 4, 2026-6pm EDT Sep 10, 2026
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