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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Friday

      Friday:Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Partly sunny. Waves 1 ft or less.

      High: 67 °F

      ⇑SSW 10kt
      < 1ft

    • Friday Night

      Friday Night:SSW wind around 7 kt. Partly cloudy. Waves 1 ft or less.

      Low: 53 °F

      SSW 7kt
      < 1ft

    • Saturday

      Saturday:S wind 9 to 14 kt. Showers, with thunderstorms also possible after 2pm.   Waves 1 ft or less.

      High: 77 °F

      S 14kt
      < 1ft

    • Saturday Night

      Saturday Night:WSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms.   Waves 1 ft or less.

      Low: 58 °F

      WSW 8kt⇓
      < 1ft

    • Sunday

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

      High: 76 °F

      ⇑ESE 9kt
      < 1ft

    • Sunday Night

      Sunday Night:S wind around 9 kt. Partly cloudy. Waves 1 ft or less.

      Low: 62 °F

      S 9kt
      < 1ft

    • Monday

      Monday:SSW wind 9 to 17 kt. Sunny. Waves 1 ft or less.

      High: 86 °F

      SSW 17kt
      < 1ft

    • Monday Night

      Monday Night:SSW wind 10 to 12 kt, with gusts as high as 18 kt. A chance of showers and thunderstorms after 2am.   Waves 1 ft or less.

      Low: 69 °F

      SSW 12kt
      < 1ft

    • Tuesday

      Tuesday:SW wind 13 to 21 kt. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm after 2pm.   Waves 1 ft or less.

      High: 84 °F

      SW 21kt
      < 1ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:24 am EDT May 15, 2026
Forecast Valid: 4am EDT May 15, 2026-6pm EDT May 21, 2026

View Nearby Observations

Detailed Forecast

Friday
Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Partly sunny. Waves 1 ft or less.
Friday Night
SSW wind around 7 kt. Partly cloudy. Waves 1 ft or less.
Saturday
S wind 9 to 14 kt. Showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.
Saturday Night
WSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms. Waves 1 ft or less.
Sunday
Variable winds less than 5 kt becoming ESE 5 to 9 kt in the morning. Partly sunny. Waves 1 ft or less.
Sunday Night
S wind around 9 kt. Partly cloudy. Waves 1 ft or less.
Monday
SSW wind 9 to 17 kt. Sunny. Waves 1 ft or less.
Monday Night
SSW wind 10 to 12 kt, with gusts as high as 18 kt. A chance of showers and thunderstorms after 2am. Waves 1 ft or less.
Tuesday
SW wind 13 to 21 kt. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm 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 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: 3:24 am EDT May 15, 2026
Forecast Valid: 4am EDT May 15, 2026-6pm EDT May 21, 2026
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