Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:W wind around 6 kt becoming S in the afternoon. Showers and thunderstorms likely, mainly before 2pm, then showers likely and possibly a thunderstorm after 3pm.   Waves 1 ft or less.

      High: 78 °F

      W 6kt
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am.   Waves 1 ft or less.

      Low: 66 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. A chance of showers and thunderstorms between 4pm and 5pm.   Waves 1 ft or less.

      High: 80 °F

      Light Wind
      < 1ft

    • Wednesday Night

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

      Low: 67 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming NNW around 6 kt in the afternoon. A chance of showers after 2pm.   Waves 1 ft or less.

      High: 79 °F

      ⇑NNW 6kt
      < 1ft

    • Thursday Night

      Thursday Night:WNW wind 5 to 7 kt becoming N after midnight. A chance of showers before 8pm.   Waves 1 ft or less.

      Low: 65 °F

      N 7kt
      < 1ft

    • Friday

      Friday:N wind around 9 kt becoming ENE in the afternoon. Sunny. Waves 1 ft or less.

      High: 76 °F

      NNE 9kt
      < 1ft

    • Friday Night

      Friday Night:ENE wind 6 to 8 kt. Partly cloudy. Waves 1 ft or less.

      Low: 61 °F

      ENE 8kt
      < 1ft

    • Saturday

      Saturday:ENE wind 6 to 9 kt becoming ESE in the afternoon. Mostly sunny. Waves 1 ft or less.

      High: 74 °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: 5:35 am EDT Aug 11, 2026
Forecast Valid: 8am EDT Aug 11, 2026-6pm EDT Aug 17, 2026

View Nearby Observations

Detailed Forecast

Today
W wind around 6 kt becoming S in the afternoon. Showers and thunderstorms likely, mainly before 2pm, then showers likely and possibly a thunderstorm after 3pm. Waves 1 ft or less.
Tonight
Variable winds 5 kt or less. Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Waves 1 ft or less.
Wednesday
Variable winds 5 kt or less. A chance of showers and thunderstorms between 4pm and 5pm. Waves 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming NNW around 6 kt in the afternoon. A chance of showers after 2pm. Waves 1 ft or less.
Thursday Night
WNW wind 5 to 7 kt becoming N after midnight. A chance of showers before 8pm. Waves 1 ft or less.
Friday
N wind around 9 kt becoming ENE in the afternoon. Sunny. Waves 1 ft or less.
Friday Night
ENE wind 6 to 8 kt. Partly cloudy. Waves 1 ft or less.
Saturday
ENE wind 6 to 9 kt becoming ESE in the afternoon. 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 77 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: 5:35 am EDT Aug 11, 2026
Forecast Valid: 8am EDT Aug 11, 2026-6pm EDT Aug 17, 2026
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