Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:NE wind 7 to 9 kt. Mostly cloudy. Waves 1 ft or less.

      High: 63 °F

      NE 9kt
      < 1ft

    • Tonight

      Tonight:NNE wind around 11 kt, with gusts as high as 18 kt. Cloudy during the early evening, then gradual clearing. Waves 1 ft or less.

      Low: 45 °F

      NNE 11kt
      < 1ft

    • Thursday

      Thursday:E wind 12 to 15 kt. Increasing clouds. Waves 1 ft or less.

      High: 60 °F

      E 15kt
      < 1ft

    • Thursday Night

      Thursday Night:ENE wind around 15 kt, with gusts as high as 21 kt. Increasing clouds. Waves 1 ft or less.

      Low: 51 °F

      ENE 15kt
      < 1ft

    • Friday

      Friday:E wind 17 to 20 kt, with gusts as high as 27 kt. Showers likely after 2pm.   Waves 1 ft or less.

      High: 62 °F

      E 20kt
      < 1ft

    • Friday Night

      Friday Night:E wind 17 to 20 kt, with gusts as high as 29 kt. Showers, with thunderstorms also possible after 2am.   Waves 1 ft or less.

      Low: 55 °F

      E 20kt
      < 1ft

    • Saturday

      Saturday:ESE wind around 14 kt becoming SSW in the afternoon. Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 70 °F

      ESE 14kt
      < 1ft

    • Saturday Night

      Saturday Night:SE wind 5 to 9 kt becoming SSW after midnight. A chance of showers and thunderstorms before 8pm.   Waves 1 ft or less.

      Low: 57 °F

      SE 9kt
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. A chance of showers.   Waves 1 ft or less.

      High: 74 °F

      ⇑SSE 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: 4:24 am EDT May 20, 2026
Forecast Valid: 11am EDT May 20, 2026-6pm EDT May 26, 2026

View Nearby Observations

Detailed Forecast

Today
NE wind 7 to 9 kt. Mostly cloudy. Waves 1 ft or less.
Tonight
NNE wind around 11 kt, with gusts as high as 18 kt. Cloudy during the early evening, then gradual clearing. Waves 1 ft or less.
Thursday
E wind 12 to 15 kt. Increasing clouds. Waves 1 ft or less.
Thursday Night
ENE wind around 15 kt, with gusts as high as 21 kt. Increasing clouds. Waves 1 ft or less.
Friday
E wind 17 to 20 kt, with gusts as high as 27 kt. Showers likely after 2pm. Waves 1 ft or less.
Friday Night
E wind 17 to 20 kt, with gusts as high as 29 kt. Showers, with thunderstorms also possible after 2am. Waves 1 ft or less.
Saturday
ESE wind around 14 kt becoming SSW in the afternoon. Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.
Saturday Night
SE wind 5 to 9 kt becoming SSW after midnight. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.
Sunday
Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. A chance of showers. 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: 4:24 am EDT May 20, 2026
Forecast Valid: 11am EDT May 20, 2026-6pm EDT May 26, 2026
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