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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]
    • Today

      Today:NNE wind 11 to 15 kt becoming E in the afternoon. Winds could gust as high as 21 kt. Sunny. Waves 1 ft or less.

      High: 60 °F

      E 15kt
      < 1ft

    • Tonight

      Tonight:ENE wind around 14 kt, with gusts as high as 21 kt. Partly cloudy. Waves 1 ft or less.

      Low: 51 °F

      ENE 14kt
      < 1ft

    • Friday

      Friday:E wind 16 to 18 kt, with gusts as high as 25 kt. A chance of showers after 2pm.   Waves 1 ft or less.

      High: 63 °F

      E 18kt
      < 1ft

    • Friday Night

      Friday Night:E wind 17 to 19 kt, with gusts as high as 27 kt. Showers, mainly after 8pm.   Waves 1 ft or less.

      Low: 55 °F

      E 19kt
      < 1ft

    • Saturday

      Saturday:E wind 15 to 17 kt, with gusts as high as 25 kt. Showers.   Waves 1 ft or less.

      High: 70 °F

      E 17kt
      < 1ft

    • Saturday Night

      Saturday Night:W wind 6 to 10 kt. Showers likely before 8pm.   Waves 1 ft or less.

      Low: 57 °F

      W 10kt
      < 1ft

    • Sunday

      Sunday:WSW wind 5 to 7 kt becoming S in the afternoon. A chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 75 °F

      S 7kt
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms.   Waves 1 ft or less.

      Low: 59 °F

      Light Wind
      < 1ft

    • Memorial Day

      Memorial Day:Variable winds less than 5 kt becoming E around 6 kt in the afternoon. Partly sunny. Waves 1 ft or less.

      High: 75 °F

      ⇑E 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 21, 2026
Forecast Valid: 7am EDT May 21, 2026-6pm EDT May 27, 2026

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Detailed Forecast

Today
NNE wind 11 to 15 kt becoming E in the afternoon. Winds could gust as high as 21 kt. Sunny. Waves 1 ft or less.
Tonight
ENE wind around 14 kt, with gusts as high as 21 kt. Partly cloudy. Waves 1 ft or less.
Friday
E wind 16 to 18 kt, with gusts as high as 25 kt. A chance of showers after 2pm. Waves 1 ft or less.
Friday Night
E wind 17 to 19 kt, with gusts as high as 27 kt. Showers, mainly after 8pm. Waves 1 ft or less.
Saturday
E wind 15 to 17 kt, with gusts as high as 25 kt. Showers. Waves 1 ft or less.
Saturday Night
W wind 6 to 10 kt. Showers likely before 8pm. Waves 1 ft or less.
Sunday
WSW wind 5 to 7 kt becoming S in the afternoon. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.
Sunday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms. Waves 1 ft or less.
Memorial Day
Variable winds less than 5 kt becoming E around 6 kt in the afternoon. Partly sunny. Waves 1 ft or less.

*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 21, 2026
Forecast Valid: 7am EDT May 21, 2026-6pm EDT May 27, 2026
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