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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:ESE wind around 7 kt. Mostly sunny. Waves 1 ft or less.

      High: 52 °F

      ESE 7kt
      < 1ft

    • Tonight

      Tonight:SE wind 6 to 9 kt becoming WSW after midnight. Partly cloudy. Waves 1 ft or less.

      Low: 43 °FRising Temperatures

      SSW 9kt
      < 1ft

    • Sunday

      Sunday:W wind 6 to 10 kt becoming N in the afternoon. Showers likely, mainly after 2pm. Waves 1 ft or less.

      High: 59 °F

      N 10kt
      < 1ft

    • Sunday Night

      Sunday Night:N wind around 12 kt, with gusts as high as 18 kt. Rain showers likely, possibly mixing with snow after 11pm, then gradually ending. Waves 1 ft or less.

      Low: 32 °F

      N 12kt
      < 1ft

    • Monday

      Monday:NNW wind 8 to 10 kt. Partly sunny. Waves 1 ft or less.

      High: 42 °F

      NNW 10kt
      < 1ft

    • Monday Night

      Monday Night:N wind around 6 kt becoming E after midnight. Mostly clear. Waves 1 ft or less.

      Low: 29 °F

      N 6kt
      < 1ft

    • Tuesday

      Tuesday:SSW wind 5 to 10 kt. Partly sunny. Waves 1 ft or less.

      High: 48 °F

      SSW 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:S wind around 7 kt becoming ESE after midnight. Mostly cloudy. Waves 1 ft or less.

      Low: 35 °F

      S 7kt
      < 1ft

    • Wednesday

      Wednesday:ENE wind around 9 kt becoming ESE in the afternoon. Partly sunny. Waves 1 ft or less.

      High: 48 °F

      E 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: 9:50 am EDT Mar 21, 2026
Forecast Valid: 12pm EDT Mar 21, 2026-6pm EDT Mar 27, 2026

View Nearby Observations

Detailed Forecast

This Afternoon
ESE wind around 7 kt. Mostly sunny. Waves 1 ft or less.
Tonight
SE wind 6 to 9 kt becoming WSW after midnight. Partly cloudy. Waves 1 ft or less.
Sunday
W wind 6 to 10 kt becoming N in the afternoon. Showers likely, mainly after 2pm. Waves 1 ft or less.
Sunday Night
N wind around 12 kt, with gusts as high as 18 kt. Rain showers likely, possibly mixing with snow after 11pm, then gradually ending. Waves 1 ft or less.
Monday
NNW wind 8 to 10 kt. Partly sunny. Waves 1 ft or less.
Monday Night
N wind around 6 kt becoming E after midnight. Mostly clear. Waves 1 ft or less.
Tuesday
SSW wind 5 to 10 kt. Partly sunny. Waves 1 ft or less.
Tuesday Night
S wind around 7 kt becoming ESE after midnight. Mostly cloudy. Waves 1 ft or less.
Wednesday
ENE wind around 9 kt becoming ESE in the afternoon. Partly sunny. Waves 1 ft or less.

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

The water temperature at Belle Isle is 36 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: 9:50 am EDT Mar 21, 2026
Forecast Valid: 12pm EDT Mar 21, 2026-6pm EDT Mar 27, 2026
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