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4NM S Monroe MI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 4:24 pm EDT Apr 30, 2026
Forecast Valid: 6pm EDT Apr 30, 2026-6pm EDT May 7, 2026

Tonight

WNW wind 6 to 11 kt becoming variable and less than 5 kt. Winds could gust as high as 19 kt. Showers likely after 8pm. Waves 1 ft or less.

Friday

NW wind 5 to 7 kt. A chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Friday Night

NW wind around 6 kt becoming N after midnight. A chance of showers before 8pm. Waves 1 ft or less.

Saturday

NW wind around 7 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

W wind around 6 kt. Partly cloudy. Waves 1 ft or less.

Sunday

WSW wind 7 to 14 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

SSW wind 12 to 17 kt, with gusts as high as 24 kt. A chance of showers after 2am. Waves 1 ft or less.

Monday

SW wind 13 to 20 kt. A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Monday Night

SW wind around 18 kt, with gusts as high as 26 kt. A chance of showers and thunderstorms. Waves 1 ft or less.

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

The water temperature at Belle Isle is 51 degrees.

*Notices:

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.
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.