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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 Mar 20, 2026
Forecast Valid: 7pm EDT Mar 20, 2026-6pm EDT Mar 27, 2026

Tonight

NNW wind 5 to 10 kt becoming NNE after midnight. Mostly cloudy. Waves 1 ft or less.

Saturday

Variable winds less than 5 kt becoming ESE 5 to 8 kt in the morning. Partly sunny. Waves 1 ft or less.

Saturday Night

ESE wind 6 to 9 kt becoming SW after midnight. Mostly cloudy. Waves 1 ft or less.

Sunday

WSW wind 8 to 11 kt becoming N in the afternoon. A chance of rain after 2pm. Waves 1 ft or less.

Sunday Night

N wind 11 to 13 kt. A chance of rain before 2am. Waves 1 ft or less.

Monday

NNW wind around 11 kt. Partly sunny. Waves 1 ft or less.

Monday Night

NNW wind 5 to 8 kt becoming ENE after midnight. Partly cloudy. Waves 1 ft or less.

Tuesday

SSE wind 5 to 11 kt becoming SSW in the afternoon. Partly sunny. Waves 1 ft or less.

Tuesday Night

W wind around 9 kt becoming NNW after midnight. Mostly cloudy. Waves 1 ft or less.

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

The water temperature at Belle Isle is 35 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.