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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 Aug 13, 2026
Forecast Valid: 11pm EDT Aug 13, 2026-6pm EDT Aug 20, 2026

Overnight

Variable winds 5 kt or less. A slight chance of showers after 5am. Waves 1 ft or less.

Friday

E wind 5 to 8 kt. A chance of showers, mainly before 7am. Waves 1 ft or less.

Friday Night

ESE wind around 7 kt becoming NE after midnight. Partly cloudy. Waves 1 ft or less.

Saturday

ESE wind 7 to 10 kt. A chance of showers. Waves 1 ft or less.

Saturday Night

E wind around 9 kt becoming S after midnight. Showers likely and possibly a thunderstorm. Waves 1 ft or less.

Sunday

W wind 10 to 13 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Sunday Night

NW wind around 8 kt. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.

Monday

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

Monday Night

Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

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

The water temperature at Belle Isle is 77 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.