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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 May 21, 2026
Forecast Valid: 10pm EDT May 21, 2026-6pm EDT May 28, 2026

Tonight

ENE wind around 15 kt. Partly cloudy. Waves 1 ft or less.

Friday

E wind 18 to 20 kt, with gusts as high as 26 kt. Partly sunny. Waves 1 ft or less.

Friday Night

E wind 17 to 20 kt, with gusts as high as 27 kt. Showers, mainly after 1am. Waves 1 ft or less.

Saturday

E wind 14 to 17 kt, with gusts as high as 23 kt. Showers. Waves 1 ft or less.

Saturday Night

ENE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Showers likely before 8pm. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming SW around 6 kt in the afternoon. A chance of showers after 2pm. Waves 1 ft or less.

Sunday Night

Variable winds 5 kt or less. A chance of showers before 2am. Waves 1 ft or less.

Memorial Day

Variable winds less than 5 kt becoming ESE around 6 kt in the afternoon. Partly sunny. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. 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 missing.

*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.