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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: 9:49 am EDT Sep 25, 2026
Forecast Valid: 11am EDT Sep 25, 2026-6pm EDT Oct 1, 2026

Today

ENE wind around 9 kt. Partly sunny. Waves 1 ft or less.

Tonight

ENE wind around 7 kt becoming N after midnight. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.

Saturday

NE wind 6 to 8 kt. Sunny. Waves 1 ft or less.

Saturday Night

N wind around 6 kt. Mostly clear. Waves 1 ft or less.

Sunday

NNE wind around 7 kt. Sunny. Waves 1 ft or less.

Sunday Night

N wind around 6 kt. Mostly clear. Waves 1 ft or less.

Monday

N wind around 6 kt becoming variable and less than 5 kt in the afternoon. Sunny. Waves 1 ft or less.

Monday Night

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

Tuesday

Variable winds less than 5 kt becoming SSE 5 to 7 kt in the afternoon. Sunny. Waves 1 ft or less.

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

The water temperature at Belle Isle is 60 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.