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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: 6:35 am EST Nov 20, 2025
Forecast Valid: 7am EST Nov 20, 2025-6pm EST Nov 26, 2025

Today

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Cloudy. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. Cloudy. Waves 1 ft or less.

Friday

SW wind 5 to 7 kt becoming WNW in the afternoon. Mostly cloudy. Waves 1 ft or less.

Friday Night

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

Saturday

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

Saturday Night

Variable winds less than 5 kt becoming SW around 6 kt after midnight. Partly cloudy. Waves 1 ft or less.

Sunday

SW wind 8 to 10 kt. Sunny. Waves 1 ft or less.

Sunday Night

W wind 6 to 9 kt. Mostly clear. Waves 1 ft or less.

Monday

WSW wind 5 to 8 kt becoming SSE in the afternoon. Mostly sunny. Waves 1 ft or less.

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

The water temperature at Belle Isle is 42 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.