For More Weather Information:

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 Oct 10, 2026
Forecast Valid: 1am EDT Oct 11, 2026-6pm EDT Oct 17, 2026

Sunday

ESE wind 8 to 10 kt becoming NE in the afternoon. Winds could gust as high as 18 kt. Rain likely, mainly before 10am. Waves 1 ft or less.

Sunday Night

Variable winds 5 kt or less. Patchy fog after 2am. Waves 1 ft or less.

Columbus Day

Variable winds less than 5 kt becoming SSW 5 to 8 kt in the morning. Patchy fog before 10am. Waves 1 ft or less.

Monday Night

SW wind around 10 kt, with gusts as high as 19 kt. A chance of rain after 2am. Waves 1 ft or less.

Tuesday

WSW wind 12 to 17 kt. A chance of rain before 2pm. Waves 1 ft or less.

Tuesday Night

NW wind 8 to 11 kt, with gusts as high as 18 kt. Partly cloudy. Waves 1 ft or less.

Wednesday

N wind around 8 kt. Partly sunny. Waves 1 ft or less.

Wednesday Night

NE wind 7 to 10 kt. A chance of rain. Waves 1 ft or less.

Thursday

E wind 10 to 14 kt, with gusts as high as 21 kt. A chance of rain. Waves 1 ft or less.

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

The water temperature at Belle Isle is 61 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.