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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 Apr 21, 2026
Forecast Valid: 5pm EDT Apr 21, 2026-6pm EDT Apr 28, 2026

This Afternoon

SW wind around 13 kt. Partly sunny. Waves 1 ft or less.

Tonight

WSW wind 6 to 9 kt. Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 1am. Waves 1 ft or less.

Wednesday

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

Wednesday Night

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

Thursday

ESE wind 5 to 7 kt. Mostly sunny. Waves 1 ft or less.

Thursday Night

ESE wind around 6 kt. Partly cloudy. Waves 1 ft or less.

Friday

ESE wind 6 to 11 kt. A chance of showers after 2pm. Waves 1 ft or less.

Friday Night

E wind 7 to 9 kt becoming NE after midnight. Showers likely. Waves 1 ft or less.

Saturday

N wind 7 to 11 kt. A chance of showers. Waves 1 ft or less.

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

The water temperature at Belle Isle is 47 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.