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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: 9:13 am EDT Apr 23, 2026
Forecast Valid: 1pm EDT Apr 23, 2026-6pm EDT Apr 29, 2026

This Afternoon

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

Tonight

ESE wind around 6 kt becoming variable and less than 5 kt after midnight. Isolated showers between 7pm and 8pm. Waves 1 ft or less.

Friday

SE wind 5 to 10 kt. Showers likely and possibly a thunderstorm, mainly after 5pm. Waves 1 ft or less.

Friday Night

ESE wind 6 to 8 kt becoming W after midnight. Showers and possibly a thunderstorm. Waves 1 ft or less.

Saturday

WNW wind around 10 kt. A chance of showers before 8am. Waves 1 ft or less.

Saturday Night

NE wind 6 to 9 kt. Partly cloudy. Waves 1 ft or less.

Sunday

NNE wind 7 to 9 kt becoming E in the afternoon. Mostly sunny. Waves 1 ft or less.

Sunday Night

E wind around 9 kt. Mostly cloudy. Waves 1 ft or less.

Monday

E wind 11 to 17 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 50 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.