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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 am EDT Apr 22, 2026
Forecast Valid: 7am EDT Apr 22, 2026-6pm EDT Apr 28, 2026

Today

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

Tonight

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

Thursday

E wind 5 to 8 kt. Mostly sunny. Waves 1 ft or less.

Thursday Night

ESE wind 5 to 7 kt. Partly cloudy. Waves 1 ft or less.

Friday

SSE wind 5 to 11 kt. A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Waves 1 ft or less.

Friday Night

ESE wind 7 to 9 kt becoming NNE after midnight. Showers and thunderstorms likely. Waves 1 ft or less.

Saturday

NNW wind 9 to 11 kt. A chance of showers before 8am. Waves 1 ft or less.

Saturday Night

NNE wind 7 to 9 kt. Partly cloudy. Waves 1 ft or less.

Sunday

NNE wind around 9 kt becoming E 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 48 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.