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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: 8:49 pm EDT Aug 1, 2026
Forecast Valid: 12am EDT Aug 2, 2026-6pm EDT Aug 8, 2026

Overnight

ENE wind 10 to 12 kt. Showers and possibly a thunderstorm. Waves 1 ft or less.

Sunday

NE wind 10 to 13 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Sunday Night

N wind 10 to 13 kt. A chance of thunderstorms before 8pm. Waves 1 ft or less.

Monday

NE wind around 11 kt. Cloudy through mid morning, then gradual clearing. Waves 1 ft or less.

Monday Night

NNE wind 5 to 8 kt. Mostly clear. Waves 1 ft or less.

Tuesday

N wind around 7 kt becoming E in the afternoon. Sunny. Waves 1 ft or less.

Tuesday Night

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

Wednesday

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

Wednesday Night

SSW wind around 6 kt becoming W after midnight. Partly cloudy. Waves 1 ft or less.

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

The water temperature at Belle Isle is 77 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.