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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 Aug 19, 2026
Forecast Valid: 7am EDT Aug 19, 2026-6pm EDT Aug 25, 2026

Today

WSW wind 5 to 9 kt becoming WNW in the morning. A slight chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Waves 1 ft or less.

Thursday

NNE wind 5 to 8 kt becoming E in the afternoon. Mostly sunny. Waves 1 ft or less.

Thursday Night

E wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly clear. Waves 1 ft or less.

Friday

Variable winds less than 5 kt becoming SE 5 to 8 kt in the morning. Mostly sunny. Waves 1 ft or less.

Friday Night

SE wind around 6 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.

Saturday

W wind 6 to 10 kt. Showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Saturday Night

WNW wind around 8 kt. Showers likely and possibly a thunderstorm before 8pm. Waves 1 ft or less.

Sunday

WNW wind 9 to 11 kt. Sunny. Waves 1 ft or less.

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

The water temperature at Belle Isle is 76 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.