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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 60 °F
WSW 17kt
< 1ft
Tonight
Low: 38 °F
W 14kt
< 1ft
Sunday
High: 54 °F
WSW 16kt
< 1ft
Sunday Night
Low: 43 °F
SW 13kt
< 1ft
Monday
High: 60 °F
SW 14kt
< 1ft
Monday Night
Low: 46 °F
SSW 9kt
< 1ft
Tuesday
High: 62 °F
SSW 11kt
< 1ft
Tuesday Night
Low: 50 °F
S 13kt
< 1ft
Wednesday
High: 60 °F
SW 16kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:49 pm EST Mar 7, 2026
Forecast Valid: 4pm EST Mar 7, 2026-6pm EDT Mar 13, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

WSW wind around 17 kt, with gusts as high as 23 kt. A chance of rain and thunderstorms, mainly after 5pm. Waves 1 ft or less.

Tonight

W wind 8 to 14 kt, with gusts as high as 22 kt. Rain likely and possibly a thunderstorm before 7pm, then a slight chance of rain between 7pm and 8pm. Waves 1 ft or less.

Sunday

WSW wind 9 to 16 kt, with gusts as high as 22 kt. Partly sunny, then gradually becoming sunny. Waves 1 ft or less.

Sunday Night

SW wind 10 to 13 kt, with gusts as high as 21 kt. Mostly clear. Waves 1 ft or less.

Monday

SW wind 12 to 14 kt. Sunny. Waves 1 ft or less.

Monday Night

SSW wind around 9 kt. Increasing clouds. Waves 1 ft or less.

Tuesday

SSW wind 8 to 11 kt. Partly sunny. Waves 1 ft or less.

Tuesday Night

SSE wind around 13 kt becoming SSW after midnight. Winds could gust as high as 21 kt. Rain likely and possibly a thunderstorm, then rain after 1am. Waves 1 ft or less.

Wednesday

SW wind 13 to 16 kt, with gusts as high as 23 kt. Rain. Waves 1 ft or less.

Wave heights are for ice free areas.

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

The water temperature at Belle Isle is 33 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.