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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

Sunday
High: 55 °F
SW 16kt
< 1ft
Sunday Night
Low: 42 °F
SW 13kt
< 1ft
Monday
High: 61 °F
SW 14kt
< 1ft
Monday Night
Low: 49 °F
SSW 9kt
< 1ft
Tuesday
High: 63 °F
SSW 11kt
< 1ft
Tuesday Night
Low: 52 °F
S 13kt
< 1ft
Wednesday
High: 63 °F
SW 16kt
< 1ft
Wednesday Night
Low: 28 °F
WNW 16kt
< 1ft
Thursday
High: 37 °F
WNW 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: 1:36 am EST Mar 8, 2026
Forecast Valid: 3am EDT Mar 8, 2026-6pm EDT Mar 14, 2026

View Nearby Observations

Detailed Forecast

Sunday

SW wind 8 to 16 kt, with gusts as high as 22 kt. Mostly cloudy through mid morning, then gradual clearing. 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. Mostly clear. Waves 1 ft or less.

Tuesday

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

Tuesday Night

S wind around 13 kt, with gusts as high as 21 kt. Rain likely before 11pm, then rain likely and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Waves 1 ft or less.

Wednesday

SW wind 13 to 16 kt, with gusts as high as 23 kt. Rain, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Wednesday Night

WNW wind around 16 kt, with gusts as high as 23 kt. A chance of rain and snow before 2am, then a chance of snow. Some thunder is also possible. Waves 1 ft or less.

Thursday

WNW wind around 16 kt. Partly sunny. 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.