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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 73 °F
SSW 14kt
< 1ft
Tonight
Low: 59 °F
SSW 15kt
< 1ft
Monday
High: 71 °F
WSW 16kt
< 1ft
Monday Night
Low: 60 °F
SSW 11kt
< 1ft
Tuesday
High: 73 °F
WSW 16kt
< 1ft
Tuesday Night
Low: 60 °F
SW 11kt
< 1ft
Wednesday
High: 70 °F
SW 13kt
< 1ft
Wednesday Night
Low: 59 °F
SSW 10kt
< 1ft
Thursday
High: 71 °F
SW 14kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 10:14 am EDT Apr 12, 2026
Forecast Valid: 2pm EDT Apr 12, 2026-6pm EDT Apr 18, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind around 14 kt, with gusts as high as 23 kt. Partly sunny. Waves 1 ft or less.

Tonight

SSW wind 13 to 15 kt, with gusts as high as 26 kt. Showers likely, mainly after 4am. Waves 1 ft or less.

Monday

WSW wind around 16 kt, with gusts as high as 22 kt. A chance of showers before 2pm. Waves 1 ft or less.

Monday Night

SSW wind 9 to 11 kt, with gusts as high as 18 kt. A chance of showers after 8pm. Waves 1 ft or less.

Tuesday

WSW wind 13 to 16 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Tuesday Night

SW wind 9 to 11 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Waves 1 ft or less.

Wednesday

SW wind 9 to 13 kt. Showers likely, mainly after 2pm. Waves 1 ft or less.

Wednesday Night

SSW wind around 10 kt. Showers likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Waves 1 ft or less.

Thursday

SW wind 11 to 14 kt. A chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

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

The water temperature at Belle Isle is 46 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.