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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 77 °F
WSW 14kt
< 1ft
Tonight
Low: 58 °F
W 9kt⇓
< 1ft
Sunday
High: 76 °F
⇑ESE 9kt
< 1ft
Sunday Night
Low: 62 °F
ESE 8kt
< 1ft
Monday
High: 83 °F
SSW 17kt
< 1ft
Monday Night
Low: 67 °F
SSW 14kt
< 1ft
Tuesday
High: 86 °F
SW 20kt
< 1ft
Tuesday Night
Low: 61 °F
SW 16kt
< 1ft
Wednesday
High: 70 °F
WNW 13kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:49 am EDT May 16, 2026
Forecast Valid: 2pm EDT May 16, 2026-6pm EDT May 22, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

WSW wind around 14 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Waves 1 ft or less.

Tonight

W wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 7pm, then a slight chance of showers after 4am. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming ESE 5 to 9 kt in the afternoon. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Sunday Night

ESE wind around 8 kt becoming S after midnight. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.

Monday

SSW wind 10 to 17 kt, with gusts as high as 23 kt. Sunny. Waves 1 ft or less.

Monday Night

SSW wind 11 to 14 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms after 2am. Waves 1 ft or less.

Tuesday

SW wind 13 to 20 kt, with gusts as high as 26 kt. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Tuesday Night

SW wind 13 to 16 kt, with gusts as high as 22 kt. Showers likely and possibly a thunderstorm. Waves 1 ft or less.

Wednesday

WNW wind around 13 kt. Mostly cloudy. Waves 1 ft or less.

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

The water temperature at Belle Isle is missing.

*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.