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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 67 °F
WSW 14kt
< 1ft
Saturday
High: 82 °F
W 13kt
< 1ft
Saturday Night
Low: 63 °F
WNW 7kt⇓
< 1ft
Sunday
High: 78 °F
E 7kt
< 1ft
Sunday Night
Low: 63 °F
E 7kt
< 1ft
Monday
High: 76 °F
E 13kt
< 1ft
Monday Night
Low: 65 °F
E 10kt
< 1ft
Tuesday
High: 81 °F
S 11kt
< 1ft
Tuesday Night
Low: 68 °F
S 7kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:25 pm EDT Jun 5, 2026
Forecast Valid: 7pm EDT Jun 5, 2026-6pm EDT Jun 12, 2026

View Nearby Observations

Detailed Forecast

Tonight

WSW wind around 14 kt, with gusts as high as 21 kt. Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Waves 1 ft or less.

Saturday

W wind around 13 kt. Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Waves 1 ft or less.

Saturday Night

WNW wind 5 to 7 kt becoming variable and less than 5 kt in the evening. A chance of showers before 8pm. Waves 1 ft or less.

Sunday

NNE wind 5 to 7 kt becoming E in the afternoon. Mostly sunny. Waves 1 ft or less.

Sunday Night

E wind around 7 kt. Partly cloudy. Waves 1 ft or less.

Monday

E wind 7 to 13 kt. Partly sunny. Waves 1 ft or less.

Monday Night

E wind 5 to 10 kt becoming SSE after midnight. A chance of showers after 2am. Waves 1 ft or less.

Tuesday

S wind 6 to 11 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Tuesday Night

S wind 5 to 7 kt. Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Waves 1 ft or less.

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

The water temperature at Belle Isle is 68 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.