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Detroit/Pontiac, MI Local Forecast Office

4NM S Monroe MI

Marine Point Forecast

[NOTICE]

Today
High: 70 °F
SW 17kt
< 1ft
Tonight
Low: 47 °F
W 9kt
< 1ft
Sunday
High: 60 °F
W 8kt
< 1ft
Sunday Night
Low: 42 °F
NNW 10kt
< 1ft
Monday
High: 55 °F
N 8kt
< 1ft
Monday Night
Low: 42 °F
Light Wind
< 1ft
Tuesday
High: 60 °F
⇑S 9kt
< 1ft
Tuesday Night
Low: 50 °F
S 17kt
< 1ft
Wednesday
High: 62 °F
WNW 17kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 10:13 am EDT May 9, 2026
Forecast Valid: 10am EDT May 9, 2026-6pm EDT May 15, 2026

View Nearby Observations

Detailed Forecast

Today

SW wind 10 to 17 kt, with gusts as high as 26 kt. A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Waves 1 ft or less.

Tonight

W wind 6 to 9 kt becoming NNW after midnight. A chance of showers and thunderstorms, mainly between 7pm and 8pm. Waves 1 ft or less.

Sunday

N wind 5 to 8 kt becoming W in the afternoon. Sunny. Waves 1 ft or less.

Sunday Night

NNW wind 7 to 10 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.

Monday

N wind 6 to 8 kt. Sunny. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. A chance of showers after 2pm. Waves 1 ft or less.

Tuesday Night

S wind 12 to 17 kt, with gusts as high as 25 kt. Showers. Waves 1 ft or less.

Wednesday

WNW wind 14 to 17 kt. Showers likely. 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.