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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 75 °F
ENE 7kt
< 1ft
Tonight
Low: 68 °F
NE 8kt
< 1ft
Monday
High: 81 °F
NE 10kt
< 1ft
Monday Night
Low: 66 °F
NNE 9kt
< 1ft
Tuesday
High: 84 °F
NNE 7kt
< 1ft
Tuesday Night
Low: 67 °F
Light Wind
< 1ft
Wednesday
High: 87 °F
⇑SSW 7kt
< 1ft
Wednesday Night
Low: 69 °F
SSW 7kt⇓
< 1ft
Thursday
High: 87 °F
WSW 11kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:24 pm EDT Jul 5, 2026
Forecast Valid: 4pm EDT Jul 5, 2026-6pm EDT Jul 11, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ENE wind around 7 kt. Scattered showers and thunderstorms. Waves 1 ft or less.

Tonight

NE wind around 8 kt. Scattered showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 4am, then scattered showers and thunderstorms after 4am. Waves 1 ft or less.

Monday

NE wind 8 to 10 kt. Scattered showers before 9am. Waves 1 ft or less.

Monday Night

NNE wind 6 to 9 kt. Mostly clear. Waves 1 ft or less.

Tuesday

NNE wind around 7 kt. Mostly sunny. Waves 1 ft or less.

Tuesday Night

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

Wednesday

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Sunny. Waves 1 ft or less.

Wednesday Night

SSW wind 5 to 7 kt becoming variable and less than 5 kt. Mostly clear. Waves 1 ft or less.

Thursday

WSW wind 6 to 11 kt. A chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

*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.