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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 67 °F
SSW 10kt
< 1ft
Tuesday
High: 82 °F
SW 15kt
< 1ft
Tuesday Night
Low: 62 °F
W 11kt⇓
< 1ft
Wednesday
High: 70 °F
⇑NNE 7kt
< 1ft
Wednesday Night
Low: 52 °F
NE 8kt
< 1ft
Thursday
High: 65 °F
E 9kt
< 1ft
Thursday Night
Low: 53 °F
E 8kt⇓
< 1ft
Friday
High: 63 °F
WNW 19kt
< 1ft
Friday Night
Low: 40 °F
NW 18kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:24 pm EDT Oct 12, 2026
Forecast Valid: 10pm EDT Oct 12, 2026-6pm EDT Oct 19, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind around 10 kt. Isolated showers, then scattered showers and thunderstorms after 11pm. Waves 1 ft or less.

Tuesday

SW wind 11 to 15 kt, with gusts as high as 24 kt. Partly sunny, then gradually becoming sunny. Waves 1 ft or less.

Tuesday Night

W wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Winds could gust as high as 18 kt. A chance of rain after 3am. Waves 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming NNE 5 to 7 kt in the morning. A chance of rain before 2pm. Waves 1 ft or less.

Wednesday Night

NE wind around 8 kt. Mostly cloudy. Waves 1 ft or less.

Thursday

E wind 7 to 9 kt. A chance of rain after 2pm. Waves 1 ft or less.

Thursday Night

E wind 5 to 8 kt becoming variable and less than 5 kt. Rain, mainly between 8pm and 2am. Waves 1 ft or less.

Friday

WNW wind 17 to 19 kt, with gusts as high as 30 kt. A chance of rain. Waves 1 ft or less.

Friday Night

NW wind 15 to 18 kt, with gusts as high as 27 kt. Partly cloudy. 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.