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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 75 °F
SW 10kt
< 1ft
Tonight
Low: 63 °F
S 19kt
< 1ft
Thursday
High: 72 °F
WSW 16kt
< 1ft
Thursday Night
Low: 57 °F
W 11kt
< 1ft
Juneteenth
High: 75 °F
W 13kt
< 1ft
Friday Night
Low: 57 °F
WNW 12kt
< 1ft
Saturday
High: 77 °F
W 11kt
< 1ft
Saturday Night
Low: 59 °F
WNW 9kt⇓
< 1ft
Sunday
High: 75 °F
⇑SE 6kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:24 am EDT Jun 17, 2026
Forecast Valid: 8am EDT Jun 17, 2026-6pm EDT Jun 23, 2026

View Nearby Observations

Detailed Forecast

Today

SW wind 8 to 10 kt. A chance of showers, with thunderstorms also possible after 5pm. Waves 1 ft or less.

Tonight

SE wind 14 to 19 kt becoming SW after midnight. Winds could gust as high as 31 kt. Showers and thunderstorms before 2am, then a chance of showers. Some of the storms could produce heavy rainfall. Waves 1 ft or less.

Thursday

WSW wind around 16 kt, with gusts as high as 26 kt. A chance of showers before 9am. Waves 1 ft or less.

Thursday Night

W wind 8 to 11 kt. Mostly clear. Waves 1 ft or less.

Juneteenth

W wind 8 to 13 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.

Friday Night

WNW wind 7 to 12 kt. Mostly clear. Waves 1 ft or less.

Saturday

W wind 6 to 11 kt. Sunny. Waves 1 ft or less.

Saturday Night

WNW wind 5 to 9 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming SE around 6 kt in the afternoon. A chance of showers. 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.