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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 76 °F
SSW 14kt
< 1ft
Tonight
Low: 57 °F
SW 10kt
< 1ft
Wednesday
High: 75 °F
WSW 11kt
< 1ft
Wednesday Night
Low: 63 °F
S 19kt
< 1ft
Thursday
High: 74 °F
W 19kt
< 1ft
Thursday Night
Low: 58 °F
W 12kt
< 1ft
Juneteenth
High: 75 °F
W 13kt
< 1ft
Friday Night
Low: 57 °F
WNW 12kt
< 1ft
Saturday
High: 76 °F
WNW 12kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 11:35 am EDT Jun 16, 2026
Forecast Valid: 2pm EDT Jun 16, 2026-6pm EDT Jun 22, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind around 14 kt, with gusts as high as 21 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5pm. Waves 1 ft or less.

Tonight

SW wind 8 to 10 kt. Showers and thunderstorms, mainly before midnight. Waves 1 ft or less.

Wednesday

WSW wind 9 to 11 kt. Showers likely, mainly after 5pm. Waves 1 ft or less.

Wednesday Night

SSE wind 13 to 19 kt becoming SW after midnight. Winds could gust as high as 28 kt. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Waves 1 ft or less.

Thursday

W wind 17 to 19 kt, with gusts as high as 27 kt. Showers likely before 8am. Waves 1 ft or less.

Thursday Night

W wind 8 to 12 kt. Mostly clear. Waves 1 ft or less.

Juneteenth

W wind 8 to 13 kt, with gusts as high as 21 kt. Sunny. Waves 1 ft or less.

Friday Night

WNW wind 7 to 12 kt, with gusts as high as 18 kt. Mostly clear. Waves 1 ft or less.

Saturday

WNW wind 7 to 12 kt. Sunny. 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.