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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 72 °F
W 16kt
< 1ft
Tonight
Low: 57 °F
W 12kt
< 1ft
Juneteenth
High: 76 °F
WNW 13kt
< 1ft
Friday Night
Low: 57 °F
WNW 11kt
< 1ft
Saturday
High: 77 °F
⇑W 10kt
< 1ft
Saturday Night
Low: 58 °F
WNW 9kt⇓
< 1ft
Sunday
High: 76 °F
Light Wind
< 1ft
Sunday Night
Low: 60 °F
E 11kt
< 1ft
Monday
High: 74 °F
ENE 13kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:25 pm EDT Jun 18, 2026
Forecast Valid: 5pm EDT Jun 18, 2026-6pm EDT Jun 25, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

W wind around 16 kt, with gusts as high as 25 kt. Partly sunny. Waves 1 ft or less.

Tonight

W wind 6 to 12 kt. Mostly clear. Waves 1 ft or less.

Juneteenth

WNW wind 7 to 13 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.

Friday Night

WNW wind 6 to 11 kt. Mostly clear. Waves 1 ft or less.

Saturday

Variable winds less than 5 kt becoming W 5 to 10 kt in the morning. A chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers after 5pm. Waves 1 ft or less.

Saturday Night

WNW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A chance of showers before 8pm. Waves 1 ft or less.

Sunday

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

Sunday Night

SSE wind 7 to 11 kt becoming E after midnight. Showers. Waves 1 ft or less.

Monday

ENE wind around 13 kt, with gusts as high as 20 kt. 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.