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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 85 °F
SSW 8kt
< 1ft
Tonight
Low: 70 °F
Light Wind
< 1ft
Friday
High: 85 °F
SSW 8kt
< 1ft
Friday Night
Low: 70 °F
SW 8kt
< 1ft
Saturday
High: 87 °F
WSW 10kt
< 1ft
Saturday Night
Low: 67 °F
NW 9kt
< 1ft
Sunday
High: 85 °F
⇑SSW 10kt
< 1ft
Sunday Night
Low: 70 °F
WSW 10kt
< 1ft
Monday
High: 85 °F
SW 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: 10:14 am EDT Aug 6, 2026
Forecast Valid: 12pm EDT Aug 6, 2026-6pm EDT Aug 12, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind 6 to 8 kt. Isolated showers between 4pm and 5pm, then scattered showers and thunderstorms after 5pm. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. Scattered showers and thunderstorms before midnight, then scattered showers between midnight and 5am, then scattered showers and thunderstorms after 5am. Waves 1 ft or less.

Friday

SSW wind 5 to 8 kt. Showers and thunderstorms likely, mainly before 4pm. Waves 1 ft or less.

Friday Night

SW wind 6 to 8 kt. A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Waves 1 ft or less.

Saturday

WSW wind 7 to 10 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Saturday Night

NW wind 5 to 9 kt. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.

Sunday

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

Sunday Night

WSW wind 5 to 10 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Waves 1 ft or less.

Monday

SW wind 5 to 11 kt, with gusts as high as 18 kt. Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. 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.