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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 79 °F
WSW 12kt
< 1ft
Tonight
Low: 59 °F
WSW 8kt
< 1ft
Sunday
High: 79 °F
⇑SSE 8kt
< 1ft
Sunday Night
Low: 65 °F
SE 8kt
< 1ft
Monday
High: 88 °F
SSW 16kt
< 1ft
Monday Night
Low: 69 °F
SSW 14kt
< 1ft
Tuesday
High: 88 °F
SSW 18kt
< 1ft
Tuesday Night
Low: 62 °F
SW 15kt
< 1ft
Wednesday
High: 70 °F
NW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:24 pm EDT May 16, 2026
Forecast Valid: 4pm EDT May 16, 2026-6pm EDT May 22, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

WSW wind around 12 kt, with gusts as high as 18 kt. A slight chance of showers and thunderstorms before 5pm. Waves 1 ft or less.

Tonight

WSW wind 5 to 8 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming SSE 5 to 8 kt in the afternoon. A chance of showers and thunderstorms after 5pm. Waves 1 ft or less.

Sunday Night

SE wind around 8 kt becoming S after midnight. A chance of showers and thunderstorms before 7pm. Waves 1 ft or less.

Monday

SSW wind 9 to 16 kt, with gusts as high as 24 kt. Sunny. Waves 1 ft or less.

Monday Night

SSW wind 10 to 14 kt, with gusts as high as 22 kt. Showers likely, mainly after 2am. Waves 1 ft or less.

Tuesday

SSW wind 12 to 18 kt, with gusts as high as 26 kt. Showers likely, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Tuesday Night

SW wind 12 to 15 kt, with gusts as high as 23 kt. Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Waves 1 ft or less.

Wednesday

NW wind around 10 kt. 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.