News Headlines

For More Weather Information:

Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 55 °F
WSW 7kt
< 1ft
Sunday
High: 73 °F
⇑S 6kt
< 1ft
Sunday Night
Low: 58 °F
Light Wind
< 1ft
Memorial Day
High: 78 °F
Light Wind
< 1ft
Monday Night
Low: 60 °F
Light Wind
< 1ft
Tuesday
High: 81 °F
⇑S 6kt
< 1ft
Tuesday Night
Low: 64 °F
Light Wind
< 1ft
Wednesday
High: 82 °F
Light Wind
< 1ft
Wednesday Night
Low: 62 °F
SSE 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 pm EDT May 23, 2026
Forecast Valid: 7pm EDT May 23, 2026-6pm EDT May 30, 2026

View Nearby Observations

Detailed Forecast

Tonight

WSW wind 5 to 7 kt. Patchy fog before 11pm, then Patchy fog after 1am. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. A chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Waves 1 ft or less.

Sunday Night

Variable winds 5 kt or less. A chance of showers before 8pm. Waves 1 ft or less.

Memorial Day

Variable winds 5 kt or less. Mostly cloudy, then gradually becoming sunny. Waves 1 ft or less.

Monday Night

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

Tuesday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Partly sunny. Waves 1 ft or less.

Tuesday Night

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

Wednesday

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

Wednesday Night

SSE wind around 6 kt becoming NNE after midnight. Mostly cloudy. 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.