News Headlines

For More Weather Information:

Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 59 °F
SE 10kt
< 1ft
Tuesday
High: 82 °F
S 13kt
< 1ft
Tuesday Night
Low: 68 °F
SW 7kt⇓
< 1ft
Wednesday
High: 76 °F
NE 7kt
< 1ft
Wednesday Night
Low: 65 °F
NE 7kt⇓
< 1ft
Thursday
High: 80 °F
NW 6kt
< 1ft
Thursday Night
Low: 64 °F
NNE 6kt
< 1ft
Friday
High: 76 °F
NE 7kt
< 1ft
Friday Night
Low: 65 °F
E 7kt
< 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 Sep 14, 2026
Forecast Valid: 7pm EDT Sep 14, 2026-6pm EDT Sep 21, 2026

View Nearby Observations

Detailed Forecast

Tonight

SE wind 6 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Tuesday

S wind 11 to 13 kt, with gusts as high as 20 kt. A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Tuesday Night

SW wind 5 to 7 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms. Waves 1 ft or less.

Wednesday

NE wind 5 to 7 kt. Mostly cloudy. Waves 1 ft or less.

Wednesday Night

NE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. A chance of showers after 2am. Waves 1 ft or less.

Thursday

NNW wind around 6 kt becoming W in the afternoon. Showers likely, mainly between 8am and 2pm. Waves 1 ft or less.

Thursday Night

NNE wind around 6 kt. Mostly cloudy. Waves 1 ft or less.

Friday

NE wind around 7 kt. Partly sunny. Waves 1 ft or less.

Friday Night

E wind 5 to 7 kt. 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.