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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 47 °F
WSW 10kt⇓
< 1ft
Friday
High: 57 °F
W 8kt
< 1ft
Friday Night
Low: 37 °F
NNE 6kt
< 1ft
Saturday
High: 53 °F
Light Wind
< 1ft
Saturday Night
Low: 41 °F
ESE 6kt
< 1ft
Sunday
High: 72 °F
SSW 12kt
< 1ft
Sunday Night
Low: 60 °F
SW 14kt
< 1ft
Monday
High: 74 °F
SW 15kt
< 1ft
Monday Night
Low: 61 °F
SW 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: 4:24 pm EDT Apr 9, 2026
Forecast Valid: 6pm EDT Apr 9, 2026-6pm EDT Apr 16, 2026

View Nearby Observations

Detailed Forecast

Tonight

WSW wind 5 to 10 kt becoming variable and less than 5 kt in the evening. Winds could gust as high as 18 kt. A chance of rain and thunderstorms before 3am, then a slight chance of rain between 3am and 4am. Waves 1 ft or less.

Friday

E wind around 8 kt becoming W in the morning. Rain, mainly before 11am. Waves 1 ft or less.

Friday Night

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

Saturday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Saturday Night

ESE wind around 6 kt. Increasing clouds. Waves 1 ft or less.

Sunday

SE wind 8 to 12 kt becoming SSW in the afternoon. Winds could gust as high as 18 kt. Mostly cloudy. Waves 1 ft or less.

Sunday Night

SW wind 12 to 14 kt, with gusts as high as 24 kt. A chance of rain after 2am. Waves 1 ft or less.

Monday

SW wind around 15 kt, with gusts as high as 24 kt. A chance of rain. Waves 1 ft or less.

Monday Night

SW wind around 10 kt. A chance of rain. 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.