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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tuesday
High: 88 °F
SW 17kt
< 1ft
Tuesday Night
Low: 57 °F
WSW 13kt
< 1ft
Wednesday
High: 65 °F
N 10kt
< 1ft
Wednesday Night
Low: 43 °F
NE 10kt
< 1ft
Thursday
High: 62 °F
ENE 9kt
< 1ft
Thursday Night
Low: 49 °F
ENE 10kt
< 1ft
Friday
High: 66 °F
E 14kt
< 1ft
Friday Night
Low: 55 °F
E 15kt
< 1ft
Saturday
High: 71 °F
E 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: 10:13 pm EDT May 18, 2026
Forecast Valid: 2am EDT May 19, 2026-6pm EDT May 25, 2026

View Nearby Observations

Detailed Forecast

Tuesday

SW wind 11 to 17 kt, with gusts as high as 26 kt. A chance of showers and thunderstorms, mainly after 3pm. Waves 1 ft or less.

Tuesday Night

WSW wind 10 to 13 kt becoming NW after midnight. Winds could gust as high as 21 kt. Showers and thunderstorms before 2am, then a chance of showers. Waves 1 ft or less.

Wednesday

N wind 8 to 10 kt. Mostly sunny. Waves 1 ft or less.

Wednesday Night

NE wind around 10 kt. Mostly cloudy. Waves 1 ft or less.

Thursday

ENE wind around 9 kt. Mostly sunny. Waves 1 ft or less.

Thursday Night

ENE wind around 10 kt. Partly cloudy. Waves 1 ft or less.

Friday

E wind 11 to 14 kt, with gusts as high as 20 kt. A chance of showers after 2pm. Waves 1 ft or less.

Friday Night

E wind 13 to 15 kt, with gusts as high as 22 kt. Showers likely. Waves 1 ft or less.

Saturday

E wind around 11 kt becoming SE in the afternoon. 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.