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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Monday
High: 37 °F
WSW 13kt
< 1ft
Monday Night
Low: 29 °F
WSW 10kt
< 1ft
Tuesday
High: 42 °F
SSW 14kt
< 1ft
Tuesday Night
Low: 34 °F
WSW 13kt
< 1ft
Wednesday
High: 39 °F
NNW 12kt
< 1ft
Wednesday Night
Low: 16 °F
N 15kt
< 1ft
Thursday
High: 24 °F
NNW 14kt
< 1ft
Thursday Night
Low: 16 °F
NNW 8kt
< 1ft
Friday
High: 29 °F
SSW 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: 3:35 am EST Jan 12, 2026
Forecast Valid: 3am EST Jan 12, 2026-6pm EST Jan 18, 2026

View Nearby Observations

Detailed Forecast

Monday

WSW wind around 13 kt, with gusts as high as 23 kt. Sunny. Waves 1 ft or less.

Monday Night

WSW wind 8 to 10 kt. Mostly clear. Waves 1 ft or less.

Tuesday

SSW wind 10 to 14 kt, with gusts as high as 23 kt. A chance of rain after 1pm. Waves 1 ft or less.

Tuesday Night

WSW wind 9 to 13 kt, with gusts as high as 22 kt. Mostly cloudy. Waves 1 ft or less.

Wednesday

WSW wind 9 to 12 kt becoming NNW in the afternoon. Winds could gust as high as 18 kt. A chance of rain before 1pm, then rain and snow between 1pm and 4pm, then snow after 4pm. Waves 1 ft or less.

Wednesday Night

N wind around 15 kt, with gusts as high as 22 kt. A chance of snow. Waves 1 ft or less.

Thursday

NNW wind 10 to 14 kt, with gusts as high as 21 kt. Partly sunny. Waves 1 ft or less.

Thursday Night

NNW wind around 8 kt becoming WSW after midnight. Mostly cloudy. Waves 1 ft or less.

Friday

SSW wind 9 to 11 kt. A chance of snow. 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.