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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 55 °F
SSW 10kt
< 1ft
Tonight
Low: 46 °F
SSW 9kt
< 1ft
Monday
High: 65 °F
SW 10kt
< 1ft
Monday Night
Low: 56 °F
SSW 11kt
< 1ft
Tuesday
High: 70 °F
SW 16kt
< 1ft
Tuesday Night
Low: 42 °F
SW 13kt
< 1ft
Wednesday
High: 49 °F
NNW 11kt
< 1ft
Wednesday Night
Low: 32 °F
NE 11kt
< 1ft
Thursday
High: 50 °F
ENE 14kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:25 am EDT Mar 29, 2026
Forecast Valid: 2pm EDT Mar 29, 2026-6pm EDT Apr 4, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind around 10 kt. Partly sunny. Waves 1 ft or less.

Tonight

SSW wind around 9 kt. Increasing clouds. Waves 1 ft or less.

Monday

SW wind 8 to 10 kt. Partly sunny. Waves 1 ft or less.

Monday Night

SSW wind 9 to 11 kt, with gusts as high as 19 kt. A chance of rain, with thunderstorms also possible after 2am. Waves 1 ft or less.

Tuesday

SW wind 12 to 16 kt, with gusts as high as 24 kt. A chance of rain and thunderstorms before 2pm, then rain likely between 2pm and 5pm, then rain likely and possibly a thunderstorm after 5pm. Waves 1 ft or less.

Tuesday Night

SW wind 11 to 13 kt becoming WNW after midnight. Winds could gust as high as 22 kt. Rain and possibly a thunderstorm. Waves 1 ft or less.

Wednesday

NNW wind around 11 kt. Rain likely, mainly before 8am. Waves 1 ft or less.

Wednesday Night

NE wind around 11 kt. A chance of rain before 2am, then a chance of rain and snow. Waves 1 ft or less.

Thursday

ENE wind 11 to 14 kt, with gusts as high as 22 kt. A chance of rain and snow before 8am, then rain likely. 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.