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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 83 °F
S 13kt
< 1ft
Tonight
Low: 68 °F
SSW 8kt⇓
< 1ft
Wednesday
High: 76 °F
NE 8kt
< 1ft
Wednesday Night
Low: 64 °F
NE 7kt⇓
< 1ft
Thursday
High: 79 °F
NW 7kt
< 1ft
Thursday Night
Low: 62 °F
NNE 7kt
< 1ft
Friday
High: 75 °F
NE 9kt
< 1ft
Friday Night
Low: 61 °F
ENE 9kt
< 1ft
Saturday
High: 77 °F
S 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: 4:24 am EDT Sep 15, 2026
Forecast Valid: 9am EDT Sep 15, 2026-6pm EDT Sep 21, 2026

View Nearby Observations

Detailed Forecast

Today

S wind 10 to 13 kt, with gusts as high as 20 kt. Partly sunny. Waves 1 ft or less.

Tonight

SSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 3am, then a chance of showers and thunderstorms after 3am. Waves 1 ft or less.

Wednesday

NE wind 6 to 8 kt. A chance of showers before 2pm. 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

N wind 5 to 7 kt becoming WNW in the morning. Showers likely, mainly between 8am and 2pm. Waves 1 ft or less.

Thursday Night

NNE wind around 7 kt. Mostly cloudy. Waves 1 ft or less.

Friday

NE wind around 9 kt. Partly sunny. Waves 1 ft or less.

Friday Night

ENE wind 6 to 9 kt. Mostly cloudy. Waves 1 ft or less.

Saturday

ESE wind 8 to 11 kt becoming S 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.