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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 66 °F
N 10kt
< 1ft
Tuesday
High: 85 °F
NNE 7kt
< 1ft
Tuesday Night
Low: 68 °F
Light Wind
< 1ft
Wednesday
High: 87 °F
Light Wind
< 1ft
Wednesday Night
Low: 70 °F
SSW 6kt⇓
< 1ft
Thursday
High: 88 °F
WSW 10kt
< 1ft
Thursday Night
Low: 69 °F
W 8kt
< 1ft
Friday
High: 83 °F
WNW 6kt
< 1ft
Friday Night
Low: 66 °F
NE 8kt
< 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 Jul 6, 2026
Forecast Valid: 6pm EDT Jul 6, 2026-6pm EDT Jul 13, 2026

View Nearby Observations

Detailed Forecast

Tonight

N wind 6 to 10 kt. Mostly clear. Waves 1 ft or less.

Tuesday

N wind around 7 kt becoming ENE in the afternoon. Mostly sunny. Waves 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

Wednesday

Variable winds 5 kt or less. Partly sunny, then gradually becoming sunny. Waves 1 ft or less.

Wednesday Night

SSW wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

Thursday

WSW wind 5 to 10 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Thursday Night

W wind 6 to 8 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Waves 1 ft or less.

Friday

WNW wind around 6 kt. A chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Friday Night

NE wind 5 to 8 kt. A chance of thunderstorms before 8pm. 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.