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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Sunday
High: 84 °F
⇑WSW 10kt
< 1ft
Sunday Night
Low: 72 °F
W 8kt
< 1ft
Monday
High: 81 °F
NNW 8kt
< 1ft
Monday Night
Low: 69 °F
Light Wind
< 1ft
Tuesday
High: 83 °F
⇑SW 10kt
< 1ft
Tuesday Night
Low: 63 °F
WSW 10kt
< 1ft
Wednesday
High: 77 °F
WNW 9kt
< 1ft
Wednesday Night
Low: 67 °F
NNW 8kt
< 1ft
Thursday
High: 77 °F
N 7kt
< 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 pm EDT Aug 15, 2026
Forecast Valid: 1am EDT Aug 16, 2026-6pm EDT Aug 22, 2026

View Nearby Observations

Detailed Forecast

Sunday

Variable winds less than 5 kt becoming WSW 5 to 10 kt in the morning. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. Waves 1 ft or less.

Sunday Night

W wind around 8 kt. A chance of showers and thunderstorms before 9pm, then a slight chance of showers after 3am. Waves 1 ft or less.

Monday

NNW wind around 8 kt. Mostly cloudy, then gradually becoming sunny. Waves 1 ft or less.

Monday Night

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

Tuesday

Variable winds less than 5 kt becoming SW 5 to 10 kt in the afternoon. Sunny. Waves 1 ft or less.

Tuesday Night

WSW wind 6 to 10 kt. A chance of showers after 2am. Waves 1 ft or less.

Wednesday

WSW wind 7 to 9 kt becoming NW in the afternoon. Showers likely, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Wednesday Night

NNW wind 6 to 8 kt becoming NNE in the evening. A chance of thunderstorms before 8pm. Waves 1 ft or less.

Thursday

N wind around 7 kt. Mostly sunny. 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.