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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 64 °F
NNW 11kt
< 1ft
Wednesday
High: 82 °F
N 12kt
< 1ft
Wednesday Night
Low: 63 °F
N 10kt⇓
< 1ft
Thursday
High: 85 °F
NNE 8kt
< 1ft
Thursday Night
Low: 65 °F
ENE 7kt⇓
< 1ft
Friday
High: 86 °F
⇑S 8kt
< 1ft
Friday Night
Low: 69 °F
SSE 7kt⇓
< 1ft
Saturday
High: 82 °F
⇑E 7kt
< 1ft
Saturday Night
Low: 67 °F
NE 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: 4:26 pm EDT Jul 28, 2026
Forecast Valid: 9pm EDT Jul 28, 2026-6pm EDT Aug 4, 2026

View Nearby Observations

Detailed Forecast

Tonight

NNW wind 7 to 11 kt. Mostly clear. Waves 1 ft or less.

Wednesday

N wind 9 to 12 kt. Sunny. Waves 1 ft or less.

Wednesday Night

N wind 5 to 10 kt becoming variable and less than 5 kt. Mostly clear. Waves 1 ft or less.

Thursday

NNE wind 6 to 8 kt. Sunny. Waves 1 ft or less.

Thursday Night

ENE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

Friday

Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

Friday Night

SSE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Mostly cloudy. Waves 1 ft or less.

Saturday

Variable winds less than 5 kt becoming E 5 to 7 kt in the morning. A chance of showers. Waves 1 ft or less.

Saturday Night

NE wind 5 to 7 kt. A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. 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.