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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tuesday
High: 42 °F
WSW 9kt
< 1ft
Tuesday Night
Low: 26 °F
WNW 13kt
< 1ft
Wednesday
High: 31 °F
WNW 12kt
< 1ft
Wednesday Night
Low: 20 °F
WNW 9kt
< 1ft
Thursday
High: 30 °F
WNW 6kt
< 1ft
Thursday Night
Low: 19 °F
Light Wind
< 1ft
Friday
High: 35 °F
WSW 8kt
< 1ft
Friday Night
Low: 22 °F
WSW 7kt
< 1ft
Saturday
High: 35 °F
⇑S 6kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 1:13 am EST Feb 10, 2026
Forecast Valid: 1am EST Feb 10, 2026-6pm EST Feb 16, 2026

View Nearby Observations

Detailed Forecast

Tuesday

S wind 7 to 9 kt becoming W in the afternoon. Mostly cloudy. Waves 1 ft or less.

Tuesday Night

WNW wind 11 to 13 kt, with gusts as high as 19 kt. A slight chance of rain before 9pm, then a slight chance of snow between 9pm and midnight. Waves 1 ft or less.

Wednesday

WNW wind 10 to 12 kt, with gusts as high as 18 kt. Mostly cloudy. Waves 1 ft or less.

Wednesday Night

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

Thursday

WNW wind around 6 kt. Partly sunny. Waves 1 ft or less.

Thursday Night

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

Friday

WSW wind 5 to 8 kt. Mostly sunny. Waves 1 ft or less.

Friday Night

WSW wind 5 to 7 kt. Mostly clear. Waves 1 ft or less.

Saturday

Variable winds less than 5 kt becoming S around 6 kt in the morning. 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.