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Detroit/Pontiac, MI Local Forecast Office

Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 52 °F
SW 15kt
< 1ft
Wednesday
High: 58 °F
W 16kt
< 1ft
Wednesday Night
Low: 44 °F
NW 14kt
< 1ft
Thursday
High: 64 °F
N 10kt
< 1ft
Thursday Night
Low: 46 °F
Light Wind
< 1ft
Friday
High: 70 °F
⇑S 11kt
< 1ft
Friday Night
Low: 55 °F
S 10kt
< 1ft
Saturday
High: 83 °F
WSW 13kt
< 1ft
Saturday Night
Low: 56 °F
W 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: 8:35 pm EDT May 12, 2026
Forecast Valid: 9pm EDT May 12, 2026-6pm EDT May 19, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSE wind 11 to 15 kt becoming SW after midnight. Winds could gust as high as 24 kt. Showers and thunderstorms before 2am, then showers likely. Waves 1 ft or less.

Wednesday

W wind 13 to 16 kt, with gusts as high as 23 kt. Increasing clouds. Waves 1 ft or less.

Wednesday Night

NW wind 9 to 14 kt, with gusts as high as 20 kt. Cloudy, then gradually becoming partly cloudy. Waves 1 ft or less.

Thursday

N wind around 10 kt. Increasing clouds. Waves 1 ft or less.

Thursday Night

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

Friday

Variable winds less than 5 kt becoming S 6 to 11 kt in the morning. Partly sunny. Waves 1 ft or less.

Friday Night

S wind around 10 kt. Mostly cloudy. Waves 1 ft or less.

Saturday

WSW wind 8 to 13 kt, with gusts as high as 19 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

W wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. 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.