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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 60 °F
S 7kt⇓
< 1ft
Thursday
High: 85 °F
⇑S 10kt
< 1ft
Thursday Night
Low: 67 °F
S 8kt
< 1ft
Friday
High: 87 °F
SW 14kt
< 1ft
Friday Night
Low: 67 °F
SW 12kt
< 1ft
Saturday
High: 82 °F
W 11kt
< 1ft
Saturday Night
Low: 62 °F
WNW 6kt⇓
< 1ft
Sunday
High: 80 °F
NNE 7kt
< 1ft
Sunday Night
Low: 61 °F
ENE 9kt
< 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 Jun 3, 2026
Forecast Valid: 8pm EDT Jun 3, 2026-6pm EDT Jun 10, 2026

View Nearby Observations

Detailed Forecast

Tonight

S wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.

Thursday

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Mostly sunny. Waves 1 ft or less.

Thursday Night

S wind 5 to 8 kt. Increasing clouds. Waves 1 ft or less.

Friday

SW wind 8 to 14 kt, with gusts as high as 21 kt. Mostly sunny. Waves 1 ft or less.

Friday Night

SW wind around 12 kt, with gusts as high as 19 kt. Showers likely, mainly after 2am. Waves 1 ft or less.

Saturday

W wind around 11 kt. Showers likely, then showers and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Saturday Night

WNW wind around 6 kt becoming variable and less than 5 kt in the evening. Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Waves 1 ft or less.

Sunday

NNE wind 5 to 7 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

ENE wind 5 to 9 kt. Mostly clear. 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.