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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Overnight
Low: 68 °F
WSW 13kt
< 1ft
Saturday
High: 84 °F
W 11kt
< 1ft
Saturday Night
Low: 64 °F
WNW 8kt⇓
< 1ft
Sunday
High: 83 °F
⇑ENE 6kt
< 1ft
Sunday Night
Low: 62 °F
ENE 8kt
< 1ft
Monday
High: 83 °F
ESE 10kt
< 1ft
Monday Night
Low: 66 °F
ESE 10kt
< 1ft
Tuesday
High: 85 °F
S 9kt
< 1ft
Tuesday Night
Low: 69 °F
S 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: 10:24 pm EDT Jun 5, 2026
Forecast Valid: 11pm EDT Jun 5, 2026-6pm EDT Jun 12, 2026

View Nearby Observations

Detailed Forecast

Overnight

WSW wind 10 to 13 kt, with gusts as high as 20 kt. Scattered showers and thunderstorms. Waves 1 ft or less.

Saturday

W wind around 11 kt. Scattered showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then scattered showers and thunderstorms after 4pm. Waves 1 ft or less.

Saturday Night

WNW wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Scattered showers before 7pm. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming ENE around 6 kt in the afternoon. Sunny. Waves 1 ft or less.

Sunday Night

ENE wind 5 to 8 kt. Mostly clear. Waves 1 ft or less.

Monday

ESE wind 5 to 10 kt. Mostly sunny. Waves 1 ft or less.

Monday Night

ESE wind 5 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Tuesday

S wind 5 to 9 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Tuesday Night

S wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm before 2am, then a chance of showers. 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.