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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 88 °F
SSW 7kt
< 1ft
Tonight
Low: 70 °F
SSW 7kt⇓
< 1ft
Thursday
High: 87 °F
⇑WSW 10kt
< 1ft
Thursday Night
Low: 70 °F
W 7kt⇓
< 1ft
Friday
High: 83 °F
Light Wind
< 1ft
Friday Night
Low: 66 °F
NE 6kt
< 1ft
Saturday
High: 83 °F
ENE 9kt
< 1ft
Saturday Night
Low: 66 °F
ENE 8kt⇓
< 1ft
Sunday
High: 84 °F
⇑E 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: 4:24 pm EDT Jul 8, 2026
Forecast Valid: 4pm EDT Jul 8, 2026-6pm EDT Jul 14, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind around 7 kt. Sunny. Waves 1 ft or less.

Tonight

SSW 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 WSW 5 to 10 kt in the morning. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Thursday Night

W wind 5 to 7 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms before 1am, then showers likely between 1am and 2am. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. A chance of showers after 2pm. Waves 1 ft or less.

Friday Night

NE wind around 6 kt. A chance of showers before 8pm. Waves 1 ft or less.

Saturday

ENE wind 7 to 9 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

ENE wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.

Sunday

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