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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 86 °F
WSW 10kt
< 1ft
Tonight
Low: 70 °F
WSW 6kt⇓
< 1ft
Friday
High: 83 °F
Light Wind
< 1ft
Friday Night
Low: 66 °F
NNE 6kt
< 1ft
Saturday
High: 83 °F
ENE 8kt
< 1ft
Saturday Night
Low: 66 °F
ENE 8kt⇓
< 1ft
Sunday
High: 84 °F
⇑E 7kt
< 1ft
Sunday Night
Low: 68 °F
E 7kt⇓
< 1ft
Monday
High: 88 °F
⇑SSE 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: 10:50 am EDT Jul 9, 2026
Forecast Valid: 1pm EDT Jul 9, 2026-6pm EDT Jul 15, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

WSW wind around 10 kt. A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Waves 1 ft or less.

Tonight

WSW wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms. Waves 1 ft or less.

Friday

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

Friday Night

NNE wind around 6 kt. Mostly cloudy. Waves 1 ft or less.

Saturday

ENE wind 6 to 8 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. Mostly clear. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming E 5 to 7 kt in the morning. Sunny. Waves 1 ft or less.

Sunday Night

E wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

Monday

Variable winds less than 5 kt becoming SSE 5 to 8 kt in the afternoon. 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.