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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 62 °F
W 6kt
< 1ft
Thursday
High: 79 °F
WSW 10kt
< 1ft
Thursday Night
Low: 61 °F
W 8kt⇓
< 1ft
Friday
High: 75 °F
Light Wind
< 1ft
Friday Night
Low: 62 °F
E 7kt
< 1ft
Saturday
High: 79 °F
NE 8kt
< 1ft
Saturday Night
Low: 64 °F
E 7kt⇓
< 1ft
Sunday
High: 83 °F
⇑SE 8kt
< 1ft
Sunday Night
Low: 69 °F
SE 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 24, 2026
Forecast Valid: 7pm EDT Jun 24, 2026-6pm EDT Jul 1, 2026

View Nearby Observations

Detailed Forecast

Tonight

W wind around 6 kt becoming E in the evening. Showers and thunderstorms before 3am, then showers and possibly a thunderstorm, mainly after 3am. Waves 1 ft or less.

Thursday

WSW wind 7 to 10 kt. A chance of showers, with thunderstorms also possible after noon. Waves 1 ft or less.

Thursday Night

W wind 5 to 8 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms before 8pm. 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

E wind around 7 kt becoming NE after midnight. A chance of showers before 2am. Waves 1 ft or less.

Saturday

NE wind around 8 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

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

Sunday

Variable winds less than 5 kt becoming SE 5 to 8 kt in the morning. Mostly sunny. Waves 1 ft or less.

Sunday Night

SE wind 5 to 9 kt. 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.