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Detroit/Pontiac, MI Local Forecast Office

Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 65 °F
ENE 6kt⇓
< 1ft
Independence Day
High: 85 °F
⇑SSE 6kt
< 1ft
Friday Night
Low: 72 °F
SE 7kt⇓
< 1ft
Saturday
High: 92 °F
SW 9kt
< 1ft
Saturday Night
Low: 75 °F
SSW 8kt
< 1ft
Sunday
High: 93 °F
SW 10kt
< 1ft
Sunday Night
Low: 72 °F
W 8kt
< 1ft
Monday
High: 86 °F
WNW 7kt
< 1ft
Monday Night
Low: 66 °F
NE 7kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:13 pm EDT Jul 3, 2025
Forecast Valid: 7pm EDT Jul 3, 2025-6pm EDT Jul 10, 2025

View Nearby Observations

Detailed Forecast

Tonight

ENE wind around 6 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Waves 1 ft or less.

Independence Day

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

Friday Night

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

Saturday

SW wind 5 to 9 kt. Sunny. Waves 1 ft or less.

Saturday Night

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

Sunday

SW wind 8 to 10 kt. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Sunday Night

W wind 5 to 8 kt. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.

Monday

WNW wind 5 to 7 kt. A chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Monday Night

NE wind 5 to 7 kt. A chance of thunderstorms before 8pm. 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.