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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 87 °F
⇑SSW 9kt
< 1ft
Tonight
Low: 71 °F
SSW 8kt⇓
< 1ft
Thursday
High: 83 °F
⇑SW 8kt
< 1ft
Thursday Night
Low: 69 °F
Light Wind
< 1ft
Friday
High: 84 °F
⇑SSW 8kt
< 1ft
Friday Night
Low: 70 °F
SSW 7kt
< 1ft
Saturday
High: 87 °F
WSW 10kt
< 1ft
Saturday Night
Low: 68 °F
W 8kt
< 1ft
Sunday
High: 86 °F
⇑SW 11kt
< 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 am EDT Aug 5, 2026
Forecast Valid: 8am EDT Aug 5, 2026-6pm EDT Aug 11, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming SSW 5 to 9 kt in the afternoon. Sunny. Waves 1 ft or less.

Tonight

SSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 4am, then a slight chance of showers and thunderstorms after 5am. Waves 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SW 5 to 8 kt in the morning. A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Thursday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms. Waves 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSW 5 to 8 kt in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Friday Night

SSW wind around 7 kt. A chance of thunderstorms before 8pm. Waves 1 ft or less.

Saturday

WSW wind 7 to 10 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

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

Sunday

Variable winds less than 5 kt becoming SW 6 to 11 kt in the morning. Winds could gust as high as 18 kt. A chance of showers and thunderstorms after 2pm. 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.