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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 98 °F
WSW 11kt
< 1ft
Tonight
Low: 78 °F
WSW 11kt
< 1ft
Thursday
High: 98 °F
WSW 13kt
< 1ft
Thursday Night
Low: 77 °F
WSW 11kt
< 1ft
Friday
High: 95 °F
WSW 10kt
< 1ft
Friday Night
Low: 74 °F
SW 8kt
< 1ft
Independence Day
High: 92 °F
WSW 8kt
< 1ft
Saturday Night
Low: 71 °F
W 7kt⇓
< 1ft
Sunday
High: 88 °F
⇑ENE 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: 4:24 am EDT Jul 1, 2026
Forecast Valid: 6am EDT Jul 1, 2026-6pm EDT Jul 7, 2026

View Nearby Observations

Detailed Forecast

Today

WSW wind 8 to 11 kt, with gusts as high as 18 kt. Sunny. Waves 1 ft or less.

Tonight

WSW wind 8 to 11 kt. Mostly clear. Waves 1 ft or less.

Thursday

WSW wind 8 to 13 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.

Thursday Night

WSW wind 6 to 11 kt. Mostly clear. Waves 1 ft or less.

Friday

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

Friday Night

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

Independence Day

WSW wind 6 to 8 kt. Showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Saturday Night

W wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming ENE 5 to 7 kt in the morning. 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.