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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 91 °F
WSW 14kt
< 1ft
Tonight
Low: 67 °F
NW 11kt
< 1ft
Sunday
High: 82 °F
NNE 6kt
< 1ft
Sunday Night
Low: 64 °F
E 7kt⇓
< 1ft
Monday
High: 83 °F
⇑S 10kt
< 1ft
Monday Night
Low: 70 °F
SSW 13kt
< 1ft
Tuesday
High: 85 °F
SW 14kt
< 1ft
Tuesday Night
Low: 63 °F
NW 12kt
< 1ft
Wednesday
High: 75 °F
WNW 13kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:25 am EDT Jul 18, 2026
Forecast Valid: 7am EDT Jul 18, 2026-6pm EDT Jul 24, 2026

View Nearby Observations

Detailed Forecast

Today

WSW wind 11 to 14 kt, with gusts as high as 22 kt. A slight chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Waves 1 ft or less.

Tonight

NW wind 8 to 11 kt becoming NNE in the evening. A slight chance of showers and thunderstorms before 7pm. Patchy smoke after 3am. Waves 1 ft or less.

Sunday

NNE wind around 6 kt. Patchy smoke before 8am. Waves 1 ft or less.

Sunday Night

E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Waves 1 ft or less.

Monday

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Mostly sunny. Waves 1 ft or less.

Monday Night

SSW wind 9 to 13 kt. Showers, mainly after 2am. Waves 1 ft or less.

Tuesday

SW wind 12 to 14 kt, with gusts as high as 20 kt. Showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Tuesday Night

NW wind around 12 kt. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.

Wednesday

WNW wind around 13 kt, with gusts as high as 19 kt. 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.