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Detroit/Pontiac, MI Local Forecast Office

7NM S Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 84 °F
⇑S 6kt
< 1ft
Tonight
Low: 73 °F
SE 6kt
< 1ft
Wednesday
High: 82 °F
SSE 8kt
< 1ft
Wednesday Night
Low: 74 °F
SW 9kt
< 1ft
Thursday
High: 84 °F
WSW 11kt
< 1ft
Thursday Night
Low: 64 °F
NW 9kt
< 1ft
Friday
High: 75 °F
NNE 9kt
< 1ft
Friday Night
Low: 65 °F
ENE 7kt
< 1ft
Saturday
High: 79 °F
S 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: 9:49 am EDT Jul 15, 2025
Forecast Valid: 12pm EDT Jul 15, 2025-6pm EDT Jul 21, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

Variable winds less than 5 kt becoming S around 6 kt. Sunny. Waves 1 ft or less.

Tonight

SE wind around 6 kt. Partly cloudy. Waves 1 ft or less.

Wednesday

SSW wind 6 to 8 kt becoming SSE in the afternoon. Showers likely, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Wednesday Night

S wind 6 to 9 kt becoming SW after midnight. A chance of showers and thunderstorms before 8pm. Waves 1 ft or less.

Thursday

WSW wind around 11 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Thursday Night

NW wind around 9 kt becoming NNE after midnight. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Waves 1 ft or less.

Friday

NNE wind 7 to 9 kt. Mostly sunny. Waves 1 ft or less.

Friday Night

ENE wind 5 to 7 kt. Partly cloudy. Waves 1 ft or less.

Saturday

NNE wind 5 to 7 kt becoming S in the afternoon. Mostly 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.