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Detroit/Pontiac, MI Local Forecast Office

7NM S Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 90 °F
SSW 9kt
< 1ft
Tonight
Low: 74 °F
SSW 9kt
< 1ft
Tuesday
High: 89 °F
SW 8kt
< 1ft
Tuesday Night
Low: 70 °F
⇑NNE 6kt
< 1ft
Wednesday
High: 79 °F
NE 7kt
< 1ft
Wednesday Night
Low: 68 °F
ENE 7kt
< 1ft
Thursday
High: 81 °F
SSW 8kt
< 1ft
Thursday Night
Low: 71 °F
ESE 10kt
< 1ft
Friday
High: 84 °F
SW 9kt
1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:35 am EDT Jun 23, 2025
Forecast Valid: 12pm EDT Jun 23, 2025-6pm EDT Jun 29, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

SSW wind 7 to 9 kt. Sunny. Waves 1 ft or less.

Tonight

SSW wind 7 to 9 kt. Mostly clear. Waves 1 ft or less.

Tuesday

SW wind around 8 kt. A chance of showers after 2pm. Waves 1 ft or less.

Tuesday Night

Variable winds less than 5 kt becoming NNE around 6 kt in the evening. A chance of showers and thunderstorms. Waves 1 ft or less.

Wednesday

NE wind around 7 kt becoming SSE in the afternoon. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Wednesday Night

ENE wind around 7 kt. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Waves 1 ft or less.

Thursday

SSW wind 6 to 8 kt. A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Thursday Night

ESE wind 8 to 10 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Waves 1 ft or less.

Friday

SW wind around 9 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Waves around 1 ft.

*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.