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Detroit/Pontiac, MI Local Forecast Office

Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 23 °C
SSE 10km/h
< 1m
Saturday
High: 33 °C
SSW 16km/h
< 1m
Saturday Night
Low: 22 °C
WSW 14km/h
< 1m
Sunday
High: 31 °C
W 14km/h
< 1m
Sunday Night
Low: 19 °C
WNW 11km/h
< 1m
Monday
High: 31 °C
WSW 11km/h
< 1m
Monday Night
Low: 21 °C
WSW 10km/h
< 1m
Tuesday
High: 32 °C
S 11km/h
< 1m
Tuesday Night
Low: 22 °C
SSE 11km/h
< 1m

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:13 pm EDT Jul 11, 2025
Forecast Valid: 9pm EDT Jul 11, 2025-6pm EDT Jul 18, 2025

View Nearby Observations

Detailed Forecast

Tonight

SSE wind 8 to 10 km/h. A chance of showers and thunderstorms, mainly before 11pm. Waves 1 m or less.

Saturday

SSW wind 10 to 16 km/h. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Waves 1 m or less.

Saturday Night

WSW wind 11 to 14 km/h. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Waves 1 m or less.

Sunday

W wind 10 to 14 km/h. Mostly sunny. Waves 1 m or less.

Sunday Night

WNW wind 8 to 11 km/h. Partly cloudy. Waves 1 m or less.

Monday

WNW wind 8 to 11 km/h becoming WSW in the afternoon. Sunny. Waves 1 m or less.

Monday Night

WSW wind 5 to 10 km/h. Mostly clear. Waves 1 m or less.

Tuesday

W wind 5 to 11 km/h becoming S in the afternoon. Mostly sunny. Waves 1 m or less.

Tuesday Night

SSE wind around 11 km/h. Mostly cloudy. Waves 1 m 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.