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Detroit/Pontiac, MI Local Forecast Office

Grosse Ile MI

Marine Point Forecast

[NOTICE]

Tonight
Low: 74 °F
Light Wind
< 1ft
Saturday
High: 91 °F
SSW 9kt
< 1ft
Saturday Night
Low: 71 °F
WSW 8kt
< 1ft
Sunday
High: 87 °F
W 8kt
< 1ft
Sunday Night
Low: 66 °F
W 6kt⇓
< 1ft
Monday
High: 88 °F
⇑WSW 6kt
< 1ft
Monday Night
Low: 70 °F
Light Wind
< 1ft
Tuesday
High: 89 °F
⇑S 6kt
< 1ft
Tuesday Night
Low: 72 °F
SSE 6kt
< 1ft

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

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 11pm. Waves 1 ft or less.

Saturday

SSW wind 5 to 9 kt. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Waves 1 ft or less.

Saturday Night

WSW wind 6 to 8 kt. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Waves 1 ft or less.

Sunday

W wind 5 to 8 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

W wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Waves 1 ft or less.

Monday

Variable winds less than 5 kt becoming WSW around 6 kt in the morning. Sunny. Waves 1 ft or less.

Monday Night

Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

Tuesday Night

SSE wind around 6 kt. Mostly cloudy. 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.