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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 63 °F
⇑WSW 9kt
< 1ft
Tonight
Low: 48 °F
SW 7kt⇓
< 1ft
Saturday
High: 70 °F
SW 16kt
< 1ft
Saturday Night
Low: 46 °F
W 11kt
< 1ft
Sunday
High: 61 °F
⇑WNW 7kt
< 1ft
Sunday Night
Low: 42 °F
NNW 7kt
< 1ft
Monday
High: 57 °F
N 8kt
< 1ft
Monday Night
Low: 40 °F
N 7kt⇓
< 1ft
Tuesday
High: 59 °F
⇑S 8kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:35 am EDT May 8, 2026
Forecast Valid: 9am EDT May 8, 2026-6pm EDT May 14, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming WSW 5 to 9 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

Tonight

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

Saturday

SW wind 6 to 16 kt, with gusts as high as 24 kt. A chance of showers and thunderstorms between 2pm and 4pm, then a chance of thunderstorms after 4pm. Waves 1 ft or less.

Saturday Night

W wind 5 to 11 kt becoming NNW after midnight. Partly cloudy. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming WNW 5 to 7 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

Sunday Night

NNW wind 5 to 7 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 1 ft or less.

Monday

N wind around 8 kt. Sunny. Waves 1 ft or less.

Monday Night

N wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Waves 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. A chance of showers. 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.