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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Overnight
Low: 64 °F
ESE 6kt
< 1ft
Saturday
High: 82 °F
S 9kt
< 1ft
Saturday Night
Low: 68 °F
SSW 7kt
< 1ft
Sunday
High: 81 °F
WNW 9kt
< 1ft
Sunday Night
Low: 58 °F
N 11kt
< 1ft
Monday
High: 73 °F
N 8kt
< 1ft
Monday Night
Low: 62 °F
SE 10kt
< 1ft
Tuesday
High: 82 °F
SSW 13kt
< 1ft
Tuesday Night
Low: 67 °F
SW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:24 pm EDT Sep 11, 2026
Forecast Valid: 12am EDT Sep 12, 2026-6pm EDT Sep 18, 2026

View Nearby Observations

Detailed Forecast

Overnight

ESE wind around 6 kt. Mostly cloudy. Waves 1 ft or less.

Saturday

SSE wind 5 to 9 kt becoming SSW in the afternoon. A slight chance of showers between 9am and 11am. Waves 1 ft or less.

Saturday Night

SSW wind 5 to 7 kt becoming W after midnight. Partly cloudy. Waves 1 ft or less.

Sunday

WNW wind 5 to 9 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

N wind 9 to 11 kt. Partly cloudy. Waves 1 ft or less.

Monday

N wind around 8 kt becoming ENE in the afternoon. Sunny. Waves 1 ft or less.

Monday Night

SE wind 7 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Tuesday

SSW wind around 13 kt, with gusts as high as 19 kt. Partly sunny. Waves 1 ft or less.

Tuesday Night

SW wind 5 to 10 kt. A chance of thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. 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.