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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 70 °F
SW 7kt
< 1ft
Tonight
Low: 59 °F
SE 7kt
< 1ft
Saturday
High: 74 °F
SSE 10kt
< 1ft
Saturday Night
Low: 60 °F
SE 11kt
< 1ft
Sunday
High: 66 °F
ESE 10kt
< 1ft
Sunday Night
Low: 58 °F
Light Wind
< 1ft
Columbus Day
High: 75 °F
⇑SSW 10kt
< 1ft
Monday Night
Low: 62 °F
SW 9kt
< 1ft
Tuesday
High: 71 °F
WNW 12kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 2:24 pm EDT Oct 9, 2026
Forecast Valid: 2pm EDT Oct 9, 2026-6pm EDT Oct 15, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SW wind around 7 kt. Mostly sunny. Waves 1 ft or less.

Tonight

SE wind 5 to 7 kt. A slight chance of rain between 10pm and midnight. Waves 1 ft or less.

Saturday

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

Saturday Night

SE wind 9 to 11 kt. Rain likely after 5am. Waves 1 ft or less.

Sunday

ESE wind 7 to 10 kt. Rain, mainly before 2pm. Waves 1 ft or less.

Sunday Night

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

Columbus Day

Variable winds less than 5 kt becoming SSW 5 to 10 kt in the morning. Mostly sunny. Waves 1 ft or less.

Monday Night

SW wind around 9 kt. Rain likely and possibly a thunderstorm after 2am. Waves 1 ft or less.

Tuesday

WSW wind 10 to 12 kt becoming NW in the afternoon. Winds could gust as high as 19 kt. Rain likely and possibly a thunderstorm before 8am, then a chance of rain between 8am and 2pm. 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.