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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 87 °F
N 7kt
< 1ft
Tonight
Low: 68 °F
Light Wind
< 1ft
Friday
High: 89 °F
⇑SW 6kt
< 1ft
Friday Night
Low: 70 °F
S 6kt⇓
< 1ft
Saturday
High: 79 °F
⇑NE 7kt
< 1ft
Saturday Night
Low: 66 °F
NNE 6kt
< 1ft
Sunday
High: 82 °F
NNE 10kt
< 1ft
Sunday Night
Low: 62 °F
NNE 12kt
< 1ft
Monday
High: 82 °F
NE 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: 4:25 am EDT Jul 30, 2026
Forecast Valid: 11am EDT Jul 30, 2026-6pm EDT Aug 5, 2026

View Nearby Observations

Detailed Forecast

Today

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

Tonight

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

Friday

Variable winds less than 5 kt becoming SW around 6 kt in the afternoon. Increasing clouds. Waves 1 ft or less.

Friday Night

S wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers after 2am. Waves 1 ft or less.

Saturday

Variable winds less than 5 kt becoming NE 5 to 7 kt in the morning. A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers likely after 5pm. Waves 1 ft or less.

Saturday Night

NNE wind around 6 kt. Showers likely, mainly before 8pm. Waves 1 ft or less.

Sunday

NNE wind 8 to 10 kt. Mostly sunny. Waves 1 ft or less.

Sunday Night

NNE wind 7 to 12 kt. Partly cloudy. Waves 1 ft or less.

Monday

NNE wind around 8 kt becoming E in the afternoon. Sunny. 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.