News Headlines

For More Weather Information:

Detroit/Pontiac, MI Local Forecast Office

7NM S Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 40 °F
⇑E 6kt
< 1ft
Tonight
Low: 34 °F
NNE 8kt
< 1ft
Wednesday
High: 43 °F
NNE 7kt
< 1ft
Wednesday Night
Low: 36 °F
Light Wind
< 1ft
Thursday
High: 47 °F
⇑S 6kt
< 1ft
Thursday Night
Low: 40 °F
SSW 8kt
< 1ft
Friday
High: 47 °F
WNW 8kt
< 1ft
Friday Night
Low: 30 °F
NW 6kt
< 1ft
Saturday
High: 43 °F
W 7kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:13 am EST Nov 18, 2025
Forecast Valid: 11am EST Nov 18, 2025-6pm EST Nov 24, 2025

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming E around 6 kt in the afternoon. Rain likely, possibly mixed with snow, becoming all rain after 2pm. Waves 1 ft or less.

Tonight

NNE wind around 8 kt. A chance of rain before 1am. Waves 1 ft or less.

Wednesday

NNE wind 5 to 7 kt. Partly sunny. Waves 1 ft or less.

Wednesday Night

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

Thursday

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

Thursday Night

S wind around 8 kt becoming W after midnight. A chance of rain. Waves 1 ft or less.

Friday

WNW wind around 8 kt. Partly sunny. Waves 1 ft or less.

Friday Night

NW wind around 6 kt. Partly cloudy. Waves 1 ft or less.

Saturday

NNW wind around 7 kt becoming SW in the afternoon. Mostly 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.