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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 84 °F
Light Wind
< 1ft
Tonight
Low: 69 °F
Light Wind
< 1ft
Friday
High: 83 °F
E 8kt
< 1ft
Friday Night
Low: 66 °F
ESE 7kt
< 1ft
Saturday
High: 82 °F
SE 9kt
< 1ft
Saturday Night
Low: 70 °F
SE 9kt
< 1ft
Sunday
High: 86 °F
W 12kt
< 1ft
Sunday Night
Low: 67 °F
WNW 9kt
< 1ft
Monday
High: 82 °F
N 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: 4:24 am EDT Aug 13, 2026
Forecast Valid: 7am EDT Aug 13, 2026-6pm EDT Aug 19, 2026

View Nearby Observations

Detailed Forecast

Today

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

Tonight

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

Friday

ENE wind 5 to 8 kt becoming ESE in the afternoon. Mostly cloudy. Waves 1 ft or less.

Friday Night

ESE wind 5 to 7 kt becoming ENE in the evening. Partly cloudy. Waves 1 ft or less.

Saturday

E wind 6 to 9 kt becoming SE in the afternoon. Mostly sunny. Waves 1 ft or less.

Saturday Night

SE wind 7 to 9 kt becoming SSW after midnight. A chance of thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Waves 1 ft or less.

Sunday

W wind 9 to 12 kt, with gusts as high as 18 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Sunday Night

WNW wind 7 to 9 kt becoming N after midnight. Showers likely and possibly a thunderstorm before 8pm. Waves 1 ft or less.

Monday

N wind around 8 kt. 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.