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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 83 °F
⇑SSW 7kt
< 1ft
Tonight
Low: 68 °F
SSW 8kt
< 1ft
Sunday
High: 88 °F
⇑WSW 7kt
< 1ft
Sunday Night
Low: 71 °F
SW 6kt⇓
< 1ft
Monday
High: 87 °F
SW 10kt
< 1ft
Monday Night
Low: 70 °F
SW 10kt
< 1ft
Tuesday
High: 83 °F
N 11kt
< 1ft
Tuesday Night
Low: 64 °F
N 11kt
< 1ft
Wednesday
High: 81 °F
N 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 am EDT Jul 25, 2026
Forecast Valid: 11am EDT Jul 25, 2026-6pm EDT Jul 31, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

Tonight

SSW wind 5 to 8 kt becoming W after midnight. Mostly clear. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming WSW 5 to 7 kt in the morning. A chance of showers and thunderstorms between 4pm and 5pm. Waves 1 ft or less.

Sunday Night

SW wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers and thunderstorms between 7pm and 11pm, then a chance of showers after 11pm. Waves 1 ft or less.

Monday

SW wind 6 to 10 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Monday Night

SW wind 8 to 10 kt becoming W in the evening. Showers and possibly a thunderstorm before 8pm, then showers and thunderstorms likely between 8pm and 2am, then a chance of showers after 2am. Waves 1 ft or less.

Tuesday

N wind around 11 kt. A chance of showers before 8am. Waves 1 ft or less.

Tuesday Night

N wind 7 to 11 kt. Partly cloudy. Waves 1 ft or less.

Wednesday

N wind 7 to 10 kt. 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.