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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 85 °F
⇑SW 7kt
< 1ft
Tonight
Low: 70 °F
Light Wind
< 1ft
Monday
High: 86 °F
SW 10kt
< 1ft
Monday Night
Low: 70 °F
SW 9kt
< 1ft
Tuesday
High: 82 °F
N 12kt
< 1ft
Tuesday Night
Low: 64 °F
N 12kt
< 1ft
Wednesday
High: 81 °F
N 11kt
< 1ft
Wednesday Night
Low: 62 °F
N 10kt
< 1ft
Thursday
High: 83 °F
NNE 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: 4:24 am EDT Jul 26, 2026
Forecast Valid: 7am EDT Jul 26, 2026-6pm EDT Aug 1, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming SW 5 to 7 kt in the morning. A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Waves 1 ft or less.

Monday

NNW wind 5 to 10 kt becoming SW in the morning. A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Monday Night

SW wind around 9 kt. Showers and possibly a thunderstorm before 5am, then showers likely. Waves 1 ft or less.

Tuesday

N wind 10 to 12 kt, with gusts as high as 19 kt. Showers likely before 8am. Waves 1 ft or less.

Tuesday Night

N wind 10 to 12 kt, with gusts as high as 18 kt. Mostly clear. Waves 1 ft or less.

Wednesday

N wind around 11 kt, with gusts as high as 18 kt. Sunny. Waves 1 ft or less.

Wednesday Night

N wind 6 to 10 kt. Mostly clear. Waves 1 ft or less.

Thursday

NNE wind around 7 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.