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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 87 °F
⇑WSW 9kt
< 1ft
Tonight
Low: 70 °F
WSW 6kt
< 1ft
Tuesday
High: 81 °F
N 12kt
< 1ft
Tuesday Night
Low: 65 °F
NNW 13kt
< 1ft
Wednesday
High: 80 °F
N 13kt
< 1ft
Wednesday Night
Low: 62 °F
N 11kt
< 1ft
Thursday
High: 84 °F
NNW 8kt
< 1ft
Thursday Night
Low: 66 °F
E 6kt⇓
< 1ft
Friday
High: 85 °F
⇑SSW 6kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:49 am EDT Jul 27, 2026
Forecast Valid: 6am EDT Jul 27, 2026-6pm EDT Aug 2, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming WSW 5 to 9 kt in the morning. Isolated showers, then scattered showers and thunderstorms after 11am. Waves 1 ft or less.

Tonight

WSW wind around 6 kt becoming WNW in the evening. Scattered showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 1am, then scattered showers and thunderstorms after 1am. Waves 1 ft or less.

Tuesday

N wind 9 to 12 kt. Partly sunny. Waves 1 ft or less.

Tuesday Night

NNW wind 11 to 13 kt, with gusts as high as 20 kt. Partly cloudy. Waves 1 ft or less.

Wednesday

N wind around 13 kt, with gusts as high as 20 kt. Sunny. Waves 1 ft or less.

Wednesday Night

N wind 6 to 11 kt. Mostly clear. Waves 1 ft or less.

Thursday

NNW wind 6 to 8 kt. Sunny. Waves 1 ft or less.

Thursday Night

E wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

Friday

Variable winds less than 5 kt becoming SSW around 6 kt 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.