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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 82 °F
⇑S 9kt
< 1ft
Tonight
Low: 71 °F
SW 12kt
< 1ft
Tuesday
High: 86 °F
SW 14kt
< 1ft
Tuesday Night
Low: 60 °F
NNW 13kt
< 1ft
Wednesday
High: 75 °F
NNW 13kt
< 1ft
Wednesday Night
Low: 58 °F
NNW 9kt⇓
< 1ft
Thursday
High: 79 °F
Light Wind
< 1ft
Thursday Night
Low: 62 °F
SSE 6kt⇓
< 1ft
Friday
High: 78 °F
⇑S 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: 4:25 am EDT Jul 20, 2026
Forecast Valid: 6am EDT Jul 20, 2026-6pm EDT Jul 26, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. Patchy smoke after 8am. Waves 1 ft or less.

Tonight

S wind 8 to 12 kt becoming SW after midnight. Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then a chance of showers and thunderstorms after 4am. Patchy smoke. Waves 1 ft or less.

Tuesday

SW wind around 14 kt, with gusts as high as 23 kt. A chance of showers, with thunderstorms also possible after 2pm. Waves 1 ft or less.

Tuesday Night

NNW wind 11 to 13 kt, with gusts as high as 19 kt. A chance of showers and thunderstorms between 7pm and 8pm. Waves 1 ft or less.

Wednesday

NNW wind around 13 kt, with gusts as high as 20 kt. Mostly sunny. Waves 1 ft or less.

Wednesday Night

NNW wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly clear. Waves 1 ft or less.

Thursday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Thursday Night

SSE 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 S 5 to 7 kt in the afternoon. 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.