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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 80 °F
⇑SE 7kt
< 1ft
Tonight
Low: 63 °F
SSE 6kt⇓
< 1ft
Saturday
High: 84 °F
⇑SW 7kt
< 1ft
Saturday Night
Low: 69 °F
WSW 8kt
< 1ft
Sunday
High: 88 °F
⇑W 7kt
< 1ft
Sunday Night
Low: 71 °F
SW 6kt
< 1ft
Monday
High: 89 °F
SW 9kt
< 1ft
Monday Night
Low: 70 °F
WSW 9kt
< 1ft
Tuesday
High: 84 °F
WNW 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 24, 2026
Forecast Valid: 5am EDT Jul 24, 2026-6pm EDT Jul 30, 2026

View Nearby Observations

Detailed Forecast

Today

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

Tonight

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

Saturday

Variable winds less than 5 kt becoming SW 5 to 7 kt in the afternoon. Sunny. Waves 1 ft or less.

Saturday Night

WSW wind 5 to 8 kt. Partly cloudy. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming W 5 to 7 kt in the morning. A chance of showers after 2pm. Waves 1 ft or less.

Sunday Night

SW wind around 6 kt becoming SE in the evening. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Waves 1 ft or less.

Monday

SW wind 6 to 9 kt. Showers likely before 8am, then a chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Monday Night

WSW wind around 9 kt. A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Waves 1 ft or less.

Tuesday

WNW wind around 10 kt. A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. 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.