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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 64 °F
N 11kt
< 1ft
Tonight
Low: 44 °F
N 6kt⇓
< 1ft
Friday
High: 68 °F
⇑SSW 9kt
< 1ft
Friday Night
Low: 55 °F
S 8kt
< 1ft
Saturday
High: 80 °F
SW 11kt
< 1ft
Saturday Night
Low: 62 °F
SW 8kt
< 1ft
Sunday
High: 79 °F
⇑SSE 6kt
< 1ft
Sunday Night
Low: 61 °F
SE 7kt
< 1ft
Monday
High: 87 °F
SSW 14kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:36 am EDT May 14, 2026
Forecast Valid: 10am EDT May 14, 2026-6pm EDT May 20, 2026

View Nearby Observations

Detailed Forecast

Today

N wind around 11 kt. Mostly sunny. Waves 1 ft or less.

Tonight

N 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 5 to 9 kt in the morning. Partly sunny. Waves 1 ft or less.

Friday Night

S wind around 8 kt. Partly cloudy. Waves 1 ft or less.

Saturday

SW wind 9 to 11 kt. A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Saturday Night

SW wind 6 to 8 kt. Showers likely and possibly a thunderstorm. Waves 1 ft or less.

Sunday

Variable winds less than 5 kt becoming SSE around 6 kt in the afternoon. A chance of showers before 8am, then a chance of showers after 2pm. Waves 1 ft or less.

Sunday Night

SE wind around 7 kt. A chance of showers. Waves 1 ft or less.

Monday

SSW wind 7 to 14 kt, with gusts as high as 20 kt. 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.