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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 54 °F
⇑S 9kt
< 1ft
Tonight
Low: 46 °F
SW 9kt
< 1ft
Thursday
High: 67 °F
SSW 10kt
< 1ft
Thursday Night
Low: 30 °F
N 12kt
< 1ft
Friday
High: 40 °F
N 11kt
< 1ft
Friday Night
Low: 26 °F
N 7kt⇓
< 1ft
Saturday
High: 47 °F
W 11kt
< 1ft
Saturday Night
Low: 31 °F
W 9kt
< 1ft
Sunday
High: 54 °F
S 9kt
< 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 Mar 25, 2026
Forecast Valid: 7am EDT Mar 25, 2026-6pm EDT Mar 31, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. Mostly cloudy. Waves 1 ft or less.

Tonight

SW wind around 9 kt. Mostly cloudy. Waves 1 ft or less.

Thursday

SSW wind 7 to 10 kt. Showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Thursday Night

N wind around 12 kt, with gusts as high as 19 kt. Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Waves 1 ft or less.

Friday

N wind 9 to 11 kt. Mostly cloudy, then gradually becoming sunny. Waves 1 ft or less.

Friday Night

N wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Waves 1 ft or less.

Saturday

W wind 5 to 11 kt, with gusts as high as 18 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

W wind 6 to 9 kt. Partly cloudy. Waves 1 ft or less.

Sunday

S wind 6 to 9 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.