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Detroit/Pontiac, MI Local Forecast Office

3NM N Grosse Ile MI

Marine Point Forecast

[NOTICE]

Overnight
Low: 75 °F
NNE 7kt
< 1ft
Thursday
High: 92 °F
Light Wind
< 1ft
Thursday Night
Low: 72 °F
E 6kt⇓
< 1ft
Friday
High: 89 °F
⇑S 8kt
< 1ft
Friday Night
Low: 74 °F
S 8kt
< 1ft
Saturday
High: 90 °F
WSW 13kt
< 1ft
Saturday Night
Low: 68 °F
WNW 12kt
< 1ft
Sunday
High: 83 °F
N 8kt
< 1ft
Sunday Night
Low: 67 °F
ESE 8kt⇓
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:24 pm EDT Jul 15, 2026
Forecast Valid: 12am EDT Jul 16, 2026-6pm EDT Jul 22, 2026

View Nearby Observations

Detailed Forecast

Overnight

NNE wind around 7 kt. Widespread smoke. Waves 1 ft or less.

Thursday

Variable winds 5 kt or less. Widespread smoke. Waves 1 ft or less.

Thursday Night

E wind around 6 kt becoming variable and less than 5 kt after midnight. Widespread smoke, mainly between 11pm and midnight. Waves 1 ft or less.

Friday

Variable winds less than 5 kt becoming S 5 to 8 kt in the morning. Increasing clouds. Waves 1 ft or less.

Friday Night

S wind 6 to 8 kt. A chance of showers between 8pm and 2am. Waves 1 ft or less.

Saturday

WSW wind 10 to 13 kt, with gusts as high as 20 kt. A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Saturday Night

WNW wind 8 to 12 kt becoming N after midnight. Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Waves 1 ft or less.

Sunday

N wind around 8 kt becoming ENE in the afternoon. Mostly sunny. Waves 1 ft or less.

Sunday Night

ESE wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Mostly clear. 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.