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Detroit/Pontiac, MI Local Forecast Office

Grosse Ile MI

Marine Point Forecast

[NOTICE]

Today
High: 80 °F
⇑S 6kt
< 1ft
Tonight
Low: 68 °F
Light Wind
< 1ft
Thursday
High: 86 °F
NNW 6kt
< 1ft
Thursday Night
Low: 69 °F
Light Wind
< 1ft
Friday
High: 87 °F
⇑S 6kt
< 1ft
Friday Night
Low: 72 °F
SSE 6kt
< 1ft
Saturday
High: 91 °F
SSW 10kt
< 1ft
Saturday Night
Low: 69 °F
W 7kt
< 1ft
Sunday
High: 87 °F
W 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: 10:24 am EDT Jul 9, 2025
Forecast Valid: 11am EDT Jul 9, 2025-6pm EDT Jul 15, 2025

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Showers and possibly a thunderstorm before 3pm, then showers and thunderstorms likely after 3pm. Waves 1 ft or less.

Tonight

Variable winds 5 kt or less. Showers and thunderstorms likely before 8pm. Waves 1 ft or less.

Thursday

N wind around 6 kt becoming SW in the afternoon. Mostly sunny. Waves 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Friday

Variable winds less than 5 kt becoming S around 6 kt in the afternoon. Partly sunny. Waves 1 ft or less.

Friday Night

SSE wind around 6 kt. Partly cloudy. Waves 1 ft or less.

Saturday

SSW wind 5 to 10 kt. Showers likely and possibly a thunderstorm after 2pm. Waves 1 ft or less.

Saturday Night

W wind around 7 kt. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Waves 1 ft or less.

Sunday

W wind 5 to 7 kt. A chance of showers. 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.