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Detroit/Pontiac, MI Local Forecast Office

6NM NNW Bay Port MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 32 °F
NNW 21kt
4ft

Gale Warning
Tonight
Low: 19 °F
NNW 21kt
2-4ft

Gale Warning
Thursday
High: 28 °F
W 17kt
1-2ft
Thursday Night
Low: 18 °F
W 13kt
1ft
Friday
High: 25 °F
WSW 10kt
< 1ft
Friday Night
Low: 18 °F
⇑SW 24kt
1-2ft
Saturday
High: 21 °F
W 26kt
3ft
Saturday Night
Low: 14 °F
W 24kt
2-3ft
Sunday
High: 20 °F
NW 21kt
2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:25 pm EST Dec 10, 2025
Forecast Valid: 3pm EST Dec 10, 2025-6pm EST Dec 16, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

NNW wind around 21 kt, with gusts as high as 30 kt. A slight chance of snow before 4pm. Waves around 4 ft.

Tonight

NNW wind 12 to 21 kt becoming W after midnight. Winds could gust as high as 28 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 2 to 4 ft.

Thursday

W wind 15 to 17 kt. Mostly cloudy. Waves 1 to 2 ft.

Thursday Night

W wind 9 to 13 kt. Mostly cloudy. Waves around 1 ft.

Friday

WSW wind 8 to 10 kt. Partly sunny. Waves 1 ft or less.

Friday Night

SW wind 12 to 17 kt increasing to 19 to 24 kt after midnight. A chance of snow showers before 1am. Waves 1 to 2 ft.

Saturday

W wind 24 to 26 kt, with gusts as high as 32 kt. Mostly cloudy. Waves around 3 ft.

Saturday Night

W wind 21 to 24 kt. Mostly cloudy. Waves 2 to 3 ft.

Sunday

NW wind 18 to 21 kt. Partly sunny. Waves around 2 ft.

*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.