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Detroit/Pontiac, MI Local Forecast Office

Bay Port MI

Marine Point Forecast

[NOTICE]

This Afternoon
High: 76 °F
WNW 9kt
< 1ft
Tonight
Low: 60 °F
N 8kt
< 1ft
Friday
High: 73 °F
N 6kt⇓
< 1ft
Friday Night
Low: 60 °F
ESE 7kt
< 1ft
Saturday
High: 78 °F
SW 10kt
< 1ft
Saturday Night
Low: 67 °F
S 10kt
< 1ft
Sunday
High: 79 °F
SSW 12kt
< 1ft
Sunday Night
Low: 67 °F
SSW 7kt
< 1ft
Monday
High: 82 °F
S 11kt
< 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 Aug 27, 2026
Forecast Valid: 12pm EDT Aug 27, 2026-6pm EDT Sep 2, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

WNW wind 7 to 9 kt. A slight chance of showers after 5pm. Waves 1 ft or less.

Tonight

N wind 6 to 8 kt. A slight chance of showers before 8pm. Waves 1 ft or less.

Friday

N wind around 6 kt becoming variable and less than 5 kt in the afternoon. Sunny. Waves 1 ft or less.

Friday Night

E wind 5 to 7 kt becoming SSE after midnight. Partly cloudy. Waves 1 ft or less.

Saturday

SW wind 6 to 10 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

S wind 7 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

SSW wind 10 to 12 kt, with gusts as high as 19 kt. A chance of showers after 2pm. Waves 1 ft or less.

Sunday Night

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

Monday

S wind 7 to 11 kt. A chance of showers. Waves 1 ft or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

*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.