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Detroit/Pontiac, MI Local Forecast Office

Bay Port MI

Marine Point Forecast

[NOTICE]

Overnight
Low: 55 °F
Light Wind
< 1ft
Friday
High: 73 °F
Light Wind
< 1ft
Friday Night
Low: 57 °F
⇑SSE 6kt
< 1ft
Saturday
High: 81 °F
SW 11kt
< 1ft
Saturday Night
Low: 65 °F
SSW 6kt
< 1ft
Sunday
High: 83 °F
SSW 10kt
< 1ft
Sunday Night
Low: 68 °F
SSE 7kt
< 1ft
Monday
High: 83 °F
SW 11kt
< 1ft
Monday Night
Low: 70 °F
SSW 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: 4:24 pm EDT Aug 27, 2026
Forecast Valid: 12am EDT Aug 28, 2026-6pm EDT Sep 3, 2026

View Nearby Observations

Detailed Forecast

Overnight

Variable winds 5 kt or less. Mostly clear. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Friday Night

Variable winds less than 5 kt becoming SSE around 6 kt in the evening. Partly cloudy. Waves 1 ft or less.

Saturday

SW wind 7 to 11 kt, with gusts as high as 18 kt. Mostly sunny. Waves 1 ft or less.

Saturday Night

SSW wind around 6 kt. Mostly cloudy. Waves 1 ft or less.

Sunday

SSW wind 7 to 10 kt. A chance of showers after 2pm. Waves 1 ft or less.

Sunday Night

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

Monday

SW wind 8 to 11 kt. A chance of showers. Waves 1 ft or less.

Monday Night

SSW wind 6 to 8 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.