For More Weather Information:

12NM N Port Sanilac MI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 4:24 pm EDT Oct 18, 2026
Forecast Valid: 7pm EDT Oct 18, 2026-6pm EDT Oct 25, 2026

Tonight

SW wind 11 to 15 kt, with gusts as high as 22 kt. Mostly clear. Waves around 1 ft.

Monday

SW wind 5 to 9 kt. Sunny. Waves 1 ft or less.

Monday Night

Variable winds less than 5 kt becoming NE around 6 kt after midnight. Increasing clouds. Waves 1 ft or less.

Tuesday

ENE wind 6 to 9 kt. Mostly cloudy, then gradually becoming sunny. Waves 1 ft or less.

Tuesday Night

NE wind 7 to 10 kt becoming SSE after midnight. Mostly clear. Waves 1 ft or less.

Wednesday

S wind 5 to 7 kt. Sunny. Waves 1 ft or less.

Wednesday Night

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

Thursday

NW wind 6 to 9 kt becoming N in the afternoon. Sunny. Waves 1 ft or less.

Thursday Night

NE wind around 13 kt. Mostly clear. Waves 1 to 2 ft.

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.