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18NM ENE Port Sanilac MI

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 5:24 pm EDT Mar 15, 2026
Forecast Valid: 6pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026

Tonight

SSE wind 25 to 33 kt, with gusts as high as 40 kt. Rain, mainly after 4am. Waves 6 ft building to 10 ft.

Monday

SSW wind around 28 kt. A chance of rain before 3pm, then a slight chance of snow. Waves 8 to 9 ft. occasionally to 12ft.

Monday Night

WNW wind 31 to 34 kt. A chance of snow. Widespread freezing spray. Waves 8 ft building to 11 ft.

Tuesday

WNW wind 20 to 29 kt. Widespread freezing spray. Mostly cloudy. Waves 11 ft subsiding to 7 ft.

Tuesday Night

WNW wind 13 to 17 kt. Widespread freezing spray before 9pm. Mostly cloudy. Waves 3 to 5 ft.

Wednesday

S wind 17 to 23 kt. Mostly cloudy. Waves 3 to 5 ft.

Wednesday Night

S wind 18 to 20 kt. A chance of snow after 2am. Waves around 4 ft.

Thursday

SSW wind 10 to 16 kt becoming W in the afternoon. A chance of rain and snow before 2pm. Waves 1 to 3 ft.

Thursday Night

NW wind 9 to 12 kt. Mostly cloudy. 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.