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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: 4:24 am EDT Mar 23, 2026
Forecast Valid: 5am EDT Mar 23, 2026-6pm EDT Mar 29, 2026

Today

NNW wind around 21 kt. A slight chance of snow showers after 10am. Waves 5 to 6 ft. occasionally to 8ft.

Tonight

NNW wind 12 to 17 kt becoming WNW 5 to 10 kt after midnight. Partly cloudy. Waves 5 ft subsiding to 2 ft.

Tuesday

SSW wind 13 to 16 kt. Increasing clouds. Waves 2 to 3 ft.

Tuesday Night

S wind 9 to 12 kt. Mostly cloudy. Waves around 1 ft.

Wednesday

S wind around 15 kt. Mostly cloudy. Waves around 2 ft.

Wednesday Night

S wind around 12 kt. Mostly cloudy. Waves 1 to 2 ft.

Thursday

S wind around 13 kt. A chance of rain after 2pm. Waves 1 to 2 ft.

Thursday Night

N wind 17 to 22 kt increasing to 23 to 28 kt after midnight. A chance of rain and snow before 2am. Waves 2 ft building to 8 ft.

Friday

N wind 21 to 28 kt. Partly sunny. Waves 10 ft subsiding to 7 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.