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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 Apr 20, 2026
Forecast Valid: 9am EDT Apr 20, 2026-6pm EDT Apr 26, 2026

Today

NNW wind 8 to 14 kt. Mostly sunny. Waves 5 ft subsiding to 2 ft.

Tonight

S wind 9 to 19 kt. Increasing clouds. Waves 1 to 3 ft.

Tuesday

S wind 14 to 22 kt. A chance of sprinkles before 11am. Waves 3 to 5 ft.

Tuesday Night

S wind around 10 kt becoming N after midnight. Partly cloudy. Waves 1 to 2 ft.

Wednesday

N wind around 9 kt. Sunny. Waves around 1 ft.

Wednesday Night

N wind around 6 kt becoming SE after midnight. Mostly clear. Waves 1 ft or less.

Thursday

SSE wind around 9 kt. Mostly sunny. Waves around 1 ft.

Thursday Night

SSE wind 13 to 15 kt. Partly cloudy. Waves 1 to 3 ft.

Friday

SSE wind 15 to 19 kt. A chance of showers. Waves 3 to 4 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.