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: 8:49 am EDT Jul 17, 2025
Forecast Valid: 12pm EDT Jul 17, 2025-6pm EDT Jul 23, 2025

This Afternoon

NNW wind 16 to 18 kt, with gusts as high as 24 kt. A slight chance of showers after 2pm. Waves 2 to 3 ft.

Tonight

NNE wind 9 to 16 kt. Mostly cloudy, then gradually becoming mostly clear. Waves 2 to 3 ft.

Friday

ENE wind 5 to 7 kt becoming ESE in the afternoon. Sunny. Waves 1 ft or less.

Friday Night

ESE wind 5 to 7 kt becoming S after midnight. Partly cloudy. Waves 1 ft or less.

Saturday

S wind around 9 kt. Showers likely and possibly a thunderstorm, mainly after 2pm. Waves 1 ft or less.

Saturday Night

NW wind around 9 kt. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Waves 1 ft or less.

Sunday

N wind around 10 kt. Mostly sunny. Waves around 1 ft.

Sunday Night

N wind around 8 kt. Mostly clear. Waves 1 ft or less.

Monday

E wind around 8 kt. Mostly sunny. 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.