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Detroit/Pontiac, MI Local Forecast Office

12NM N Port Sanilac MI

Marine Point Forecast

[NOTICE]

Today
High: 57 °F
WSW 15kt
1-2ft
Tonight
Low: 44 °F
SSE 9kt
< 1ft
Wednesday
High: 51 °F
SSW 10kt
< 1ft
Wednesday Night
Low: 48 °F
SSW 9kt
< 1ft
Thursday
High: 54 °F
SW 12kt
1ft
Thursday Night
Low: 42 °F
WNW 10kt
< 1ft
Friday
High: 48 °F
N 9kt
1-2ft
Friday Night
Low: 43 °F
SSE 13kt
1-2ft
Saturday
High: 58 °F
SSE 19kt
4-5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:25 am EDT Apr 14, 2026
Forecast Valid: 5am EDT Apr 14, 2026-6pm EDT Apr 20, 2026

View Nearby Observations

Detailed Forecast

Today

S wind 13 to 15 kt becoming NNW in the afternoon. Winds could gust as high as 21 kt. Showers and thunderstorms, mainly before 9am. Patchy dense fog before 10am. Waves 1 to 2 ft.

Tonight

E wind 7 to 9 kt becoming SSW after midnight. Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Waves 1 ft or less.

Wednesday

SSW wind 8 to 10 kt. Showers likely, mainly after 2pm. Waves 1 ft or less.

Wednesday Night

SSW wind 7 to 9 kt. Showers and possibly a thunderstorm. Waves 1 ft or less.

Thursday

SW wind around 12 kt. Showers likely. Waves around 1 ft.

Thursday Night

WNW wind 8 to 10 kt. A chance of showers. Waves 1 ft or less.

Friday

N wind around 9 kt. Partly sunny. Waves 1 to 2 ft.

Friday Night

E wind 7 to 13 kt becoming SSE after midnight. Mostly cloudy. Waves 1 to 2 ft.

Saturday

SSE wind around 19 kt, with gusts as high as 26 kt. Showers. Waves 4 to 5 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.