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Detroit/Pontiac, MI Local Forecast Office

12NM N Port Sanilac MI

Marine Point Forecast

[NOTICE]

Today
High: 52 °F
SSW 8kt
< 1ft
Tonight
Low: 42 °F
S 10kt
< 1ft
Saturday
High: 58 °F
SSW 16kt
1-2ft
Saturday Night
Low: 39 °F
NW 12kt
1ft
Sunday
High: 46 °F
WNW 8kt
< 1ft
Sunday Night
Low: 38 °F
N 9kt
< 1ft
Monday
High: 42 °F
N 11kt
1ft
Monday Night
Low: 38 °F
N 6kt⇓
< 1ft
Tuesday
High: 46 °F
ESE 9kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:35 am EDT May 8, 2026
Forecast Valid: 11am EDT May 8, 2026-6pm EDT May 14, 2026

View Nearby Observations

Detailed Forecast

Today

SSW wind around 8 kt. Mostly sunny. Waves 1 ft or less.

Tonight

S wind 7 to 10 kt. Partly cloudy. Waves 1 ft or less.

Saturday

SSW wind 12 to 16 kt, with gusts as high as 23 kt. Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. Waves 1 to 2 ft.

Saturday Night

NW wind 9 to 12 kt. Partly cloudy. Waves around 1 ft.

Sunday

WNW wind around 8 kt becoming NE in the afternoon. Sunny. Waves 1 ft or less.

Sunday Night

ENE wind 5 to 9 kt becoming N after midnight. Partly cloudy. Waves 1 ft or less.

Monday

N wind around 11 kt. Sunny. Waves around 1 ft.

Monday Night

N wind around 6 kt becoming variable and less than 5 kt in the evening. Mostly clear. Waves 1 ft or less.

Tuesday

WNW wind 5 to 9 kt becoming ESE in the afternoon. 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.