Hazardous Weather Conditions

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Detroit/Pontiac, MI Local Forecast Office

4NM E Port Sanilac MI

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind 13 to 16 km/h. A chance of showers and thunderstorms, mainly before 11pm.   Waves 1 m or less.

      Low: 21 °C

      S 16km/h
      < 1m

    • Saturday

      Saturday:S wind 16 to 24 km/h, with gusts as high as 32 km/h. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.   Waves 1 m or less.

      High: 26 °C

      S 24km/h
      < 1m

    • Saturday Night

      Saturday Night:WSW wind 16 to 18 km/h. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am.   Waves 1 m or less.

      Low: 21 °C

      WSW 18km/h
      < 1m

    • Sunday

      Sunday:WNW wind 13 to 16 km/h. Mostly sunny. Waves 1 m or less.

      High: 23 °C

      WNW 16km/h
      < 1m

    • Sunday Night

      Sunday Night:SSW wind 10 to 13 km/h becoming W after midnight. Partly cloudy. Waves 1 m or less.

      Low: 19 °C

      WSW 13km/h
      < 1m

    • Monday

      Monday:W wind 11 to 13 km/h becoming SSW in the afternoon. Sunny. Waves 1 m or less.

      High: 25 °C

      W 13km/h
      < 1m

    • Monday Night

      Monday Night:SW wind 11 to 14 km/h. Mostly clear. Waves 1 m or less.

      Low: 20 °C

      SW 14km/h
      < 1m

    • Tuesday

      Tuesday:W wind 10 to 13 km/h becoming SE in the afternoon. Sunny. Waves 1 m or less.

      High: 24 °C

      SE 13km/h
      < 1m

    • Tuesday Night

      Tuesday Night:SE wind around 16 km/h becoming S after midnight. Mostly cloudy. Waves 1 m or less.

      Low: 21 °C

      SE 16km/h
      < 1m


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:13 pm EDT Jul 11, 2025
Forecast Valid: 9pm EDT Jul 11, 2025-6pm EDT Jul 18, 2025

View Nearby Observations

Detailed Forecast

Tonight
S wind 13 to 16 km/h. A chance of showers and thunderstorms, mainly before 11pm. Waves 1 m or less.
Saturday
S wind 16 to 24 km/h, with gusts as high as 32 km/h. A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Waves 1 m or less.
Saturday Night
WSW wind 16 to 18 km/h. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Waves 1 m or less.
Sunday
WNW wind 13 to 16 km/h. Mostly sunny. Waves 1 m or less.
Sunday Night
SSW wind 10 to 13 km/h becoming W after midnight. Partly cloudy. Waves 1 m or less.
Monday
W wind 11 to 13 km/h becoming SSW in the afternoon. Sunny. Waves 1 m or less.
Monday Night
SW wind 11 to 14 km/h. Mostly clear. Waves 1 m or less.
Tuesday
W wind 10 to 13 km/h becoming SE in the afternoon. Sunny. Waves 1 m or less.
Tuesday Night
SE wind around 16 km/h becoming S after midnight. Mostly cloudy. Waves 1 m or less.

See Lake Huron Open Lake Forecast for days 3 through 5.


*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 43.43°N 82.46°W
Last Update: 5:13 pm EDT Jul 11, 2025
Forecast Valid: 9pm EDT Jul 11, 2025-6pm EDT Jul 18, 2025
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