Heavy Rains Expected to Impact Parts of the Eastern U.S.

A strong cold front will produce heavy rain will create mainly localized areas of flash flooding to the Great Lakes and Ohio Valley. There is another flash flood threat in the parts of the Southeast and Southern Appalachians.

For More Weather Information:

Detroit/Pontiac, MI Local Forecast Office

6NM N Port Huron MI

Marine Point Forecast

  • Today


    S 19kt

    High: 73 °F

    Small Craft Advisory
    Small Craft Advisory

  • Tonight

    Heavy Rain

    Winds IncreasingN 24kt
    Waves Building3ft

    Low: 56 °F

  • Wednesday


    N 31kt

    High: 60 °FFalling Temperatures

  • Wednesday


    NNE 34kt

    Low: 55 °FRising Temperatures

  • Thursday

    Chance Showers

    SSW 13kt

    High: 58 °FFalling Temperatures

  • Thursday

    Chance Showers

    SW 13kt

    Low: 54 °FRising Temperatures

  • Friday


    WSW 12kt

    High: 65 °FFalling Temperatures

  • Friday

    Chance Showers

    SSW 12kt
    < 1ft

    Low: 57 °FRising Temperatures

  • Saturday

    Chance Showers

    SW 10kt
    < 1ft

    High: 62 °FFalling Temperatures

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:24 am EDT Sep 21, 2021
Forecast Valid: 5am EDT Sep 21, 2021-6pm EDT Sep 27, 2021

View Nearby Observations

Detailed Forecast

S wind 13 to 19 kt. A slight chance of showers and thunderstorms before 2pm, then a chance of showers between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. Waves 1 to 2 ft.
S wind 10 to 15 kt becoming N 19 to 24 kt in the evening. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Waves 1 ft or less building to 3 ft.
N wind 27 to 31 kt, with gusts as high as 38 kt. Showers. Waves 5 to 6 ft. occasionally to 8ft.
Wednesday Night
NNE wind 29 to 34 kt, with gusts as high as 40 kt. Showers. Waves around 5 ft.
NNW wind around 13 kt becoming SSW in the morning. Winds could gust as high as 22 kt. A chance of showers. Waves 3 to 4 ft.
Thursday Night
SW wind around 13 kt, with gusts as high as 21 kt. A chance of showers before 2am. Waves 1 to 2 ft.
WSW wind around 12 kt. Sunny. Waves around 1 ft.
Friday Night
SSW wind 10 to 12 kt. A chance of showers. Waves 1 ft or less.
SW wind around 10 kt. A chance of showers. Waves 1 ft or less.

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


  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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Point Forecast: 43.08°N 82.42°W
Last Update: 4:24 am EDT Sep 21, 2021
Forecast Valid: 5am EDT Sep 21, 2021-6pm EDT Sep 27, 2021
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