National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fog

63°F

17°C

Humidity 94%
Wind Speed Calm
Barometer 29.87 in
Dewpoint 61°F (16°C)
Visibility 0.15 mi
Last update 12 Aug 4:15 am EDT
Extended Forecast for

2 Miles W Marysville MI

Dense Fog Advisory until August 12, 08:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until August 12, 08:00am

    NOW until 8:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 63 °F

    Dense Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 3pm. Widespread dense fog before 8am. Otherwise, partly sunny, with a high near 83. Light south southwest wind. Chance of precipitation is 30%.

    High: 83 °F

    Dense Fog
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 82. Calm wind.

    High: 82 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Overnight
Widespread dense fog. Otherwise, mostly cloudy, with a low around 63. Calm wind.
Wednesday
A chance of showers and thunderstorms, mainly after 3pm. Widespread dense fog before 8am. Otherwise, partly sunny, with a high near 83. Light south southwest wind. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 30%.
Thursday
Increasing clouds, with a high near 82. Calm wind.
Thursday Night
Mostly cloudy, with a low around 62. Calm wind.
Friday
Sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 63.
Sunday
Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 82.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Marysville MI
 42.91°N 82.53°W (Elev. 646 ft)
Last Update:
4:13 am EDT Aug 12, 2026
Forecast Valid:
4am EDT Aug 12, 2026-6pm EDT Aug 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation