Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Fog/Mist

45°F

7°C

Humidity 93%
Wind Speed S 6 mph
Barometer 29.95 in
Dewpoint 43°F (6°C)
Visibility 2.00 mi
Wind Chill42°F (6°C)
Last update 6 Mar 9:15 pm EST
Extended Forecast for

3 Miles W Marysville MI

Dense Fog Advisory until March 7, 01:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 7, 01:00am

    NOW until 1:00am Sat

    Dense Fog Advisory

  • Tonight

    Low: 48 °F

    Scattered
    T-storms and
    Dense Fog

  • Saturday

    Saturday: Showers and possibly a thunderstorm, mainly before 2pm, then scattered showers and thunderstorms after 2pm.  Patchy fog before 9am. High near 66. Breezy, with a south southwest wind 13 to 18 mph, with gusts as high as 32 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35. West northwest wind 8 to 14 mph, with gusts as high as 26 mph.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 55. Southwest wind 8 to 15 mph, with gusts as high as 28 mph.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 40. South southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of rain after 1pm.  Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Tonight
Scattered showers and thunderstorms before 4am, then isolated showers. Widespread dense fog, mainly before 10pm. Otherwise, mostly cloudy, with a temperature rising to around 56 by 4am. South southwest wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Saturday
Showers and possibly a thunderstorm, mainly before 2pm, then scattered showers and thunderstorms after 2pm. Patchy fog before 9am. High near 66. Breezy, with a south southwest wind 13 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 35. West northwest wind 8 to 14 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 55. Southwest wind 8 to 15 mph, with gusts as high as 28 mph.
Sunday Night
Increasing clouds, with a low around 40. South southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 38.
Tuesday
A chance of rain after 1pm. Partly sunny, with a high near 52.
Tuesday Night
Rain. Mostly cloudy, with a low around 33.
Wednesday
Rain likely, mainly before 1pm. Cloudy, with a high near 43.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 24.
Thursday
Sunny, with a high near 40.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 49.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Marysville MI
 42.91°N 82.53°W (Elev. 646 ft)
3:35 pm EST Mar 6, 2026
9pm EST Mar 6, 2026-6pm EDT Mar 13, 2026
 
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Additional Resources

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