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

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Partly Cloudy

43°F

6°C

Humidity 42%
Wind Speed SW 6 mph
Barometer 30.32 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 24 Mar 4:55 pm EDT
Extended Forecast for

Marysville MI

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Southwest wind around 6 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 51. Light south southeast wind becoming south 5 to 9 mph in the morning.

    High: 51 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. Southwest wind around 7 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain likely after 2pm. Mostly cloudy, with a high near 64. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Partly Sunny
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before 8pm. Mostly cloudy, with a low around 27. North wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 27 °F

    Rain Likely

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 32.

    High: 32 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 30. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 51. Light south southeast wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 44. Southwest wind around 7 mph.
Thursday
Rain likely after 2pm. Mostly cloudy, with a high near 64. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely, mainly before 8pm. Mostly cloudy, with a low around 27. North wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 32.
Friday Night
Mostly clear, with a low around 21.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Partly sunny, with a high near 51.
Sunday Night
Mostly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 57.
Monday Night
A chance of rain. Mostly cloudy, with a low around 40.
Tuesday
A chance of rain. Mostly cloudy, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marysville MI
 42.88°N 82.47°W (Elev. 577 ft)
Last Update:
4:24 pm EDT Mar 24, 2026
Forecast Valid:
5pm EDT Mar 24, 2026-6pm EDT Mar 31, 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