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.

Fair

84°F

29°C

Humidity 40%
Wind Speed W 17 G 23 mph
Barometer 29.73 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 13 Oct 5:35 pm EDT
Extended Forecast for

Marysville MI

  • Tonight

    Tonight: A chance of rain, mainly after 4am. Increasing clouds, with a low around 56. West wind 10 to 15 mph becoming light northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 30%.

    Low: 56 °F

    Mostly Clear
    then Chance
    Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 65. Light north northwest wind becoming north 5 to 9 mph in the morning.

    High: 65 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 46. North wind 5 to 7 mph.

    Low: 46 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of rain after 2pm. Mostly cloudy, with a high near 64. East southeast wind 5 to 7 mph. Chance of precipitation is 40%.

    High: 64 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain, mainly after 8pm. Low around 48. East southeast wind around 6 mph becoming calm. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Rain

  • Friday

    Friday: Rain likely, mainly after 2pm. Mostly cloudy, with a high near 60. Breezy. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely
    and Breezy

  • Friday Night

    Friday Night: Rain likely before 8pm. Partly cloudy, with a low around 35. Breezy. Chance of precipitation is 60%.

    Low: 35 °F

    Breezy. Rain
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain, mainly after 4am. Increasing clouds, with a low around 56. West wind 10 to 15 mph becoming light northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 65. Light north northwest wind becoming north 5 to 9 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 46. North wind 5 to 7 mph.
Thursday
A chance of rain after 2pm. Mostly cloudy, with a high near 64. East southeast wind 5 to 7 mph. Chance of precipitation is 40%.
Thursday Night
Rain, mainly after 8pm. Low around 48. East southeast wind around 6 mph becoming calm. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 60. Breezy. Chance of precipitation is 60%.
Friday Night
Rain likely before 8pm. Partly cloudy, with a low around 35. Breezy. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 61.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Partly sunny, with a high near 64.
Monday Night
Mostly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marysville MI
 42.91°N 82.47°W (Elev. 587 ft)
Last Update:
4:24 pm EDT Oct 13, 2026
Forecast Valid:
5pm EDT Oct 13, 2026-6pm EDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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