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

73°F

23°C

Humidity 57%
Wind Speed NE 8 mph
Barometer 30.10 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 6 Sep 5:55 pm EDT
Extended Forecast for

Marysville MI

  • Tonight

    Tonight: Mostly clear, with a low around 56. North northeast wind 5 to 9 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear

  • Labor Day

    Labor Day: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 77 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Calm wind becoming south 5 to 8 mph in the morning.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 68. South wind around 7 mph.

    Low: 68 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly between 8am and 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 56. North northeast wind 5 to 9 mph becoming calm in the evening.
Labor Day
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming northeast around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 81. Calm wind becoming south 5 to 8 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 68. South wind around 7 mph.
Wednesday
Showers likely, mainly between 8am and 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Wednesday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
A chance of showers. Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marysville MI
 42.91°N 82.5°W (Elev. 627 ft)
Last Update:
4:24 pm EDT Sep 6, 2026
Forecast Valid:
6pm EDT Sep 6, 2026-6pm EDT Sep 13, 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