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.

Overcast

46°F

8°C

Humidity 71%
Wind Speed S 12 mph
Barometer 29.71 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 28 Feb 1:15 am EST
Extended Forecast for

3 Miles W Marysville MI

  • Overnight

    Overnight: Partly cloudy, with a low around 28. West northwest wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 35. Northwest wind around 6 mph becoming north northeast in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Snow likely between 7pm and 1am. Mostly cloudy, with a low around 17. Northeast wind around 6 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 17 °F

    Snow Likely

  • Sunday

    Sunday: Partly sunny, with a high near 24. North wind 6 to 8 mph.

    High: 24 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 9. Calm wind.

    Low: 9 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 30.

    High: 30 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 20.

    Low: 20 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A chance of rain and snow. Mostly cloudy, with a high near 40.

    High: 40 °F

    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 28. West northwest wind 7 to 9 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 35. Northwest wind around 6 mph becoming north northeast in the afternoon.
Saturday Night
Snow likely between 7pm and 1am. Mostly cloudy, with a low around 17. Northeast wind around 6 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday
Partly sunny, with a high near 24. North wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 9. Calm wind.
Monday
Partly sunny, then gradually becoming sunny, with a high near 30.
Monday Night
Increasing clouds, with a low around 20.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 40.
Tuesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 44.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 29.
Thursday
Rain likely. Mostly cloudy, with a high near 47.
Thursday Night
Rain likely. Cloudy, with a low around 34.
Friday
A chance of rain. Cloudy, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Marysville MI
 42.91°N 82.53°W (Elev. 646 ft)
Last Update:
3:36 pm EST Feb 27, 2026
Forecast Valid:
1am EST Feb 28, 2026-6pm EST Mar 6, 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