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.

Light Snow

19°F

-7°C

Humidity 68%
Wind Speed SW 3 mph
Barometer 29.77 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 2 Jan 3:15 am EST
Extended Forecast for

3 Miles NE Casco MI

  • Overnight

    Overnight: A chance of snow or flurries before 4am, then a chance of flurries with a slight chance of snow after 4am. Mostly cloudy, with a low around 16. West wind around 6 mph. Chance of precipitation is 30%.

    Low: 16 °F

    Chance Snow

  • Friday

    Friday: A chance of flurries before 1pm. Mostly cloudy, with a high near 24. West wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 24 °F

    Chance
    Flurries

  • Friday Night

    Friday Night: Partly cloudy, with a low around 13. West wind 3 to 5 mph.

    Low: 13 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 26. West wind 3 to 6 mph.

    High: 26 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18. Calm wind becoming west around 5 mph after midnight.

    Low: 18 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of snow after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.

    Low: 18 °F

    Mostly Cloudy
    then Chance
    Snow

  • Monday

    Monday: A chance of snow before 1pm. Mostly cloudy, with a high near 34.

    High: 34 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow or flurries before 4am, then a chance of flurries with a slight chance of snow after 4am. Mostly cloudy, with a low around 16. West wind around 6 mph. Chance of precipitation is 30%.
Friday
A chance of flurries before 1pm. Mostly cloudy, with a high near 24. West wind 7 to 11 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 13. West wind 3 to 5 mph.
Saturday
Mostly cloudy, with a high near 26. West wind 3 to 6 mph.
Saturday Night
Mostly cloudy, with a low around 18. Calm wind becoming west around 5 mph after midnight.
Sunday
Partly sunny, with a high near 28.
Sunday Night
A chance of snow after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.
Monday
A chance of snow before 1pm. Mostly cloudy, with a high near 34.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
A chance of rain after 1pm. Mostly cloudy, with a high near 39.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 30.
Wednesday
Mostly cloudy, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Mostly cloudy, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Casco MI
 42.81°N 82.63°W (Elev. 630 ft)
Last Update:
3:25 am EST Jan 2, 2026
Forecast Valid:
3am EST Jan 2, 2026-6pm EST Jan 8, 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