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.

Fog/Mist

28°F

-2°C

Humidity 86%
Wind Speed Calm
Barometer 30.20 in
Dewpoint 25°F (-4°C)
Visibility 3.00 mi
Last update 3 Mar 10:15 pm EST
Extended Forecast for

3 Miles NE Casco MI

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Areas of fog before 8am. Otherwise, mostly sunny, with a high near 48. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 48 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 33. Calm wind. Chance of precipitation is 30%.

    Low: 33 °F

    Partly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain. High near 46. East wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain before 1am. Cloudy, with a low around 38. East northeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 50%.

    Low: 38 °F

    Chance Rain

  • Friday

    Friday: A chance of rain after 1pm. Mostly cloudy, with a high near 55. Chance of precipitation is 30%.

    High: 55 °F

    Cloudy then
    Chance Rain

  • Friday Night

    Friday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Rain Likely

  • Saturday

    Saturday: Rain, mainly before 1pm. Mostly cloudy, with a high near 63.

    High: 63 °F

    Rain

  • Saturday Night

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

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 26. Calm wind.
Wednesday
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 48. Calm wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 33. Calm wind. Chance of precipitation is 30%.
Thursday
Rain. High near 46. East wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
A chance of rain before 1am. Cloudy, with a low around 38. East northeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 50%.
Friday
A chance of rain after 1pm. Mostly cloudy, with a high near 55. Chance of precipitation is 30%.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Saturday
Rain, mainly before 1pm. Mostly cloudy, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 44.
Tuesday
A chance of rain. Mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Casco MI
 42.81°N 82.63°W (Elev. 630 ft)
Last Update:
6:35 pm EST Mar 3, 2026
Forecast Valid:
10pm EST Mar 3, 2026-6pm EDT Mar 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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