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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Casco MI

  • Today

    Today: Sunny, with a high near 61. West northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. West northwest wind around 5 mph becoming calm after midnight.

    Low: 35 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: A chance of rain between 3pm and 5pm. Mostly cloudy, with a high near 52. Light and variable wind. Chance of precipitation is 30%.

    High: 52 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain after 7pm. Mostly cloudy, with a low around 38. North northeast wind 3 to 7 mph. Chance of precipitation is 50%.

    Low: 38 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 47. North wind 9 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.

    Low: 30 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Friday

    Friday: Snow likely before 7am, then rain likely. Mostly cloudy, with a high near 42. Chance of precipitation is 70%.

    High: 42 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Friday Night

    Friday Night: A chance of rain, mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 61. West northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 35. West northwest wind around 5 mph becoming calm after midnight.
Veterans Day
A chance of rain between 3pm and 5pm. Mostly cloudy, with a high near 52. Light and variable wind. Chance of precipitation is 30%.
Wednesday Night
A chance of rain after 7pm. Mostly cloudy, with a low around 38. North northeast wind 3 to 7 mph. Chance of precipitation is 50%.
Thursday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 47. North wind 9 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Friday
Snow likely before 7am, then rain likely. Mostly cloudy, with a high near 42. Chance of precipitation is 70%.
Friday Night
A chance of rain, mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 29.
Saturday
Partly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Partly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Casco MI
 42.77°N 82.66°W (Elev. 636 ft)
Last Update:
4:35 am EST Nov 10, 2026
Forecast Valid:
6am EST Nov 10, 2026-6pm EST Nov 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation