National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

Overcast

72°F

22°C

Humidity 78%
Wind Speed N 8 mph
Barometer 30.04 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 Aug 4:55 pm EDT
Extended Forecast for

Casco MI

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. Northeast wind 5 to 14 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 78. Northeast wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. North northeast wind 5 to 7 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. Light and variable wind.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Light south southwest wind.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 59. Northeast wind 5 to 14 mph, with gusts as high as 22 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 78. Northeast wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 58. North northeast wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 81. Light and variable wind.
Friday Night
Partly cloudy, with a low around 62. Light south southwest wind.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 54.
Monday
A chance of showers after 2pm. Mostly sunny, with a high near 70.
Monday Night
A chance of showers. Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Casco MI
 42.74°N 82.67°W (Elev. 630 ft)
Last Update:
4:24 pm EDT Aug 20, 2025
Forecast Valid:
5pm EDT Aug 20, 2025-6pm EDT Aug 27, 2025
 
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