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.

Fair

23°C

73°F

Humidity 41%
Wind Speed NE 15 km/h
Barometer 30.02 in
Dewpoint 9°C (48°F)
Visibility 16 km
Last update 3 Jul 6:36 pm EDT
Extended Forecast for

Casco MI

  • Tonight

    Tonight: Mostly clear, with a low around 15. Northeast wind 5 to 14 km/h.

    Low: 15 °C

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 28. East wind 5 to 10 km/h becoming south in the afternoon.

    High: 28 °C

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19. South southeast wind 8 to 11 km/h.

    Low: 19 °C

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 33. South southwest wind 8 to 14 km/h.

    High: 33 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23. South wind 11 to 13 km/h.

    Low: 23 °C

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 33. Chance of precipitation is 40%.

    High: 33 °C

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.

    Low: 19 °C

    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 2pm. Mostly cloudy, with a high near 26.

    High: 26 °C

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17.

    Low: 17 °C

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 15. Northeast wind 5 to 14 km/h.
Independence Day
Sunny, with a high near 28. East wind 5 to 10 km/h becoming south in the afternoon.
Friday Night
Partly cloudy, with a low around 19. South southeast wind 8 to 11 km/h.
Saturday
Mostly sunny, with a high near 33. South southwest wind 8 to 14 km/h.
Saturday Night
Partly cloudy, with a low around 23. South wind 11 to 13 km/h.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 33. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms before 2pm. Mostly cloudy, with a high near 26.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Partly cloudy, with a low around 17.
Wednesday
Mostly cloudy, with a high near 28.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
A chance of showers. Mostly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Casco MI
 42.77°N 82.66°W (Elev. 636 m)
Last Update:
5:13 pm EDT Jul 3, 2025
Forecast Valid:
6pm EDT Jul 3, 2025-6pm EDT Jul 10, 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