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

66°F

19°C

Humidity 73%
Wind Speed N 5 mph
Barometer 30.34 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Sep 5:15 pm EDT
Extended Forecast for

3 Miles NE Casco MI

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 60. North northeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 75. North wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. North northeast wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 73. North northeast wind 5 to 8 mph.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55. North northeast wind 3 to 6 mph.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers after 8am. High near 68. Chance of precipitation is 90%.

    High: 68 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 69.

    High: 69 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 60. North northeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.
Thursday
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 75. North wind 3 to 6 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 54. North northeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 73. North northeast wind 5 to 8 mph.
Friday Night
Mostly cloudy, with a low around 55. North northeast wind 3 to 6 mph.
Saturday
Showers after 8am. High near 68. Chance of precipitation is 90%.
Saturday Night
Showers. Low around 56. Chance of precipitation is 80%.
Sunday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 69.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
Mostly cloudy, with a high near 65.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52.
Tuesday
A chance of showers. Partly sunny, with a high near 69.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 56.
Wednesday
Mostly cloudy, with a high near 71.
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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:
4:24 pm EDT Sep 16, 2026
Forecast Valid:
5pm EDT Sep 16, 2026-6pm EDT Sep 23, 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