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

70°F

21°C

Humidity 83%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 6 Aug 3:16 am EDT
Extended Forecast for

Saint Clair MI

  • Overnight

    Overnight: A chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 84 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers before 1pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 85. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 40%.

    High: 85 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 67. South southwest wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers after 5pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers before 8pm. Mostly clear, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers, with thunderstorms also possible after 8pm. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.
Friday
A chance of showers before 1pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 85. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 67. South southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers after 5pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Saturday Night
A chance of showers before 8pm. Mostly clear, with a low around 62. Chance of precipitation is 30%.
Sunday
A chance of showers after 2pm. Mostly sunny, with a high near 85.
Sunday Night
A chance of showers, with thunderstorms also possible after 8pm. Mostly cloudy, with a low around 66.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84.
Monday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 66.
Tuesday
A chance of showers. Partly sunny, with a high near 81.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Clair MI
 42.82°N 82.48°W (Elev. 577 ft)
Last Update:
2:24 am EDT Aug 6, 2026
Forecast Valid:
3am EDT Aug 6, 2026-6pm EDT Aug 12, 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