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.

Fair

43°F

6°C

Humidity 71%
Wind Speed S 5 mph
Barometer 30.06 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 24 Nov 8:55 pm EST
Extended Forecast for

Saint Clair MI

  • Tonight

    Tonight: A slight chance of rain after 1am. Cloudy, with a low around 40. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Cloudy then
    Slight Chance
    Rain

  • Tuesday

    Tuesday: Rain likely. Cloudy, with a high near 50. Southeast wind 6 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 1am. Cloudy, with a low around 41. Calm wind becoming south southwest around 6 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain Likely

  • Wednesday

    Wednesday: A chance of rain before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 51. Windy, with a west southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 50%.

    High: 51 °F

    Chance Rain
    and Breezy
    then Chance
    Rain/Snow and
    Windy

  • Wednesday Night

    Wednesday Night: A chance of snow. Mostly cloudy, with a low around 28. Breezy, with a west southwest wind around 24 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.

    Low: 28 °F

    Chance Snow
    and Breezy

  • Thanksgiving Day

    Thanksgiving Day: A chance of snow. Mostly cloudy, with a high near 37. Windy. Chance of precipitation is 50%.

    High: 37 °F

    Chance Snow
    and Windy

  • Thursday Night

    Thursday Night: A chance of snow before 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.

    Low: 25 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain after 1am. Cloudy, with a low around 40. South wind around 7 mph. Chance of precipitation is 20%.
Tuesday
Rain likely. Cloudy, with a high near 50. Southeast wind 6 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain likely, mainly after 1am. Cloudy, with a low around 41. Calm wind becoming south southwest around 6 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of rain before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 51. Windy, with a west southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 28. Breezy, with a west southwest wind around 24 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.
Thanksgiving Day
A chance of snow. Mostly cloudy, with a high near 37. Windy. Chance of precipitation is 50%.
Thursday Night
A chance of snow before 1am. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 35.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
A chance of snow after 1pm. Mostly cloudy, with a high near 34.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 25.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 38.
Sunday Night
Rain and snow likely. Mostly cloudy, with a low around 27.
Monday
A chance of rain. Mostly cloudy, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Clair MI
 42.82°N 82.51°W (Elev. 600 ft)
Last Update:
4:13 pm EST Nov 24, 2025
Forecast Valid:
9pm EST Nov 24, 2025-6pm EST Dec 1, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation