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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Saint Clair MI

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. West northwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 55. West northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 40. Calm wind becoming southwest 5 to 8 mph in the evening.

    Low: 40 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 61. West wind 7 to 9 mph.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 32. West wind around 5 mph becoming calm after midnight.

    Low: 32 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.

    Low: 36 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly after 1pm. Cloudy, with a high near 46.

    High: 46 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. West northwest wind around 10 mph, with gusts as high as 21 mph.
Monday
Partly sunny, with a high near 55. West northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Monday Night
Cloudy, then gradually becoming partly cloudy, with a low around 40. Calm wind becoming southwest 5 to 8 mph in the evening.
Tuesday
Sunny, with a high near 61. West wind 7 to 9 mph.
Tuesday Night
Mostly clear, with a low around 32. West wind around 5 mph becoming calm after midnight.
Veterans Day
Partly sunny, with a high near 55.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Thursday
Rain likely, mainly after 1pm. Cloudy, with a high near 46.
Thursday Night
A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31.
Friday
A chance of rain and snow before 10am, then a chance of rain. Mostly cloudy, with a high near 42.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 30.
Saturday
Partly sunny, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Clair MI
 42.82°N 82.51°W (Elev. 600 ft)
Last Update:
10:13 pm EST Nov 8, 2026
Forecast Valid:
11pm EST Nov 8, 2026-6pm EST Nov 15, 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