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.

Light Rain Fog/Mist

63°F

17°C

Humidity 94%
Wind Speed S 15 G 20 mph
Barometer 29.75 in
Dewpoint 61°F (16°C)
Visibility 6.00 mi
Last update 4 Nov 3:36 pm EST
Extended Forecast for

Saint Clair MI

  • This Afternoon

    This Afternoon: Rain. High near 67. South wind around 16 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Rain

  • Tonight

    Tonight: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 52. Southwest wind 7 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Rain Likely
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 60. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.

    High: 60 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain likely, mainly after 3am. Cloudy, with a low around 41. West southwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Cloudy then
    Rain Likely

  • Friday

    Friday: A chance of rain before 7am, then rain likely after 1pm. Mostly cloudy, with a high near 53. West northwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance Rain
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain. High near 67. South wind around 16 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 52. Southwest wind 7 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly cloudy, with a high near 60. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.
Thursday Night
Rain likely, mainly after 3am. Cloudy, with a low around 41. West southwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain before 7am, then rain likely after 1pm. Mostly cloudy, with a high near 53. West northwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Saturday
Mostly cloudy, with a high near 51.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 61.
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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:
3:24 pm EST Nov 4, 2026
Forecast Valid:
3pm EST Nov 4, 2026-6pm EST Nov 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation