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.

Overcast

57°F

14°C

Humidity 82%
Wind Speed W 9 mph
Barometer 29.70 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 5 Nov 3:16 am EST
Extended Forecast for

Saint Clair MI

  • Overnight

    Overnight: Mostly cloudy, with a low around 52. West southwest wind around 8 mph.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain before 2pm, then a slight chance of rain after 3pm. Increasing clouds, with a high near 59. Southwest wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 59 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly after 3am. Cloudy, with a low around 40. Southwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Cloudy then
    Rain Likely

  • Friday

    Friday: A chance of rain before 10am, then rain likely after 1pm. Cloudy, with a high near 52. West northwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance Rain
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain likely, mainly after 7pm. Mostly cloudy, with a low around 36. West northwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Rain Likely

  • Saturday

    Saturday: A chance of rain before 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.

    High: 52 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 52. West southwest wind around 8 mph.
Thursday
A slight chance of rain before 2pm, then a slight chance of rain after 3pm. Increasing clouds, with a high near 59. Southwest wind 8 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday Night
Rain likely, mainly after 3am. Cloudy, with a low around 40. Southwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain before 10am, then rain likely after 1pm. Cloudy, with a high near 52. West northwest wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely, mainly after 7pm. Mostly cloudy, with a low around 36. West northwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of rain before 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 33.
Monday
Mostly sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 34.
Veterans Day
Mostly sunny, with a high near 54.
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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:
1:24 am EST Nov 5, 2026
Forecast Valid:
3am EST Nov 5, 2026-6pm EST Nov 11, 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