Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91° N Lon: 82.53° W Elev: 636 ft.

Fair

39°F

4°C

Humidity 61%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 29 Mar 11:35 pm EDT
Detailed forecast for

St. Clair County

Tonight
Partly cloudy. Lows in the lower 40s. South winds 5 to 10 mph.
Monday
Mostly cloudy. Highs in the mid 60s. Southwest winds 5 to 10 mph.
Monday Night
Mostly cloudy. A chance of rain in the evening, then rain likely and a chance of thunderstorms after midnight. Lows in the lower 50s. South winds up to 10 mph. Chance of rain 60 percent.
Tuesday
Rain and a chance of thunderstorms. Highs around 70. Southwest winds 10 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.
Tuesday Night
Rain and a chance of thunderstorms in the evening, then rain likely after midnight. Lows in the upper 30s. West winds 10 to 15 mph, becoming northwest after midnight. Chance of rain 90 percent.
Wednesday
Cloudy. A chance of rain in the morning. Highs in the mid 40s. Chance of rain 40 percent.
Wednesday Night
Cloudy with a chance of rain and snow. Lows in the lower 30s. Chance of precipitation 50 percent.
Thursday
Rain. Highs in the upper 40s. Chance of rain 80 percent.
Thursday Night
Rain likely. Lows in the upper 30s. Chance of rain 70 percent.
Friday
Mostly cloudy with a 40 percent chance of rain. Highs in the mid 50s.
Friday Night
Cloudy with a 30 percent chance of rain. Lows in the upper 30s.
Saturday
Cloudy with a 50 percent chance of rain. Highs around 60.
Saturday Night
Rain likely. Lows in the mid 40s. Chance of rain 60 percent.
Sunday
Cloudy with a 50 percent chance of rain. Highs in the upper 50s.



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337 PM EDT Sun Mar 29 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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National Digital Forecast Database