Current conditions at

St Clair County International Airport (KPHN)

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

Fair

50°F

10°C

Humidity 94%
Wind Speed Calm
Barometer 30.22 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 28 Sep 9:35 pm EDT
Detailed forecast for

St. Clair County

Tonight
Mostly clear. Lows in the upper 40s. Northeast winds up to 5 mph.
Monday
Sunny. Highs in the upper 70s. South winds up to 5 mph, becoming east in the afternoon.
Monday Night
Mostly clear. Lows around 50. Northeast winds up to 5 mph.
Tuesday
Sunny. Highs in the mid 70s. Northeast winds up to 10 mph. Gusts up to 25 mph in the afternoon.
Tuesday Night
Mostly clear. Lows in the upper 40s. Northeast winds up to 10 mph with gusts up to 25 mph.
Wednesday
Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 60s.
Wednesday Night
Partly cloudy. Lows in the mid 40s.
Thursday
Partly cloudy. Highs around 70.
Thursday Night
Mostly clear. Lows in the upper 40s.
Friday
Sunny. Highs in the mid 70s.
Friday Night
Mostly clear. Lows in the lower 50s.
Saturday
Mostly sunny. Highs in the upper 70s.
Saturday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.
Sunday
Mostly sunny. Highs in the upper 70s.



Basemap Options
Click map to change the forecast location
Loading map...
352 PM EDT Sun Sep 28 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database