Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89° N Lon: 90.03° W Elev: 518 ft.

Overcast

37°F

3°C

Humidity 48%
Wind Speed W 10 mph
Barometer 30.21 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 21 Feb 12:45 pm CST
Detailed forecast for

Madison County

This Afternoon
Mostly sunny. Highs in the lower 40s. Northwest winds 10 to 15 mph.
Tonight
Mostly clear. Lows in the lower 20s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Sunday
Sunny, breezy with highs in the lower 30s. Northwest winds 15 to 25 mph. Wind chill values as low as 5 above.
Sunday Night
Mostly clear in the evening, then becoming partly cloudy. Lows around 16. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 1 above.
Monday
Sunny. Highs in the mid 30s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 1 above in the morning.
Monday Night
Mostly clear in the evening, then becoming partly cloudy. Lows around 20.
Tuesday Through Wednesday
Mostly cloudy. Highs in the mid 50s. Lows in the lower 40s.
Wednesday Night
Mostly cloudy. A slight chance of rain in the evening, then a chance of rain after midnight. Lows in the mid 30s. Chance of rain 40 percent.
Thursday
Mostly sunny with a 40 percent chance of rain. Highs in the lower 50s.
Thursday Night And Friday
Mostly clear. Lows around 30. Highs around 60.



Basemap Options
Click map to change the forecast location
Loading map...
1228 PM CST Sat Feb 21 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database