Current conditions at

St. Louis Regional Airport (KALN)

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

Fair

25°F

-4°C

Humidity 50%
Wind Speed Calm
Barometer 30.33 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Last update 22 Jan 8:45 pm CST
Detailed forecast for

Madison County

Tonight
Mostly clear this evening, then becoming mostly cloudy. Cooler with lows around 8 above. Northwest winds 5 to 10 mph, increasing to north 15 to 20 mph after midnight. Wind chill values as low as 4 below after midnight.
Friday
Partly sunny. Much cooler with highs around 12. North winds 15 to 20 mph. Wind chill values as low as 12 below.
Friday Night
Mostly cloudy. A slight chance of snow after midnight. Cold. Near steady temperature around 5 above. Northeast winds 10 to 15 mph. Chance of snow 20 percent. Wind chill values as low as 12 below.
Saturday
Snow. Light snow accumulation. Highs around 12. Northeast winds around 10 mph. Chance of snow 90 percent. Wind chill values as low as 11 below.
Saturday Night
Snow. Additional moderate snow accumulation. Near steady temperature around 11. Northeast winds 5 to 10 mph. Chance of snow 90 percent. Wind chill values as low as 4 below.
Sunday
Cloudy. Snow likely, mainly in the morning. Additional moderate snow accumulation possible. Highs around 15. Chance of snow 70 percent. Wind chill values as low as 5 below.
Sunday Night
Mostly cloudy with a slight chance of snow in the evening, then partly cloudy after midnight. Colder with lows around zero. Chance of snow 20 percent. Wind chill values as low as 15 below.
Monday And Monday Night
Mostly clear. Highs 15 to 20. Lows zero to 5 above zero. Wind chill values as low as 15 below.
Tuesday
Mostly sunny. Not as cool with highs in the lower 30s. Wind chill values as low as zero in the morning.
Tuesday Night And Wednesday
Mostly cloudy. Lows 10 to 15. Highs in the mid 20s.
Wednesday Night
Partly cloudy. Colder with lows zero to 5 above zero.
Thursday
Partly sunny. Highs around 20. Wind chill values as low as 10 below in the morning.



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824 PM CST Thu Jan 22 2026
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database