National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

24°F

-4°C

Humidity 77%
Wind Speed Calm
Barometer 30.46 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 1 Dec 4:15 am CST
Extended Forecast for

2 Miles E Williamson IL

  • Today

    Today: Snow likely, mainly after 5pm. Cloudy, with a high near 29. Calm wind becoming east around 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 29 °F

    Cloudy then
    Snow Likely

  • Tonight

    Tonight: Snow, mainly before 11pm. Low around 17. Calm wind becoming northwest 5 to 7 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 17 °F

    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 28. Northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 17. Calm wind becoming south around 6 mph after midnight.

    Low: 17 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 37. South wind 5 to 8 mph becoming west in the afternoon.

    High: 37 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow. Mostly cloudy, with a high near 32.

    High: 32 °F

    Chance Snow

Detailed Forecast

Today
Snow likely, mainly after 5pm. Cloudy, with a high near 29. Calm wind becoming east around 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow, mainly before 11pm. Low around 17. Calm wind becoming northwest 5 to 7 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Partly sunny, with a high near 28. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 17. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 37. South wind 5 to 8 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
Mostly sunny and cold, with a high near 20.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 8.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 32.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 24.
Saturday
Mostly cloudy, with a high near 37.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
Mostly cloudy, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Williamson IL
 38.98°N 89.73°W (Elev. 600 ft)
Last Update:
3:16 am CST Dec 1, 2025
Forecast Valid:
4am CST Dec 1, 2025-6pm CST Dec 7, 2025
 
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