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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

25°F

-4°C

Humidity 46%
Wind Speed NW 15 G 23 mph
Barometer 30.50 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 22 Feb 8:50 pm CST
Extended Forecast for

2 Miles E Williamson IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 14. Northwest wind 15 to 18 mph, with gusts as high as 30 mph.

    Low: 14 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 30. Northwest wind 8 to 15 mph, with gusts as high as 25 mph.

    High: 30 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 19. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 19 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 49. Breezy, with a south wind 10 to 20 mph.

    High: 49 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. Southwest wind 5 to 11 mph becoming west after midnight.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.

    Low: 34 °F

    Rain Likely

  • Thursday

    Thursday: A 30 percent chance of rain before noon. Mostly sunny, with a high near 49.

    High: 49 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 14. Northwest wind 15 to 18 mph, with gusts as high as 30 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 30. Northwest wind 8 to 15 mph, with gusts as high as 25 mph.
Monday Night
Increasing clouds, with a low around 19. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Mostly cloudy, with a high near 49. Breezy, with a south wind 10 to 20 mph.
Tuesday Night
Mostly cloudy, with a low around 32. Southwest wind 5 to 11 mph becoming west after midnight.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
Rain likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain before noon. Mostly sunny, with a high near 49.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 36.
Saturday
Sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Williamson IL
 38.98°N 89.73°W (Elev. 600 ft)
Last Update:
7:16 pm CST Feb 22, 2026
Forecast Valid:
9pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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