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.

A Few Clouds

70°F

21°C

Humidity 73%
Wind Speed SE 7 mph
Barometer 29.67 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 8 May 8:50 am CDT
Extended Forecast for

Williamson IL

  • Today

    Today: Showers and thunderstorms likely, mainly between 2pm and 5pm. Increasing clouds, with a high near 79. Southeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 79 °F

    Mostly Sunny
    then T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 59. Southeast wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 60%.

    Low: 59 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 70. Breezy, with a west wind 10 to 20 mph, with gusts as high as 29 mph.

    High: 70 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 50. North wind 8 to 11 mph.

    Low: 50 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 68. Northwest wind 7 to 11 mph.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly between 2pm and 5pm. Increasing clouds, with a high near 79. Southeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 59. Southeast wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 70. Breezy, with a west wind 10 to 20 mph, with gusts as high as 29 mph.
Thursday Night
Mostly cloudy, with a low around 50. North wind 8 to 11 mph.
Friday
Mostly sunny, with a high near 68. Northwest wind 7 to 11 mph.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Sunny, with a high near 71.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 76.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Williamson IL
 38.98°N 89.76°W (Elev. 597 ft)
Last Update:
8:37 am CDT May 8, 2024
Forecast Valid:
9am CDT May 8, 2024-6pm CDT May 14, 2024
 
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