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

78°F

26°C

Humidity 75%
Wind Speed SW 9 mph
Barometer 29.94 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 13 Oct 11:35 pm CDT
Extended Forecast for

Staunton IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 5am. Increasing clouds, with a low around 70. South wind around 7 mph becoming west after midnight. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 77. West wind around 6 mph becoming north in the afternoon. Chance of precipitation is 80%.

    High: 77 °F

    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 63. North wind 5 to 8 mph becoming east after midnight. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 81. East wind 7 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%.

    High: 81 °F

    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 47. Northwest wind 8 to 18 mph, with gusts as high as 25 mph.

    Low: 47 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 60. Breezy.

    High: 60 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly after 5am. Increasing clouds, with a low around 70. South wind around 7 mph becoming west after midnight. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 77. West wind around 6 mph becoming north in the afternoon. Chance of precipitation is 80%.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 63. North wind 5 to 8 mph becoming east after midnight. Chance of precipitation is 30%.
Thursday
Showers and possibly a thunderstorm. High near 81. East wind 7 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 47. Northwest wind 8 to 18 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 60. Breezy.
Friday Night
Mostly clear, with a low around 34.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 36.
Sunday
Sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Staunton IL
 39.01°N 89.79°W (Elev. 627 ft)
Last Update:
11:11 pm CDT Oct 13, 2026
Forecast Valid:
11pm CDT Oct 13, 2026-6pm CDT Oct 20, 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