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

77°F

25°C

Humidity 84%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Jul 10:55 pm CDT
Extended Forecast for

Staunton IL

  • Tonight

    Tonight: Clear, with a low around 69. Calm wind.

    Low: 69 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Calm wind becoming east around 6 mph in the afternoon.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71. Light and variable wind.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 90 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.

    High: 89 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 69. Calm wind.
Wednesday
Sunny, with a high near 91. Calm wind becoming east around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 71. Light and variable wind.
Thursday
A slight chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 72. Calm wind.
Friday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 92.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 72.
Monday
Mostly sunny, with a high near 92.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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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:
10:26 pm CDT Jul 14, 2026
Forecast Valid:
11pm CDT Jul 14, 2026-6pm CDT Jul 21, 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