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.

Fair

86°F

30°C

Humidity 75%
Wind Speed S 7 mph
Barometer 30.08 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 18 Aug 9:50 am CDT
Extended Forecast for

Old Ripley IL

Heat Advisory August 18, 10:13am until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 18, 10:13am until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Today

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. Light southeast wind.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 86. Light north wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 92. Heat index values as high as 103. South wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 72. Light southeast wind.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Calm wind.
Wednesday
A slight chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 86. Light north wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Ripley IL
 38.89°N 89.57°W (Elev. 548 ft)
Last Update:
8:46 am CDT Aug 18, 2025
Forecast Valid:
10am CDT Aug 18, 2025-6pm CDT Aug 24, 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