Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

88°F

31°C

Humidity 62%
Wind Speed SW 15 G 21 mph
Barometer 29.97 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 11 Aug 10:50 am CDT
Extended Forecast for

Litchfield Municipal Airport IL

Heat Advisory August 11, 11:20am until August 12, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 11, 11:20am until August 12, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Today

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 74. South wind around 8 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Scattered showers and thunderstorms, mainly after 2pm.  Mostly sunny, with a high near 92. Heat index values as high as 102. Southwest wind around 9 mph.  Chance of precipitation is 40%.

    High: 92 °F

    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms, mainly after 3am.  Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 72. South wind around 6 mph.  Chance of precipitation is 30%.

    Low: 72 °F

    Scattered
    T-storms

  • Thursday

    Thursday: Scattered showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 88. East wind around 7 mph.  Chance of precipitation is 40%.

    High: 88 °F

    Scattered
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly after 1am.  Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 86.

    High: 86 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 93. Heat index values as high as 102. Southwest wind around 11 mph.
Tonight
Partly cloudy, with a low around 74. South wind around 8 mph.
Wednesday
Scattered showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 102. Southwest wind around 9 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers and thunderstorms, mainly after 3am. Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 72. South wind around 6 mph. Chance of precipitation is 30%.
Thursday
Scattered showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 88. East wind around 7 mph. Chance of precipitation is 40%.
Thursday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 91.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Litchfield Municipal Airport IL
 39.16°N 89.67°W (Elev. 696 ft)
10:46 am CDT Aug 11, 2026
11am CDT Aug 11, 2026-6pm CDT Aug 17, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database