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

74°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 17 Aug 2:35 am CDT
Extended Forecast for

2 Miles SSE Litchfield IL

Heat Advisory August 17, 02:56am until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 02:56am until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Overnight

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95. Heat index values as high as 105. Light and variable wind.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 93. Heat index values as high as 103. Calm wind becoming southeast around 5 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 73. Light south wind.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95. Heat index values as high as 105. Light and variable wind.
Sunday Night
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. Calm wind.
Monday
Sunny, with a high near 93. Heat index values as high as 103. Calm wind becoming southeast around 5 mph.
Monday Night
Mostly clear, with a low around 73. Calm wind.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.
Tuesday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Litchfield IL
 39.16°N 89.64°W (Elev. 686 ft)
Last Update:
2:11 am CDT Aug 17, 2025
Forecast Valid:
2am CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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