Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

70°F

21°C

Humidity 84%
Wind Speed SE 3 mph
Barometer 30.03 in (1016.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 20 Jun 6:53 am CDT
Extended Forecast for

3 Miles SSE Smithton IL

Extreme Heat Watch June 21, 12:00pm until June 24, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
  • Today

    Today: Sunny, with a high near 92. Heat index values as high as 100. South wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind around 10 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Heat index values as high as 110. South wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind 6 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Southwest wind 6 to 10 mph.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 76.

    Low: 76 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 1pm.  Sunny, with a high near 94.

    High: 94 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 92. Heat index values as high as 100. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 75. South wind around 10 mph.
Saturday
Sunny, with a high near 96. Heat index values as high as 110. South wind 8 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 76. South wind 6 to 10 mph.
Sunday
Sunny and hot, with a high near 97. Southwest wind 6 to 10 mph.
Sunday Night
Clear, with a low around 76.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Smithton IL
 38.37°N 89.96°W (Elev. 410 ft)
5:37 am CDT Jun 20, 2025
7am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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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