National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

75°F

24°C

Humidity 90%
Wind Speed SE 5 mph
Barometer 29.95 in (1013.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 26 Jun 11:53 am CDT
Extended Forecast for

Smithton IL

Flood Watch June 26, 12:51pm until June 26, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 26, 12:51pm until June 26, 07:00pm

    NOW until 7:00pm Fri

    Flood Watch

  • This Afternoon

    High: 81 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms, mainly between 11pm and 4am. Low around 68. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 68 °F

    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers after 1am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 93. South wind 6 to 9 mph.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 81. South wind around 8 mph. Chance of precipitation is 80%.
Tonight
Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms, mainly between 11pm and 4am. Low around 68. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 7pm, then a chance of showers after 1am. Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 93. South wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 95.
Monday Night
Clear, with a low around 75.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Clear, with a low around 75.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
Last Update:
10:56 am CDT Jun 26, 2026
Forecast Valid:
12pm CDT Jun 26, 2026-6pm CDT Jul 2, 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