Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

70°F

21°C

Humidity 93%
Wind Speed Calm
Barometer 30.04 in (1016.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 4 Aug 11:53 pm CDT
Extended Forecast for

3 Miles SSE Smithton IL

  • Overnight

    Overnight: Clear, with a low around 66. Calm wind.

    Low: 66 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. Calm wind becoming south 5 to 8 mph in the morning.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 3am.  Mostly clear during the early evening, then becoming mostly cloudy, with a low around 70. Southeast wind around 6 mph becoming calm  after midnight.

    Low: 70 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 1pm.  High near 85. South wind around 5 mph becoming calm  in the afternoon.  Chance of precipitation is 80%.

    High: 85 °F

    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 70. Calm wind.  Chance of precipitation is 60%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 86.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 66. Calm wind.
Wednesday
Sunny, with a high near 90. Calm wind becoming south 5 to 8 mph in the morning.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 3am. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 70. Southeast wind around 6 mph becoming calm after midnight.
Thursday
Showers and thunderstorms, mainly before 1pm. High near 85. South wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Smithton IL
 38.37°N 89.96°W (Elev. 410 ft)
12:21 am CDT Aug 5, 2026
12am CDT Aug 5, 2026-6pm CDT Aug 11, 2026
 
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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