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.

Fair

61°F

16°C

Humidity 93%
Wind Speed Calm
Barometer 30.15 in (1020.6 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 2 Oct 2:53 am CDT
Extended Forecast for

Smithton IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.

    High: 88 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 63. Light south wind.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 60. Calm wind.
Thursday
Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 63. Light south wind.
Friday
Sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 60. Light south wind.
Saturday
Sunny, with a high near 87.
Saturday Night
Clear, with a low around 57.
Sunday
Sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 62.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 85.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
Last Update:
2:46 am CDT Oct 2, 2025
Forecast Valid:
3am CDT Oct 2, 2025-6pm CDT Oct 8, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation