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 94%
Wind Speed SE 3 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 13 Jul 7:53 pm CDT
Extended Forecast for

Smithton IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 69. Light and variable wind.

    Low: 69 °F

    Chance
    T-storms then
    Patchy Fog

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Areas Fog
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 92. Chance of precipitation is 30%.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.

    Low: 74 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 69. Light and variable wind.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 86. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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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:
7:37 pm CDT Jul 13, 2025
Forecast Valid:
8pm CDT Jul 13, 2025-6pm CDT Jul 20, 2025
 
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