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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

77°F

25°C

Humidity 48%
Wind Speed S 6 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 Apr 1:53 pm CDT
Extended Forecast for

2 Miles WNW Belleville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. Southwest wind around 9 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. South wind 5 to 7 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. South wind 7 to 16 mph, with gusts as high as 26 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 63. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 74. South wind around 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 74 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 54. Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 78. Southwest wind around 9 mph.
Tonight
Mostly clear, with a low around 58. South wind 5 to 7 mph.
Thursday
Sunny, with a high near 81. South wind 7 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 63. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm. High near 74. South wind around 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 54. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 76.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 54.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Monday
Showers and possibly a thunderstorm. High near 79. Breezy. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Belleville IL
 38.55°N 90.04°W (Elev. 538 ft)
Last Update:
1:26 pm CDT Apr 22, 2026
Forecast Valid:
2pm CDT Apr 22, 2026-6pm CDT Apr 28, 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