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

54°F

12°C

Humidity 37%
Wind Speed NW 12 mph
Barometer 30.13 in (1020.1 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 18 Apr 7:53 pm CDT
Extended Forecast for

2 Miles SSE Belleville IL

  • Tonight

    Tonight: Clear, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Light west wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 28 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. Southeast wind around 7 mph becoming south after midnight.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 67. Light west wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 41. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 49. Southeast wind around 7 mph becoming south after midnight.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Belleville IL
 38.5°N 89.98°W (Elev. 495 ft)
Last Update:
5:56 pm CDT Apr 18, 2026
Forecast Valid:
8pm CDT Apr 18, 2026-6pm CDT Apr 25, 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