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.

Overcast

49°F

9°C

Humidity 83%
Wind Speed N 10 mph
Barometer 29.98 in (1015.4 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 15 Feb 11:53 am CST
Extended Forecast for

2 Miles SSE Belleville IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 56. North wind 5 to 10 mph becoming light.

    High: 56 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Fog

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 65. Light south wind increasing to 5 to 10 mph in the morning.

    High: 65 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. South wind around 7 mph.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers after noon. Sunny, with a high near 71.

    High: 71 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 56. North wind 5 to 10 mph becoming light.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 37. Calm wind.
Washington's Birthday
Partly sunny, with a high near 65. Light south wind increasing to 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 42. South wind around 7 mph.
Tuesday
Mostly cloudy, with a high near 65. South wind 6 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
Partly sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
A 30 percent chance of showers after noon. Sunny, with a high near 71.
Thursday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 53.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Belleville IL
 38.5°N 89.98°W (Elev. 495 ft)
Last Update:
10:46 am CST Feb 15, 2026
Forecast Valid:
12pm CST Feb 15, 2026-6pm CST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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