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

23°F

-5°C

Humidity 53%
Wind Speed NW 12 mph
Barometer 30.37 in (1029.0 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 27 Jan 5:53 pm CST
Extended Forecast for

3 Miles ESE Swansea IL

  • Tonight

    Tonight: Mostly clear, with a low around 1. North wind 3 to 7 mph.

    Low: 1 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 29. Light west wind increasing to 5 to 9 mph in the morning.

    High: 29 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. Southwest wind around 5 mph becoming calm in the evening.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 22. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 22 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5. Calm wind becoming north around 5 mph after midnight.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near 16.

    High: 16 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 1.

    Low: 1 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 17.

    High: 17 °F

    Cold

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 1.

    Low: 1 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 1. North wind 3 to 7 mph.
Wednesday
Increasing clouds, with a high near 29. Light west wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 9. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly cloudy, with a high near 22. Calm wind becoming northeast around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 5. Calm wind becoming north around 5 mph after midnight.
Friday
Mostly sunny and cold, with a high near 16.
Friday Night
Partly cloudy, with a low around 1.
Saturday
Mostly sunny and cold, with a high near 17.
Saturday Night
Partly cloudy, with a low around 1.
Sunday
Partly sunny, with a high near 26.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 14.
Monday
Partly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Partly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Swansea IL
 38.52°N 89.95°W (Elev. 505 ft)
Last Update:
4:31 pm CST Jan 27, 2026
Forecast Valid:
6pm CST Jan 27, 2026-6pm CST Feb 3, 2026
 
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