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

37°F

3°C

Humidity 28%
Wind Speed S 8 G 18 mph
Barometer 30.25 in (1024.8 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 20 Jan 4:53 pm CST
Extended Forecast for

Sauget IL

  • Tonight

    Tonight: Increasing clouds, with a low around 29. South wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 44. West wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 44 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Southwest wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 38. North wind 3 to 5 mph.

    High: 38 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 11. Light north wind increasing to 6 to 11 mph after midnight. Winds could gust as high as 20 mph.

    Low: 11 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 17.

    High: 17 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 4.

    Low: 4 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Cloudy and cold, with a high near 15.

    High: 15 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 9.

    Low: 9 °F

    Chance Snow

Detailed Forecast

Tonight
Increasing clouds, with a low around 29. South wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 44. West wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 25. Southwest wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Thursday
Partly sunny, with a high near 38. North wind 3 to 5 mph.
Thursday Night
Mostly cloudy, with a low around 11. Light north wind increasing to 6 to 11 mph after midnight. Winds could gust as high as 20 mph.
Friday
Mostly cloudy and cold, with a high near 17.
Friday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 4.
Saturday
A 40 percent chance of snow. Cloudy and cold, with a high near 15.
Saturday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 9.
Sunday
Partly sunny, with a high near 23.
Sunday Night
Partly cloudy, with a low around 7.
Monday
Mostly sunny, with a high near 26.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 37.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sauget IL
 38.6°N 90.18°W (Elev. 404 ft)
Last Update:
4:26 pm CST Jan 20, 2026
Forecast Valid:
5pm CST Jan 20, 2026-6pm CST Jan 27, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation