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

71°F

22°C

Humidity 63%
Wind Speed S 7 mph
Barometer 29.82 in (1009.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 17 Oct 8:53 pm CDT
Extended Forecast for

Sauget IL

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind 6 to 8 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 75. Southwest wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    High: 75 °F

    Heavy Rain

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 51. Southwest wind 8 to 16 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    Low: 51 °F

    Heavy Rain

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 65. Northwest wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 65 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 46. West wind 5 to 7 mph becoming calm.

    Low: 46 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South wind 6 to 8 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10am. Some of the storms could produce heavy rainfall. High near 75. Southwest wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 51. Southwest wind 8 to 16 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 65. Northwest wind 14 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Clear, with a low around 46. West wind 5 to 7 mph becoming calm.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 67.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 48.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 71.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sauget IL
 38.6°N 90.18°W (Elev. 404 ft)
Last Update:
7:21 pm CDT Oct 17, 2025
Forecast Valid:
9pm CDT Oct 17, 2025-6pm CDT Oct 24, 2025
 
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