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

70°F

21°C

Humidity 97%
Wind Speed Calm
Barometer 29.96 in (1014.1 mb)
Dewpoint 69°F (21°C)
Visibility 8.00 mi
Last update 6 Jul 2:53 am CDT
Extended Forecast for

Sauget IL

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 70. Light north wind.

    Low: 70 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 88. North wind 5 to 7 mph.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71. North wind 5 to 8 mph becoming calm in the evening.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 89. Northeast wind 3 to 7 mph.

    High: 89 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Northeast wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 76. Chance of precipitation is 60%.

    Low: 76 °F

    Slight Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 70. Light north wind.
Monday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 88. North wind 5 to 7 mph.
Monday Night
Partly cloudy, with a low around 71. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 89. Northeast wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 71. Northeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.
Thursday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 76. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Sauget IL
 38.6°N 90.18°W (Elev. 404 ft)
Last Update:
1:26 am CDT Jul 6, 2026
Forecast Valid:
3am CDT Jul 6, 2026-6pm CDT Jul 12, 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