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

68°F

20°C

Humidity 100%
Wind Speed SE 5 mph
Barometer 30.01 in (1016.0 mb)
Dewpoint 68°F (20°C)
Visibility 8.00 mi
Last update 15 Oct 6:53 am CDT
Extended Forecast for

2 Miles SSE Waterloo IL

  • Today

    Today: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 1am, then scattered showers between 1am and 3am. Increasing clouds, with a low around 49. Southwest wind 8 to 17 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 56. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 28 mph.

    High: 56 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 40. North wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 40 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 59. North wind 3 to 8 mph.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms likely before 1am, then scattered showers between 1am and 3am. Increasing clouds, with a low around 49. Southwest wind 8 to 17 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 56. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 28 mph.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 40. North wind 11 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 59. North wind 3 to 8 mph.
Saturday Night
Clear, with a low around 37.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Waterloo IL
 38.31°N 90.13°W (Elev. 633 ft)
Last Update:
5:11 am CDT Oct 15, 2026
Forecast Valid:
7am CDT Oct 15, 2026-6pm CDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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