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

44°F

7°C

Humidity 79%
Wind Speed SE 6 mph
Barometer 30.13 in (1020.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 9 Jan 7:53 pm CST
Extended Forecast for

3 Miles SSE Waterloo IL

  • Tonight

    Tonight: A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 38. East wind around 6 mph becoming calm.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 20 percent chance of rain before 8am. Cloudy through mid morning, then gradual clearing, with a high near 46. Northwest wind 7 to 17 mph, with gusts as high as 26 mph.

    High: 46 °F

    Slight Chance
    Rain then
    Sunny

  • Saturday Night

    Saturday Night: A chance of sprinkles, mixing with flurries after 10pm, then gradually ending. Partly cloudy, with a low around 25. Northwest wind 8 to 15 mph, with gusts as high as 29 mph.

    Low: 25 °F

    Chance
    Sprinkles/Flurries
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 38. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 38 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25. Light and variable wind becoming southwest 5 to 7 mph after midnight.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain after 3am. Mostly cloudy, with a low around 38. East wind around 6 mph becoming calm.
Saturday
A 20 percent chance of rain before 8am. Cloudy through mid morning, then gradual clearing, with a high near 46. Northwest wind 7 to 17 mph, with gusts as high as 26 mph.
Saturday Night
A chance of sprinkles, mixing with flurries after 10pm, then gradually ending. Partly cloudy, with a low around 25. Northwest wind 8 to 15 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 38. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 25. Light and variable wind becoming southwest 5 to 7 mph after midnight.
Monday
Sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Partly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Mostly cloudy, with a high near 44.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Waterloo IL
 38.28°N 90.13°W (Elev. 656 ft)
Last Update:
4:51 pm CST Jan 9, 2026
Forecast Valid:
8pm CST Jan 9, 2026-6pm CST Jan 16, 2026
 
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Additional Resources

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Chance of Precipitation