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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

64°F

18°C

Humidity 29%
Wind Speed W 10 G 18 mph
Barometer 29.75 in (1007.3 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 13 Jan 3:53 pm CST
Extended Forecast for

Waterloo IL

  • Tonight

    Tonight: A chance of rain before 3am, then a chance of sprinkles after 4am. Cloudy, with a low around 39. West wind 7 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    Low: 39 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of sprinkles and flurries between 8am and 11am. Mostly cloudy through mid morning, then gradual clearing, with a temperature falling to around 31 by 5pm. Breezy, with a north wind 14 to 21 mph, with gusts as high as 30 mph.

    High: 40 °F⇓

    Breezy.
    Chance
    Sprinkles/Flurries
    then Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 17. North wind 6 to 14 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 34. Northwest wind around 6 mph becoming south in the afternoon.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 26. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 23 mph.

    Low: 26 °F

    Slight Chance
    Snow

  • Friday

    Friday: Partly sunny, with a high near 45. Breezy.

    High: 45 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain before 3am, then a chance of sprinkles after 4am. Cloudy, with a low around 39. West wind 7 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Wednesday
A chance of sprinkles and flurries between 8am and 11am. Mostly cloudy through mid morning, then gradual clearing, with a temperature falling to around 31 by 5pm. Breezy, with a north wind 14 to 21 mph, with gusts as high as 30 mph.
Wednesday Night
Clear, with a low around 17. North wind 6 to 14 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 34. Northwest wind around 6 mph becoming south in the afternoon.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 26. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 45. Breezy.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 18.
M.L.King Day
Sunny, with a high near 35.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Mostly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IL
 38.33°N 90.16°W (Elev. 600 ft)
Last Update:
3:16 pm CST Jan 13, 2026
Forecast Valid:
4pm CST Jan 13, 2026-6pm CST Jan 20, 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