Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

18°F

-8°C

Humidity 62%
Wind Speed NW 10 mph
Barometer 30.15 in (1021.3 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 15 Jan 7:53 am CST
Extended Forecast for

4 Miles SW Waterloo IL

  • Today

    Today: Sunny, with a high near 35. Northwest wind 6 to 9 mph becoming south in the afternoon.

    High: 35 °F

    Sunny

  • Tonight

    Tonight: A slight chance of snow between 9pm and midnight.  Mostly cloudy, with a low around 30. South wind 6 to 10 mph becoming west after midnight.  Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 45. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: Scattered rain and snow showers before 9pm, then scattered snow showers.  Mostly cloudy, with a low around 21. West wind 9 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 50%.

    Low: 21 °F

    Scattered
    Rain/Snow
    then
    Scattered
    Snow Showers

  • Saturday

    Saturday: Partly sunny, with a high near 27. West wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 27 °F

    Partly Sunny

  • Saturday Night

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

    Low: 11 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 28.

    High: 28 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 35. Northwest wind 6 to 9 mph becoming south in the afternoon.
Tonight
A slight chance of snow between 9pm and midnight. Mostly cloudy, with a low around 30. South wind 6 to 10 mph becoming west after midnight. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 45. West wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Scattered rain and snow showers before 9pm, then scattered snow showers. Mostly cloudy, with a low around 21. West wind 9 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 27. West wind 11 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Mostly sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Mostly clear, with a low around 21.
Wednesday
Mostly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Waterloo IL
 38.29°N 90.19°W (Elev. 633 ft)
6:21 am CST Jan 15, 2026
9am CST Jan 15, 2026-6pm CST Jan 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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