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.

Light Rain Fog/Mist

47°F

8°C

Humidity 90%
Wind Speed N 17 mph
Barometer 29.91 in (1012.9 mb)
Dewpoint 44°F (7°C)
Visibility 4.00 mi
Wind Chill40°F (4°C)
Last update 11 Mar 12:53 pm CDT
Extended Forecast for

4 Miles SW Waterloo IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 3pm. Cloudy, with a high near 63. Breezy, with a northwest wind around 20 mph, with gusts as high as 31 mph.

    High: 63 °F

    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 31. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph.

    Low: 31 °F

    Decreasing
    Clouds and
    Blustery then
    Clear

  • Thursday

    Thursday: Sunny, with a high near 54. West wind 5 to 8 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 43 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 62. West wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain after 1pm. High near 66. Breezy. Chance of precipitation is 80%.

    High: 66 °F

    Breezy.
    Chance
    T-storms then
    Rain

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 3pm. Cloudy, with a high near 63. Breezy, with a northwest wind around 20 mph, with gusts as high as 31 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 31. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Sunny, with a high near 54. West wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 43. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Friday
Partly sunny, with a high near 62. West wind 10 to 14 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 37.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
A chance of rain and thunderstorms, then rain after 1pm. High near 66. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Partly cloudy, with a low around 25. Blustery. Chance of precipitation is 30%.
Monday
Sunny, with a high near 39. Breezy.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Waterloo IL
 38.29°N 90.19°W (Elev. 633 ft)
Last Update:
11:41 am CDT Mar 11, 2026
Forecast Valid:
1pm CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation