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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

63°F

17°C

Humidity 65%
Wind Speed S 15 G 28 mph
Barometer 29.45 in (996.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 15 Mar 8:53 am CDT
Extended Forecast for

4 Miles SW Waterloo IL

Wind Advisory March 15, 10:00am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory

  • Today

    Today: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. Temperature rising to near 65 by noon, then falling to around 54 during the remainder of the day. Breezy, with a south wind 23 to 28 mph, with gusts as high as 44 mph. Chance of precipitation is 80%.

    High: 65 °F⇓

    Breezy.
    Mostly Cloudy
    then T-storms

  • Tonight

    Tonight: Rain and snow before 2am, then scattered flurries between 2am and 5am, then a slight chance of snow after 5am. Some thunder is also possible. Low around 23. Breezy, with a northwest wind 24 to 26 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Breezy.
    Rain/Snow
    then Slight
    Chance Snow

  • Monday

    Monday: Scattered flurries with a slight chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 21 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

    High: 29 °F

    Blustery.
    Slight Chance
    Snow then
    Scattered
    Flurries

  • Monday Night

    Monday Night: Mostly clear, with a low around 14. Northwest wind 10 to 17 mph, with gusts as high as 26 mph.

    Low: 14 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38. Northwest wind 5 to 7 mph becoming southwest in the afternoon.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow between 1am and 4am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. Temperature rising to near 65 by noon, then falling to around 54 during the remainder of the day. Breezy, with a south wind 23 to 28 mph, with gusts as high as 44 mph. Chance of precipitation is 80%.
Tonight
Rain and snow before 2am, then scattered flurries between 2am and 5am, then a slight chance of snow after 5am. Some thunder is also possible. Low around 23. Breezy, with a northwest wind 24 to 26 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
Scattered flurries with a slight chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 21 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 14. Northwest wind 10 to 17 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 38. Northwest wind 5 to 7 mph becoming southwest in the afternoon.
Tuesday Night
A slight chance of snow between 1am and 4am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 68.
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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:
9:21 am CDT Mar 15, 2026
Forecast Valid:
9am CDT Mar 15, 2026-6pm CDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation