National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

55°F

13°C

Humidity 74%
Wind Speed S 10 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 17 Feb 10:53 am CST
Extended Forecast for

3 Miles WSW Fairview Heights IL

  • Today

    Today: Mostly cloudy, with a high near 62. South wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 62 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of showers between 1am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 57. South wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 73. Southwest wind 7 to 11 mph, with gusts as high as 23 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 52. South wind around 6 mph.

    Low: 52 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 74. South wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 38.

    Low: 38 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of snow before noon, then a chance of rain. Mostly sunny, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Slight Chance
    Snow then
    Chance Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 62. South wind 10 to 17 mph, with gusts as high as 26 mph.
Tonight
A slight chance of showers between 1am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 57. South wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 73. Southwest wind 7 to 11 mph, with gusts as high as 23 mph.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 52. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 74. South wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 38.
Friday
Sunny, with a high near 52.
Friday Night
Partly cloudy, with a low around 32.
Saturday
A slight chance of snow before noon, then a chance of rain. Mostly sunny, with a high near 46. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of snow before midnight. Mostly clear, with a low around 28.
Sunday
Sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Fairview Heights IL
 38.59°N 90.06°W (Elev. 423 ft)
Last Update:
11:11 am CST Feb 17, 2026
Forecast Valid:
11am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation