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

42°F

6°C

Humidity 92%
Wind Speed SE 7 mph
Barometer 29.95 in (1014.0 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 17 Feb 4:53 am CST
Extended Forecast for

Fairview Heights IL

  • Today

    Today: Mostly cloudy, with a high near 60. South wind 6 to 16 mph, with gusts as high as 29 mph.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of rain between 1am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 54. Breezy, with a south wind 15 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Mostly Cloudy
    and Breezy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 72. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 50. South wind around 6 mph.

    Low: 50 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. South wind 7 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

    High: 72 °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 51.

    High: 51 °F

    Sunny

  • Friday Night

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

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after noon. Mostly sunny, with a high near 45.

    High: 45 °F

    Chance Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 60. South wind 6 to 16 mph, with gusts as high as 29 mph.
Tonight
A slight chance of rain between 1am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 54. Breezy, with a south wind 15 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 72. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 50. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. South wind 7 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 51.
Friday Night
Partly cloudy, with a low around 32.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly sunny, with a high near 45.
Saturday Night
A 20 percent chance of snow before midnight. Mostly clear, with a low around 27.
Sunday
Sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairview Heights IL
 38.59°N 90.01°W (Elev. 548 ft)
Last Update:
5:01 am CST Feb 17, 2026
Forecast Valid:
5am 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