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.

Light Rain

75°F

24°C

Humidity 90%
Wind Speed S 10 mph
Barometer 29.80 in (1008.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 31 Jul 5:53 pm CDT
Extended Forecast for

Fairview Heights IL

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 3am. Low around 69. South wind 9 to 13 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    Low: 69 °F

    T-storms then
    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 77. West wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 77 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 67. Northwest wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers, mainly after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. North wind 13 to 15 mph, with gusts as high as 23 mph.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66. North wind 5 to 10 mph.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 3am. Low around 69. South wind 9 to 13 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Saturday
Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 77. West wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Saturday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 67. Northwest wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers, mainly after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. North wind 13 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 66. North wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 90.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 92.
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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:
4:21 pm CDT Jul 31, 2026
Forecast Valid:
6pm CDT Jul 31, 2026-6pm CDT Aug 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation