Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Mostly Cloudy

82°F

28°C

Humidity 51%
Wind Speed E 3 mph
Barometer 29.97 in (1014.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 20 Jun 2:53 pm CDT
Extended Forecast for

Fairview Heights IL

Flood Watch June 21, 07:00am until June 22, 07:00am
Click here for hazard details and duration
Flood Watch
  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms.  Mostly cloudy, with a high near 85. Northwest wind 3 to 5 mph.  Chance of precipitation is 20%.

    High: 85 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 67. Northeast wind around 6 mph becoming light and variable.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms, mainly before 3pm.  High near 84. Southeast wind 8 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph.  Chance of precipitation is 80%.

    High: 84 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 4am, then isolated showers.  Low around 67. South wind 9 to 13 mph becoming northwest in the evening. Winds could gust as high as 22 mph.  Chance of precipitation is 90%.

    Low: 67 °F

    T-storms then
    Scattered
    T-storms

  • Monday

    Monday: A slight chance of showers between 7am and 10am.  Mostly cloudy, with a high near 77. North wind 8 to 11 mph.  Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly cloudy, with a high near 85. Northwest wind 3 to 5 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 67. Northeast wind around 6 mph becoming light and variable.
Sunday
Showers and thunderstorms, mainly before 3pm. High near 84. Southeast wind 8 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms before 4am, then isolated showers. Low around 67. South wind 9 to 13 mph becoming northwest in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Monday
A slight chance of showers between 7am and 10am. Mostly cloudy, with a high near 77. North wind 8 to 11 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 63.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Fairview Heights IL
 38.59°N 89.98°W (Elev. 561 ft)
2:51 pm CDT Jun 20, 2026
3pm CDT Jun 20, 2026-6pm CDT Jun 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database