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

22°F

-6°C

Humidity 85%
Wind Speed S 6 mph
Barometer 30.39 in (1029.5 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 12 Jan 1:53 am CST
Extended Forecast for

2 Miles SE Cahokia IL

  • Overnight

    Overnight: Clear, with a low around 22. South wind 3 to 6 mph.

    Low: 22 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 52. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. Southwest wind around 7 mph.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. West wind 8 to 15 mph, with gusts as high as 28 mph.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 39. West wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature rising to near 43 by 10am, then falling to around 35 during the remainder of the day. Breezy.

    High: 43 °F⇓

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 22. South wind 3 to 6 mph.
Monday
Sunny, with a high near 52. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 37. Southwest wind around 7 mph.
Tuesday
Partly sunny, with a high near 61. West wind 8 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 39. West wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a temperature rising to near 43 by 10am, then falling to around 35 during the remainder of the day. Breezy.
Wednesday Night
Mostly cloudy, with a low around 19.
Thursday
Mostly sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 44.
Friday Night
Mostly cloudy, with a low around 24.
Saturday
Mostly cloudy, with a high near 32.
Saturday Night
Partly cloudy, with a low around 15.
Sunday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
Last Update:
12:31 am CST Jan 12, 2026
Forecast Valid:
2am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
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Additional Resources

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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