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

40°F

4°C

Humidity 100%
Wind Speed Calm
Barometer 30.31 in (1026.6 mb)
Dewpoint 40°F (4°C)
Visibility 8.00 mi
Last update 3 Nov 9:53 pm CST
Extended Forecast for

Alorton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 39. Light and variable wind.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 72. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 72 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52. Southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 72. Southwest wind 7 to 10 mph becoming north in the afternoon.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 42. North wind around 6 mph becoming calm.

    Low: 42 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 70.

    High: 70 °F

    Slight Chance
    Rain then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 39. Light and variable wind.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 72. Light southeast wind becoming south 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 52. Southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 72. Southwest wind 7 to 10 mph becoming north in the afternoon.
Wednesday Night
Clear, with a low around 42. North wind around 6 mph becoming calm.
Thursday
Sunny, with a high near 66.
Thursday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 55.
Friday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 43.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly clear, with a low around 31.
Monday
Sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alorton IL
 38.57°N 90.12°W (Elev. 413 ft)
Last Update:
10:36 pm CST Nov 3, 2025
Forecast Valid:
10pm CST Nov 3, 2025-6pm CST Nov 10, 2025
 
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