National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

68°F

20°C

Humidity 57%
Wind Speed SE 5 mph
Barometer 29.70 in (1005.4 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 4 May 12:53 pm CDT
Extended Forecast for

Alorton IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind around 15 mph, with gusts as high as 24 mph.

    High: 81 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 59. South wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 61. Southeast wind 6 to 13 mph becoming north in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    High: 61 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 47. North wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 47 °F

    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 59. North wind 6 to 8 mph.

    High: 59 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind around 15 mph, with gusts as high as 24 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 59. South wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Tuesday
Showers and possibly a thunderstorm. High near 61. Southeast wind 6 to 13 mph becoming north in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 47. North wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Wednesday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 59. North wind 6 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 43.
Thursday
Sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 47.
Friday
Mostly sunny, with a high near 75.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 78.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alorton IL
 38.59°N 90.12°W (Elev. 413 ft)
Last Update:
1:25 pm CDT May 4, 2026
Forecast Valid:
1pm CDT May 4, 2026-6pm CDT May 10, 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