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.

Overcast

77°F

25°C

Humidity 82%
Wind Speed Calm
Barometer 29.88 in (1011.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Jun 10:53 am CDT
Extended Forecast for

Alorton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 91. South wind 3 to 5 mph.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 74. South wind around 6 mph.

    Low: 74 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 88. Southwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 88 °F

    Chance
    T-storms then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 9pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 69. Southwest wind 5 to 10 mph becoming light west after midnight.

    Low: 69 °F

    Heavy Rain
    then Partly
    Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 87. Northwest wind 3 to 5 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

This Afternoon
Sunny, with a high near 91. South wind 3 to 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 74. South wind around 6 mph.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 88. Southwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 9pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 69. Southwest wind 5 to 10 mph becoming light west after midnight.
Juneteenth
Sunny, with a high near 87. Northwest wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Sunny and hot, with a high near 97.
Sunday Night
Mostly clear, with a low around 77.
Monday
Sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alorton IL
 38.59°N 90.12°W (Elev. 413 ft)
Last Update:
11:37 am CDT Jun 17, 2025
Forecast Valid:
12pm CDT Jun 17, 2025-6pm CDT Jun 23, 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