Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

86°F

30°C

Humidity 52%
Wind Speed Vrbl 5 mph
Barometer 30.06 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 5 Aug 1:50 pm CDT
Extended Forecast for

2 Miles WNW Glen Carbon IL

Flood Watch August 5, 10:00pm until August 6, 10:00am
Click here for hazard details and duration
Flood Watch
  • This Afternoon

    This Afternoon: Partly sunny, with a high near 89. South wind around 8 mph.

    High: 89 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am.  Mostly cloudy, with a low around 72. South wind around 6 mph becoming light and variable  after midnight.  Chance of precipitation is 60%.

    Low: 72 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 1pm.  High near 83. Light and variable wind becoming south around 6 mph in the morning.  Chance of precipitation is 80%.

    High: 83 °F

    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly after 9pm.  Mostly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight.

    Low: 71 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 86. Southwest wind 5 to 7 mph.

    High: 86 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 89. South wind around 8 mph.
Tonight
Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 72. South wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms, mainly before 1pm. High near 83. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly after 9pm. Mostly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind 5 to 7 mph.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 76.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 77.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Glen Carbon IL
 38.77°N 90°W (Elev. 551 ft)
1:26 pm CDT Aug 5, 2026
2pm CDT Aug 5, 2026-6pm CDT Aug 11, 2026
 
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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