Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

73°F

23°C

Humidity 94%
Wind Speed SW 9 mph
Barometer 29.95 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 19 Aug 6:50 am CDT
Extended Forecast for

Irving IL

  • Today

    Today: Showers and thunderstorms, mainly before 9am.  High near 79. Calm wind.  Chance of precipitation is 80%.

    High: 79 °F

    Showers then
    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 64. Calm wind.  Chance of precipitation is 30%.

    Low: 64 °F

    Scattered
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms, mainly before 9am. High near 79. Calm wind. Chance of precipitation is 80%.
Tonight
Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 62. Calm wind.
Friday
Sunny, with a high near 84. Light and variable wind.
Friday Night
Mostly clear, with a low around 64.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 81.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Irving IL
 39.22°N 89.41°W (Elev. 653 ft)
6:21 am CDT Aug 19, 2026
7am CDT Aug 19, 2026-6pm CDT Aug 25, 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