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 >

Hazardous Weather Conditions

Current conditions at

Marshall County Airport (KC75)

Lat: 41.02°NLon: 89.39°WElev: 545ft.

Fair

70°F

21°C

Humidity 92%
Wind Speed S 3 mph
Barometer 29.93 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 19 Aug 4:35 am CDT
Extended Forecast for

Standard IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm.  Patchy fog before 9am.  Otherwise, partly sunny, with a high near 80. Calm wind becoming northeast around 5 mph.

    High: 80 °F

    Patchy Fog
    then Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers between 7pm and 8pm.  Partly cloudy, with a low around 62. Calm wind becoming north around 5 mph.  Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming northeast around 5 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Calm wind becoming southeast around 5 mph.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 80. Chance of precipitation is 30%.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of thunderstorms before 7pm.  Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

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

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 80. Calm wind becoming northeast around 5 mph.
Tonight
A slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 62. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 79. Calm wind becoming northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 62. Calm wind becoming southeast around 5 mph.
Friday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Friday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Standard IL
 41.26°N 89.18°W (Elev. 702 ft)
2:56 am CDT Aug 19, 2026
4am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database