Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

65°F

18°C

Humidity 97%
Wind Speed Calm
Barometer 30.06 in (1017.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Aug 12:54 am CDT
Extended Forecast for

Eldred IL

  • Overnight

    Overnight: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 86. Calm wind becoming southwest around 6 mph in the morning.

    High: 86 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms.  Low around 68. Southeast wind around 5 mph becoming light and variable.  Chance of precipitation is 80%.

    Low: 68 °F

    Partly Cloudy
    then T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before noon.  Mostly cloudy, with a high near 82. West wind around 5 mph becoming light and variable  in the afternoon.  Chance of precipitation is 60%.

    High: 82 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 64. Light northeast wind.

    Low: 64 °F

    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am.  Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 61. Calm wind.
Tuesday
Increasing clouds, with a high near 86. Calm wind becoming southwest around 6 mph in the morning.
Tuesday Night
Showers and thunderstorms. Low around 68. Southeast wind around 5 mph becoming light and variable. Chance of precipitation is 80%.
Wednesday
Showers and thunderstorms likely, mainly before noon. Mostly cloudy, with a high near 82. West wind around 5 mph becoming light and variable in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light northeast wind.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 84.
Friday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 64.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Eldred IL
 39.29°N 90.57°W (Elev. 430 ft)
12:36 am CDT Aug 18, 2026
1am CDT Aug 18, 2026-6pm CDT Aug 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

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