National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

Perryville Regional Airport (KPCD)

Lat: 37.87°NLon: 89.86°WElev: 372ft.

Mostly Cloudy

83°F

28°C

Humidity 62%
Wind Speed S 6 mph
Barometer 30.07 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 18 Aug 11:35 am CDT
Extended Forecast for

Prairie du Rocher IL

  • Today

    Today: Sunny, with a high near 87. Light south wind.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Scattered showers and thunderstorms after 4am. Increasing clouds, with a low around 69. South wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Clear then
    Scattered
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 10am. High near 85. South wind 5 to 9 mph becoming light and variable in the afternoon. Chance of precipitation is 80%.

    High: 85 °F

    T-storms then
    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Light north wind. Chance of precipitation is 70%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 83 °F

    Slight Chance
    T-storms

  • Thursday Night

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

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Light south wind.
Tonight
Scattered showers and thunderstorms after 4am. Increasing clouds, with a low around 69. South wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday
Showers and thunderstorms, mainly before 10am. High near 85. South wind 5 to 9 mph becoming light and variable in the afternoon. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Light north wind. Chance of precipitation is 70%.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 84.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prairie du Rocher IL
 38.08°N 90.09°W (Elev. 397 ft)
Last Update:
5:21 am CDT Aug 18, 2026
Forecast Valid:
11am CDT Aug 18, 2026-6pm CDT Aug 24, 2026
 
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