Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. 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 93%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Last update 21 Aug 4:54 am CDT
Extended Forecast for

4 Miles N Kampsville IL

  • Today

    Today: Patchy fog before 8am.  Otherwise, sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 9pm and midnight.  Mostly clear, with a low around 66. Calm wind.  Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Calm wind becoming north 5 to 7 mph in the morning.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. North wind around 5 mph becoming calm  in the evening.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 81. Light north wind.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 63.

    Low: 63 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 86. Light and variable wind.
Tonight
A slight chance of showers and thunderstorms between 9pm and midnight. Mostly clear, with a low around 66. Calm wind. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 84. Calm wind becoming north 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 61. North wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 81. Light north wind.
Sunday Night
Mostly cloudy, with a low around 60.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Partly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Kampsville IL
 39.36°N 90.63°W (Elev. 489 ft)
4:41 am CDT Aug 21, 2026
5am CDT Aug 21, 2026-6pm CDT Aug 27, 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