Showers and Storms in the East; Dangerously Hot and Dry in the West

A front will bring scattered showers and storms to portions of the Central and Eastern US. Severe storms are expected in parts of the Great Plains and Ozarks today. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Elevated wildfire conditions will develop across portions of the Northern/Central Plains and air quality issues will persist in the Northwest. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Light Rain

71°F

22°C

Humidity 90%
Wind Speed S 6 mph
Barometer 30.14 in (1020.1 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 6 Aug 11:53 am CDT
Extended Forecast for

4 Miles SSE Mascoutah IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms, mainly before 2pm. Some of the storms could produce heavy rainfall.  High near 79. West wind around 6 mph becoming south.  Chance of precipitation is 80%.

    High: 79 °F

    Heavy Rain

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 8pm.  Mostly cloudy, with a low around 70. Southeast wind 3 to 5 mph.

    Low: 70 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 3pm.  Mostly sunny, with a high near 88. Heat index values as high as 100. Light and variable wind becoming southwest around 6 mph in the morning.

    High: 88 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 71. Light southwest wind.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 91.

    High: 91 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and thunderstorms, mainly before 2pm. Some of the storms could produce heavy rainfall. High near 79. West wind around 6 mph becoming south. Chance of precipitation is 80%.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 70. Southeast wind 3 to 5 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 88. Heat index values as high as 100. Light and variable wind becoming southwest around 6 mph in the morning.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 71. Light southwest wind.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89. Calm wind.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 72.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Mascoutah IL
 38.47°N 89.78°W (Elev. 420 ft)
11:41 am CDT Aug 6, 2026
12pm CDT Aug 6, 2026-6pm CDT Aug 12, 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