Severe Thunderstorms and Flash Flooding in the Central U.S.; A Dangerous Heatwave Coming to the West

A slow moving cold front will bring multiple rounds of widespread heavy rain, localized flash flooding, and severe thunderstorms from the central Plains into the Great Lakes through Saturday. A dangerous heatwave with record breaking and triple digit temperatures is expected this weekend into next week over the Northwest U.S. Excessive Heat Watches and Warnings have been issued. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

79°F

26°C

Humidity 79%
Wind Speed SE 8 mph
Barometer 29.93 in (1013.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 24 Jun 11:53 pm CDT
Extended Forecast for

2 Miles SE Cahokia IL

  • Overnight

    Overnight: Showers and thunderstorms, mainly after 3am.  Low around 75. South wind 9 to 11 mph.  Chance of precipitation is 80%.

    T-storms

    Low: 75 °F

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 9am.  Mostly cloudy, with a high near 91. Heat index values as high as 101. South wind 9 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 60%.

    T-storms
    Likely

    High: 91 °F

  • Friday
    Night

    Friday Night: Showers and thunderstorms, mainly before 2am.  Low around 75. South wind around 11 mph.  Chance of precipitation is 80%.

    T-storms

    Low: 75 °F

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 14 mph, with gusts as high as 24 mph.

    Chance
    T-storms

    High: 93 °F

  • Saturday
    Night

    Saturday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74. South wind 7 to 11 mph.

    Chance
    T-storms

    Low: 74 °F

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 90. Chance of precipitation is 70%.

    Chance
    T-storms then
    T-storms
    Likely

    High: 90 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 72.

    Chance
    T-storms

    Low: 72 °F

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 88. Chance of precipitation is 60%.

    T-storms
    Likely

    High: 88 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 71.

    Chance
    T-storms

    Low: 71 °F

Detailed Forecast

Overnight
Showers and thunderstorms, mainly after 3am. Low around 75. South wind 9 to 11 mph. Chance of precipitation is 80%.
Friday
Showers and thunderstorms likely, mainly before 9am. Mostly cloudy, with a high near 91. Heat index values as high as 101. South wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms, mainly before 2am. Low around 75. South wind around 11 mph. Chance of precipitation is 80%.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 14 mph, with gusts as high as 24 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind 7 to 11 mph.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 90. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Monday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Tuesday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Click Map For Forecast
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
12:11 am CDT Jun 25, 2021
12am CDT Jun 25, 2021-6pm CDT Jun 30, 2021
 
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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