Dangerous Heat Wave from the Midwest to East Coast; Severe Thunderstorms Across Portions of the Upper Midwest

A dangerous heat wave will persist through this weekend. Widespread warnings and advisories for the heat cover most of the eastern two-thirds of the U.S. Heat indices will surge past 100 degrees and even rise above 110 in many locations. Northwest of this dome of heat, severe thunderstorms with the possibility of strong tornadoes and widespread significant wind damage are possible into tonight. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

90°F

32°C

Humidity 71%
Wind Speed SW 7 G 18 mph
Barometer 29.94 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 19 Jul 1:47 pm CDT
Extended Forecast for

Maryville IL

Excessive Heat Warning until July 20, 08:00pm
Click here for hazard details and duration
Excessive Heat Warning
  •  
    Excessive Heat Warning until July 20, 08:00pm

    NOW until
    8:00pm Sat

    Excessive Heat Warning

  • This
    Afternoon

    This Afternoon: Sunny, with a high near 95. Heat index values as high as 109. South wind 9 to 11 mph.

    Sunny

    High: 95 °F

  • Tonight

    Tonight: Clear, with a low around 77. South wind 6 to 10 mph.

    Clear

    Low: 77 °F

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 105. South wind 7 to 10 mph.

    Sunny

    High: 94 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 77. South wind 3 to 6 mph.

    Mostly Clear

    Low: 77 °F

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 91. Light and variable wind becoming west around 6 mph in the morning.

    Slight Chance
    T-storms then
    Chance
    T-storms

    High: 91 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 67.

    Chance
    T-storms

    Low: 67 °F

  • Monday

    Monday: Mostly sunny, with a high near 81.

    Mostly Sunny

    High: 81 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 60.

    Mostly Clear

    Low: 60 °F

Detailed Forecast

This Afternoon
Sunny, with a high near 95. Heat index values as high as 109. South wind 9 to 11 mph.
Tonight
Clear, with a low around 77. South wind 6 to 10 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 105. South wind 7 to 10 mph.
Saturday Night
Mostly clear, with a low around 77. South wind 3 to 6 mph.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Light and variable wind becoming west around 6 mph in the morning.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 85.
Click Map For Forecast
Point Forecast:
Maryville IL
 38.72°N 89.94°W (Elev. 554 ft)
1:27 pm CDT Jul 19, 2019
2pm CDT Jul 19, 2019-6pm CDT Jul 25, 2019
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database