Heavy Rainfall and Severe Thunderstorms in the Midwest and Southwest; Heat Continues in the Southern U.S.

Heavy to excessive rainfall could bring flooding today through Thursday across parts of the central Plains into the Midwest and southern Arizona and New Mexico. Scattered strong to severe thunderstorms may impact parts of eastern Nebraska into western Iowa later today into early evening. Heat Advisories remain in place across much of east Texas into the mid-Mississippi Valley today and Tuesday. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

87°F

31°C

Humidity 43%
Wind Speed SE 17 mph
Barometer 30.03 in (1015.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 14 Sep 4:51 pm CDT
Extended Forecast for

2 Miles SW Brooklyn IL

Heat Advisory September 15, 11:00am until September 15, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Mostly clear, with a low around 74. Southeast wind 7 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Scattered showers and thunderstorms, mainly after 3pm.  Mostly sunny and hot, with a high near 98. Heat index values as high as 105. South wind 6 to 8 mph becoming southwest in the afternoon.  Chance of precipitation is 50%.

    High: 98 °F

    Sunny then
    Scattered
    T-storms

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 76. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 40%.

    Low: 76 °F

    Scattered
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 1pm.  Mostly sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming south around 5 mph.

    High: 96 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. Light south wind.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Thursday Night

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

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Friday Night

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

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Southeast wind 7 to 10 mph.
Tuesday
Scattered showers and thunderstorms, mainly after 3pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 105. South wind 6 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 50%.
Tuesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming south around 5 mph.
Wednesday Night
Mostly clear, with a low around 76. Light south wind.
Thursday
Sunny and hot, with a high near 98.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny, with a high near 96.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Brooklyn IL
 38.62°N 90.2°W (Elev. 446 ft)
2:31 pm CDT Sep 14, 2026
5pm CDT Sep 14, 2026-6pm CDT Sep 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database