Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

76°F

24°C

Humidity 95%
Wind Speed SE 3 mph
Barometer 30.03 in
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Heat Index75°F (24°C)
Last update 15 Aug 4:35 am CDT
Extended Forecast for

Edwardsville IL

Extreme Heat Warning August 15, 04:58am until August 16, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 15, 04:58am until August 16, 09:00pm

    NOW until 9:00pm Sun

    Extreme Heat Warning

  • Overnight

    Low: 76 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 10am.  Partly sunny, with a high near 93. Heat index values as high as 107. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 93 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Calm wind becoming west around 5 mph after midnight.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 93. Heat index values as high as 107. Northwest wind 5 to 8 mph.  Chance of precipitation is 20%.

    High: 93 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am.  Partly cloudy, with a low around 72. North wind 5 to 8 mph.  Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 76. Light south wind.
Saturday
A 20 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 93. Heat index values as high as 107. Light and variable wind becoming south 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 77. Calm wind becoming west around 5 mph after midnight.
Sunday
A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 93. Heat index values as high as 107. Northwest wind 5 to 8 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 72. North wind 5 to 8 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Sunny, with a high near 88.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 82.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 81.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Edwardsville IL
 38.79°N 89.97°W (Elev. 558 ft)
4:51 am CDT Aug 15, 2026
4am CDT Aug 15, 2026-6pm CDT Aug 21, 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