Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Louisville Muhammad Ali International Airport (KSDF)

Lat: 38.17°NLon: 85.74°WElev: 500ft.

Fair

86°F

30°C

Humidity 63%
Wind Speed S 3 mph
Barometer 30.02 in (1015.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 4 Sep 9:56 am EDT
Extended Forecast for

2 Miles NW Louisville KY

Heat Advisory September 4, 10:47am until September 5, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 4, 10:47am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 77. Light and variable wind.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms between 3pm and 4pm.  Mostly sunny and hot, with a high near 96. Heat index values as high as 105. Calm wind becoming west around 6 mph in the afternoon.  Chance of precipitation is 20%.

    High: 96 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 72. Northeast wind 3 to 5 mph.  Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 89. Northeast wind 6 to 8 mph.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 107. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 77. Light and variable wind.
Saturday
A slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny and hot, with a high near 96. Heat index values as high as 105. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Northeast wind 3 to 5 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 89. Northeast wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 65.
Labor Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Louisville KY
 38.24°N 85.78°W (Elev. 420 ft)
7:00 am EDT Sep 4, 2026
10am EDT Sep 4, 2026-6pm EDT Sep 10, 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