Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

76°F

24°C

Humidity 82%
Wind Speed S 12 G 21 mph
Barometer 30.09 in (1018.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 18 Jun 11:53 am EDT
Extended Forecast for

4 Miles N Louisville TN

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 86. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm.  High near 83. Southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers then
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am.  Cloudy, then gradually becoming partly cloudy, with a low around 67. West wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%.

    Low: 67 °F

    T-storms
    Likely then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 92.

    High: 92 °F

    Hot

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 70. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Juneteenth
Showers and thunderstorms, mainly before 5pm, then showers and possibly a thunderstorm after 5pm. High near 83. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 67. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 87. Calm wind.
Friday Night
Mostly clear, with a low around 66. Calm wind.
Saturday
Sunny and hot, with a high near 90. Calm wind.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny and hot, with a high near 92.
Sunday Night
Mostly clear, with a low around 71.
Monday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
Monday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Louisville TN
 35.88°N 84.06°W (Elev. 899 ft)
12:30 pm EDT Jun 18, 2025
12pm EDT Jun 18, 2025-6pm EDT Jun 24, 2025
 
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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