Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Partly Cloudy

85°F

29°C

Humidity 68%
Wind Speed SW 10 mph
Barometer 30.05 in (1016.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 13 Aug 10:53 am EDT
Extended Forecast for

2 Miles ENE Knoxville TN

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny and hot, with a high near 91. Heat index values as high as 101. Southwest wind around 5 mph.

    High: 91 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Mostly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm.  Mostly sunny and hot, with a high near 93. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 95. Calm wind.

    High: 95 °F

    Mostly Sunny
    then 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 75. Calm wind.  Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 95. Calm wind becoming west around 5 mph in the afternoon.

    High: 95 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 96.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny and hot, with a high near 91. Heat index values as high as 101. Southwest wind around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 74. Calm wind.
Friday
A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny and hot, with a high near 93. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 75. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. Calm wind.
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 75. Calm wind. Chance of precipitation is 30%.
Sunday
Mostly sunny and hot, with a high near 95. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96.
Monday Night
A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Partly cloudy, with a low around 74. Chance of precipitation is 40%.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Knoxville TN
 35.98°N 83.91°W (Elev. 896 ft)
8:56 am EDT Aug 13, 2026
11am EDT Aug 13, 2026-6pm EDT Aug 19, 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