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.

Mostly Cloudy

77°F

25°C

Humidity 88%
Wind Speed N 6 mph
Barometer 30.08 in (1017.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Aug 12:53 am EDT
Extended Forecast for

5 Miles SSE Knoxville TN

  • Overnight

    Overnight: Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny and hot, with a high near 92. Heat index values as high as 103. Calm wind becoming west around 5 mph in the afternoon.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 10 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 93. Heat index values as high as 105. Calm wind.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

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

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and hot, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 94 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. Southwest wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 94.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 73.

    Low: 73 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 74. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 103. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. Heat index values as high as 105. Calm wind.
Saturday Night
Partly cloudy, with a low around 75. Calm wind.
Sunday
Sunny and hot, with a high near 94. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 76. Southwest wind around 5 mph.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 94.
Monday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
Mostly sunny and hot, with a high near 91.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
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:
5 Miles SSE Knoxville TN
 35.91°N 83.92°W (Elev. 1050 ft)
7:06 pm EDT Aug 13, 2026
12am EDT Aug 14, 2026-6pm EDT Aug 20, 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