National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Fair

72°F

22°C

Humidity 91%
Wind Speed Calm
Barometer 30.19 in (1021.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 18 Sep 5:53 am EDT
Extended Forecast for

4 Miles SW Tallassee TN

  • Today

    Today: Sunny and hot, with a high near 95. Heat index values as high as 105. Calm wind becoming north around 5 mph.

    High: 95 °F

    Hot

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind becoming north around 5 mph.

    High: 93 °F

    Hot

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 70. Calm wind becoming southeast around 5 mph.

    Low: 70 °F

    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Southeast wind around 5 mph becoming calm. Chance of precipitation is 40%.

    High: 91 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Calm wind becoming southeast around 5 mph.

    Low: 69 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Calm wind. Chance of precipitation is 50%.

    High: 91 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 88. Chance of precipitation is 80%.

    High: 88 °F

    Chance
    Showers then
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 95. Heat index values as high as 105. Calm wind becoming north around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 71. Calm wind.
Saturday
Sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind becoming north around 5 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 70. Calm wind becoming southeast around 5 mph.
Sunday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Southeast wind around 5 mph becoming calm. Chance of precipitation is 40%.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Calm wind becoming southeast around 5 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Calm wind. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 88. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 66. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 82. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Tallassee TN
 35.51°N 83.99°W (Elev. 1188 ft)
Last Update:
2:26 am EDT Sep 18, 2026
Forecast Valid:
6am EDT Sep 18, 2026-6pm EDT Sep 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation