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

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

70°F

21°C

Humidity 93%
Wind Speed NE 7 mph
Barometer 30.13 in (1019.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 4 Oct 10:53 am EDT
Extended Forecast for

4 Miles WSW Mascot TN

  • Today

    Today: A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 5pm. Cloudy, with a high near 78. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 8pm. Cloudy, with a low around 59. Calm wind becoming north around 5 mph.

    Low: 59 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 78. Northeast wind 5 to 10 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. Northeast wind around 5 mph.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. Northeast wind around 5 mph becoming calm.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Calm wind becoming southwest around 5 mph.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 5pm. Cloudy, with a high near 78. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 10 percent chance of showers and thunderstorms before 8pm. Cloudy, with a low around 59. Calm wind becoming north around 5 mph.
Monday
Sunny, with a high near 78. Northeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 51. Northeast wind around 5 mph.
Tuesday
Sunny, with a high near 80. Northeast wind around 5 mph becoming calm.
Tuesday Night
Mostly clear, with a low around 53. Calm wind.
Wednesday
Sunny, with a high near 81. Calm wind becoming southwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 52.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 53.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mascot TN
 36.04°N 83.82°W (Elev. 1001 ft)
Last Update:
7:06 am EDT Oct 4, 2026
Forecast Valid:
10am EDT Oct 4, 2026-6pm EDT Oct 10, 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