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.

Overcast

86°F

30°C

Humidity 57%
Wind Speed SW 7 mph
Barometer 29.92 in (1011.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 21 Sep 6:53 pm EDT
Extended Forecast for

2 Miles SW Mascot TN

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Increasing clouds, with a low around 68. Calm wind. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 2am, then a chance of showers. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm, mainly after 2pm. High near 81. Calm wind. Chance of precipitation is 80%.

    High: 81 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 62. North wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 78. Calm wind. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Friday Night

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

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms. Increasing clouds, with a low around 68. Calm wind. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and thunderstorms likely before 2am, then a chance of showers. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm, mainly after 2pm. High near 81. Calm wind. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 62. North wind around 5 mph becoming calm. Chance of precipitation is 80%.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 78. Calm wind. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 59. Northeast wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Mascot TN
 36.04°N 83.79°W (Elev. 866 ft)
Last Update:
7:06 pm EDT Sep 21, 2026
Forecast Valid:
7pm EDT Sep 21, 2026-6pm EDT Sep 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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