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

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

85°F

29°C

Humidity 40%
Wind Speed Vrbl 5 mph
Barometer 30.01 in (1015.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 18 Sep 4:53 pm EDT
Extended Forecast for

5 Miles S Karns TN

  • Tonight

    Tonight: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 63. Calm wind.
Friday
Sunny, with a high near 88. Calm wind.
Friday Night
Partly cloudy, with a low around 64. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Calm wind.
Saturday Night
Mostly clear, with a low around 62. Calm wind.
Sunday
Mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph.
Sunday Night
Partly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Karns TN
 35.9°N 84.11°W (Elev. 938 ft)
Last Update:
1:31 pm EDT Sep 18, 2025
Forecast Valid:
5pm EDT Sep 18, 2025-6pm EDT Sep 25, 2025
 
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