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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Oak Ridge (KOQT)

Lat: 36.02°NLon: 84.23°WElev: 915ft.

A Few Clouds

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in (1015.9 mb)
Dewpoint 70°F (21°C)
Visibility 8.00 mi
Last update 28 Aug 6:53 am EDT
Extended Forecast for

Karns TN

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.

    High: 88 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 67. North wind around 5 mph.

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 90. Northeast wind around 5 mph becoming calm in the morning.

    High: 90 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 91. Calm wind.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93.

    High: 93 °F

    Hot

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 67. North wind around 5 mph.
Saturday
Sunny and hot, with a high near 90. Northeast wind around 5 mph becoming calm in the morning.
Saturday Night
Partly cloudy, with a low around 69. Calm wind.
Sunday
Mostly sunny and hot, with a high near 90. Calm wind.
Sunday Night
Partly cloudy, with a low around 71. Calm wind.
Monday
Sunny and hot, with a high near 91. Calm wind.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny and hot, with a high near 93.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 94.
Wednesday Night
A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Karns TN
 35.97°N 84.11°W (Elev. 1198 ft)
Last Update:
7:06 am EDT Aug 28, 2026
Forecast Valid:
7am EDT Aug 28, 2026-6pm EDT Sep 3, 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