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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Current conditions at

Bristol / Johnson / Kingsport, Tri-City Regional Airport (KTRI)

Lat: 36.48°NLon: 82.4°WElev: 1519ft.

Partly Cloudy

84°F

29°C

Humidity 55%
Wind Speed SW 9 mph
Barometer 29.97 in (1012.3 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 22 Aug 3:53 pm EDT
Extended Forecast for

5 Miles NNW Walnut Hill TN

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Sunny, with a high near 81. West wind around 10 mph.

    High: 81 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly before 1am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 62. West wind around 5 mph becoming calm in the evening. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 79. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57. West wind around 5 mph becoming calm.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Calm wind becoming west around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. Calm wind becoming northeast around 5 mph after midnight.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. Northeast wind around 5 mph becoming calm.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.

    High: 84 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 81. West wind around 10 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly before 1am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 62. West wind around 5 mph becoming calm in the evening. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 79. Light west wind increasing to 5 to 10 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 57. West wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 80. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 58. Calm wind becoming northeast around 5 mph after midnight.
Tuesday
Sunny, with a high near 82. Northeast wind around 5 mph becoming calm.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Walnut Hill TN
 36.65°N 82.28°W (Elev. 1991 ft)
Last Update:
2:26 pm EDT Aug 22, 2026
Forecast Valid:
4pm EDT Aug 22, 2026-6pm EDT Aug 29, 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