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

Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

Current conditions at

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

Lat: 36.48°NLon: 82.4°WElev: 1519ft.

Mostly Cloudy

71°F

22°C

Humidity 96%
Wind Speed Vrbl 3 mph
Barometer 30.18 in (1019.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 15 Aug 8:53 am EDT
Extended Forecast for

Johnson City TN

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 91. Calm wind becoming north around 5 mph.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 92. Calm wind becoming north around 5 mph.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind.
Tonight
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Calm wind.
Saturday Night
Mostly clear, with a low around 66. Calm wind.
Sunday
Sunny and hot, with a high near 91. Calm wind becoming north around 5 mph.
Sunday Night
Mostly clear, with a low around 68. Calm wind.
Monday
Sunny and hot, with a high near 92. Calm wind becoming north around 5 mph.
Monday Night
Mostly clear, with a low around 68.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly clear, with a low around 67.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnson City TN
 36.34°N 82.4°W (Elev. 1699 ft)
Last Update:
7:07 am EDT Aug 15, 2025
Forecast Valid:
9am EDT Aug 15, 2025-6pm EDT Aug 21, 2025
 
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