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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

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

Lat: 36.48°NLon: 82.4°WElev: 1519ft.

Mostly Cloudy

26°F

-3°C

Humidity 71%
Wind Speed Calm
Barometer 30.25 in (1024.8 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 18 Mar 2:53 am EDT
Extended Forecast for

Jonesborough TN

  • Overnight

    Overnight: Mostly cloudy, with a low around 18. Calm wind.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 45. Calm wind becoming west around 5 mph in the afternoon.

    High: 45 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Calm wind becoming south around 5 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 58. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 58 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.

    High: 67 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. Southwest wind around 5 mph.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 18. Calm wind.
Wednesday
Partly sunny, with a high near 45. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 33. Calm wind becoming south around 5 mph.
Thursday
Mostly cloudy, with a high near 58. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 40. Calm wind.
Friday
Partly sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 49. Southwest wind around 5 mph.
Saturday
Mostly cloudy, with a high near 70.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 76.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 51.
Monday
A 20 percent chance of showers. Mostly cloudy, with a high near 63.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 40.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jonesborough TN
 36.28°N 82.49°W (Elev. 1732 ft)
Last Update:
2:26 am EDT Mar 18, 2026
Forecast Valid:
3am EDT Mar 18, 2026-6pm EDT Mar 24, 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