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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. 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

71°F

22°C

Humidity 51%
Wind Speed SW 10 G 16 mph
Barometer 29.98 in (1012.9 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 21 Mar 11:53 am EDT
Extended Forecast for

Jonesborough TN

  • This Afternoon

    This Afternoon: Areas of smoke. Mostly cloudy, with a high near 73. West wind 5 to 10 mph.

    High: 73 °F

    Areas Smoke

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 2am. Areas of smoke before 1am. Partly cloudy, with a low around 56. Southwest wind around 5 mph.

    Low: 56 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 55 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm. Partly sunny, with a high near 62. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 62 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 37. North wind around 5 mph.

    Low: 37 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. East wind around 5 mph becoming south in the afternoon.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 61.

    High: 61 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Areas of smoke. Mostly cloudy, with a high near 73. West wind 5 to 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 2am. Areas of smoke before 1am. Partly cloudy, with a low around 56. Southwest wind around 5 mph.
Sunday
Mostly sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm. Partly sunny, with a high near 62. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 37. North wind around 5 mph.
Tuesday
Partly sunny, with a high near 63. East wind around 5 mph becoming south in the afternoon.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 44.
Wednesday
A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 61.
Wednesday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 47.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 70.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jonesborough TN
 36.28°N 82.46°W (Elev. 1798 ft)
Last Update:
10:36 am EDT Mar 21, 2026
Forecast Valid:
12pm EDT Mar 21, 2026-6pm EDT Mar 27, 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