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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

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

Lat: 36.48°NLon: 82.4°WElev: 1519ft.

Overcast

65°F

18°C

Humidity 70%
Wind Speed SW 14 mph
Barometer 30.06 in (1016.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 25 Dec 4:53 pm EST
Extended Forecast for

Jonesborough TN

  • Christmas Day

    Christmas Day: A 20 percent chance of showers. Mostly cloudy, with a high near 66. West wind around 5 mph.

    High: 66 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 3am. Patchy fog after 5am. Otherwise, cloudy, with a low around 55. South wind around 5 mph.

    Low: 55 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A 30 percent chance of showers, mainly before 9am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 65. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 65 °F

    Chance
    Showers and
    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 56. West wind around 10 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 67. West wind around 5 mph becoming calm in the afternoon.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49. Calm wind becoming southeast around 5 mph.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 67. South wind around 5 mph.

    High: 67 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Monday

    Monday: Rain showers likely before 5pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 70%.

    High: 57 °F

    Breezy.
    Showers
    Likely then
    Rain/Snow
    Likely

Detailed Forecast

Christmas Day
A 20 percent chance of showers. Mostly cloudy, with a high near 66. West wind around 5 mph.
Tonight
A 30 percent chance of showers, mainly before 3am. Patchy fog after 5am. Otherwise, cloudy, with a low around 55. South wind around 5 mph.
Friday
A 30 percent chance of showers, mainly before 9am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 65. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 56. West wind around 10 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 67. West wind around 5 mph becoming calm in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. Calm wind becoming southeast around 5 mph.
Sunday
Mostly cloudy, with a high near 67. South wind around 5 mph.
Sunday Night
A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 47.
Monday
Rain showers likely before 5pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 70%.
Monday Night
A chance of rain and snow showers before 9pm, then a slight chance of snow showers between 9pm and 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 33.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
Sunny, with a high near 40.
Wednesday Night
Mostly clear, with a low around 22.
New Year's Day
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jonesborough TN
 36.31°N 82.48°W (Elev. 1841 ft)
Last Update:
12:31 pm EST Dec 25, 2025
Forecast Valid:
5pm EST Dec 25, 2025-6pm EST Jan 1, 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