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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

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

Lat: 36.48°NLon: 82.4°WElev: 1519ft.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 30.06 in (1015.2 mb)
Dewpoint 68°F (20°C)
Visibility 4.00 mi
Last update 18 Aug 4:53 am EDT
Extended Forecast for

Walnut Hill TN

  • Today

    Today: Mostly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 68. North wind around 5 mph becoming calm.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. East wind around 5 mph becoming calm.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 67. Southeast wind around 5 mph becoming calm.

    Low: 67 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 67. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of thunderstorms, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 68. North wind around 5 mph becoming calm.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. East wind around 5 mph becoming calm.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 67. Southeast wind around 5 mph becoming calm.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 88. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 67. Northeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Thursday
A slight chance of thunderstorms, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Walnut Hill TN
 36.58°N 82.26°W (Elev. 1798 ft)
Last Update:
2:02 am EDT Aug 18, 2025
Forecast Valid:
5am EDT Aug 18, 2025-6pm EDT Aug 24, 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