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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

77°F

25°C

Humidity 82%
Wind Speed SW 5 mph
Barometer 30.14 in (1019.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 16 Aug 1:53 am EDT
Extended Forecast for

4 Miles NW Walland TN

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog between 8am and 9am. Otherwise, mostly sunny and hot, with a high near 91. Heat index values as high as 98. Calm wind.

    High: 91 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 91. Heat index values as high as 97. Calm wind becoming north around 5 mph.

    High: 91 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. Northeast wind around 5 mph becoming calm.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 71. Calm wind.
Saturday
Patchy fog between 8am and 9am. Otherwise, mostly sunny and hot, with a high near 91. Heat index values as high as 98. Calm wind.
Saturday Night
Mostly clear, with a low around 71. Calm wind.
Sunday
Sunny and hot, with a high near 91. Heat index values as high as 97. Calm wind becoming north around 5 mph.
Sunday Night
Mostly clear, with a low around 72. Calm wind.
Monday
Sunny and hot, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 72. Northeast wind around 5 mph becoming calm.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92.
Tuesday Night
A 10 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Walland TN
 35.77°N 83.88°W (Elev. 899 ft)
Last Update:
1:46 am EDT Aug 16, 2025
Forecast Valid:
2am EDT Aug 16, 2025-6pm EDT Aug 22, 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