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

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

A Few Clouds

87°F

31°C

Humidity 61%
Wind Speed W 5 mph
Barometer 30.07 in (1016.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 17 Aug 12:53 pm EDT
Extended Forecast for

2 Miles ESE Lenoir City TN

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 93. Heat index values as high as 97. Calm wind.

    High: 93 °F

    Hot

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 7pm and 9pm. Mostly clear, with a low around 73. Calm wind. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 93 °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: Sunny and hot, with a high near 93. Calm wind.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92. Calm wind.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 93. Heat index values as high as 97. Calm wind.
Tonight
A slight chance of showers and thunderstorms between 7pm and 9pm. Mostly clear, with a low around 73. Calm wind. Chance of precipitation is 20%.
Monday
Sunny and hot, with a high near 93. Heat index values as high as 101. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 72. Northeast wind around 5 mph becoming calm.
Tuesday
Sunny and hot, with a high near 93. Calm wind.
Tuesday Night
Mostly clear, with a low around 73. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 92. Calm wind.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 73.
Thursday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 71.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Lenoir City TN
 35.8°N 84.24°W (Elev. 814 ft)
Last Update:
1:06 pm EDT Aug 17, 2025
Forecast Valid:
1pm EDT Aug 17, 2025-6pm EDT Aug 23, 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