Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

77°F

25°C

Humidity 85%
Wind Speed Calm
Barometer 29.94 in (1012.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 27 Jul 12:53 am EDT
Extended Forecast for

2 Miles ESE Lenoir City TN

  • Overnight

    Overnight: A 30 percent chance of showers, mainly after 4am.  Mostly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Chance
    Showers

  • Monday

    Monday: A 10 percent chance of showers before 8am.  Mostly cloudy, then gradually becoming sunny and hot, with a high near 90. Heat index values as high as 99. Calm wind.

    High: 90 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm.  Mostly sunny through mid morning, then becoming cloudy and hot, with a high near 91. Heat index values as high as 103. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    High: 91 °F

    Chance
    Showers then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly before 8pm.  Partly cloudy, with a low around 72. West wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. North wind around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 73. Calm wind.
Monday
A 10 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny and hot, with a high near 90. Heat index values as high as 99. Calm wind.
Monday Night
Mostly clear, with a low around 75. Calm wind.
Tuesday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Mostly sunny through mid morning, then becoming cloudy and hot, with a high near 91. Heat index values as high as 103. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 72. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 68. North wind around 5 mph.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 67.
Friday
Mostly sunny, with a high near 87.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 70.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Lenoir City TN
 35.8°N 84.24°W (Elev. 814 ft)
1:06 am EDT Jul 27, 2026
1am EDT Jul 27, 2026-6pm EDT Aug 2, 2026
 
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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