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

Heat Continues Across the Southern Plains and Gulf Coast; Heavy Rainfall from the Tennessee Valley to Southeast on Friday

Hazardous heat will continue across the Southern Plains, Gulf Coast and Desert Southwest through the weekend. Additional heat will build into the Great Basin and Northern Plains this weekend. A stalled front is expected to bring periods of heavy to excessive rainfall and flooding from the Tennessee Valley to the Southeast U.S on Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

74°F

23°C

Humidity 94%
Wind Speed W 6 mph
Barometer 30.08 in (1017.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 24 Jul 5:53 am EDT
Extended Forecast for

Seymour TN

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Slight Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 85. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 69. Northwest wind around 5 mph becoming calm.

    Low: 69 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 84. Calm wind becoming west around 5 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm. Mostly sunny, with a high near 87. Calm wind. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 69. Calm wind.
Friday
Showers and thunderstorms likely, mainly before 2pm. Mostly cloudy, with a high near 85. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 69. Northwest wind around 5 mph becoming calm.
Saturday
A chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 84. Calm wind becoming west around 5 mph. Chance of precipitation is 30%.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 70. Calm wind.
Sunday
A chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm. Mostly sunny, with a high near 87. Calm wind. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 70. Calm wind.
Monday
Mostly sunny, with a high near 89.
Monday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Seymour TN
 35.88°N 83.78°W (Elev. 1073 ft)
Last Update:
2:26 am EDT Jul 24, 2026
Forecast Valid:
5am EDT Jul 24, 2026-6pm EDT Jul 30, 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