Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Mostly Cloudy

86°F

30°C

Humidity 49%
Wind Speed W 12 mph
Barometer 30.04 in (1015.9 mb)
Dewpoint 65°F (18°C)
Visibility 8.00 mi
Heat Index88°F (31°C)
Last update 19 Aug 1:53 pm EDT
Extended Forecast for

4 Miles SW Corryton TN

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms after 5am.  Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 3pm.  Mostly cloudy, then gradually becoming sunny, with a high near 87. Southwest wind around 5 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before midnight.  Mostly cloudy, with a low around 68. Calm wind.  Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph.  Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm.  Partly cloudy, with a low around 67. Calm wind.  Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely then
    Partly Cloudy

  • Saturday

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

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Calm wind.
Tonight
A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 69. Calm wind.
Thursday
A chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 60%.
Friday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Corryton TN
 36.09°N 83.87°W (Elev. 1099 ft)
1:31 pm EDT Aug 19, 2026
2pm EDT Aug 19, 2026-6pm EDT Aug 25, 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