Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Current conditions at

Greeneville-Greene County Municipal Airport (KGCY)

Lat: 36.2°NLon: 82.81°WElev: 1608ft.

82°F

28°C

Humidity 66%
Wind Speed Vrbl 3 G 13 mph
Barometer 30.02 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 21 Aug 3:35 pm EDT
Extended Forecast for

Greeneville TN

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly after 5pm.  Sunny, with a high near 84. Southwest wind around 5 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 9pm.  Partly cloudy, with a low around 65. Calm wind.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    T-storms
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 1am.  Increasing clouds, with a low around 63. Southwest wind around 5 mph.  Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 81. West wind around 5 mph.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. West wind around 5 mph becoming calm.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly after 5pm. Sunny, with a high near 84. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Showers and thunderstorms likely before midnight, then a chance of showers between midnight and 1am. Increasing clouds, with a low around 63. Southwest wind around 5 mph. Chance of precipitation is 60%.
Sunday
Mostly sunny, with a high near 81. West wind around 5 mph.
Sunday Night
Mostly clear, with a low around 58. West wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83.
Tuesday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 62.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Greeneville TN
 36.17°N 82.81°W (Elev. 1598 ft)
2:26 pm EDT Aug 21, 2026
3pm EDT Aug 21, 2026-6pm EDT Aug 27, 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