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

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.

70°F

21°C

Humidity 94%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 22 Aug 8:35 am EDT
Extended Forecast for

5 Miles NNW Max Patch NC

  • Today

    Today: Patchy fog before 10am. Otherwise, sunny, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Calm wind becoming northwest around 5 mph in the morning.

    High: 79 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 81. Calm wind becoming northwest around 5 mph.

    High: 81 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, sunny, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon.
Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Partly cloudy, with a low around 64. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 79. Calm wind becoming northwest around 5 mph in the morning.
Sunday Night
Partly cloudy, with a low around 60. Calm wind.
Monday
Mostly sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 60. Calm wind.
Tuesday
A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 81. Calm wind becoming northwest around 5 mph.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Max Patch NC
 35.85°N 83.01°W (Elev. 1890 ft)
Last Update:
7:06 am EDT Aug 22, 2026
Forecast Valid:
9am EDT Aug 22, 2026-6pm EDT Aug 28, 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