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

Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Hazardous Weather Conditions

Current conditions at

Greeneville-Greene County Municipal Airport (KGCY)

Lat: 36.2°NLon: 82.81°WElev: 1608ft.

81°F

27°C

Humidity 79%
Wind Speed Vrbl 6 mph
Barometer 30.09 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 13 Aug 11:55 am EDT
Extended Forecast for

Greeneville TN

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. West wind around 5 mph.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between 2am and 5am. Mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.

    High: 88 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.

    High: 90 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 91.

    High: 91 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. West wind around 5 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly between 2am and 5am. Mostly cloudy, with a low around 71. Calm wind.
Friday
A 40 percent chance of showers and thunderstorms, mainly before 4pm. Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 20%.
Saturday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. Calm wind.
Sunday
Mostly sunny and hot, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 73.
Monday
A 40 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 91.
Monday Night
A 50 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 70.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greeneville TN
 36.15°N 82.84°W (Elev. 1535 ft)
Last Update:
8:56 am EDT Aug 13, 2026
Forecast Valid:
12pm EDT Aug 13, 2026-6pm EDT Aug 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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