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

Heavy to Excessive Rainfall in the Southeast U.S.; Critical Fire Weather in the Northern Plains and Upper Midwest

A slow-moving storm system will continue to produce widespread heavy showers and thunderstorms which may bring excessive rainfall and flooding as it tracks across the Southeast and Mid-Atlantic regions today into Wednesday. Gusty winds and dry fuels under potential record setting temperatures will support widespread critical fire weather in the northern Plains and Upper Midwest today. Read More >

Hazardous Weather Conditions

Current conditions at

Greeneville-Greene County Municipal Airport (KGCY)

Lat: 36.2°NLon: 82.81°WElev: 1608ft.

Overcast

68°F

20°C

Humidity 83%
Wind Speed NE 7 mph
Barometer 30.06 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 12 May 11:35 am EDT
Extended Forecast for

Greeneville TN

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 74. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 60. Southeast wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. Patchy fog before 8am. High near 77. Southeast wind around 5 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Showers and
    Patchy Fog
    then T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 60%.

    Low: 57 °F

    T-storms
    Likely then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 76. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%.

    High: 76 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am, then a slight chance of showers and thunderstorms after 2am. Low around 60. Calm wind. Chance of precipitation is 80%.

    Low: 60 °F

    Showers then
    Slight Chance
    T-storms

  • Thursday

    Thursday: A slight chance of thunderstorms before 8am. Mostly sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 10%.

    High: 83 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely between 2pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 74. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 1am, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 60. Southeast wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers and thunderstorms before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. Patchy fog before 8am. High near 77. Southeast wind around 5 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers and thunderstorms likely before 11pm, then a chance of showers. Mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 60%.
Wednesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 76. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am, then a slight chance of showers and thunderstorms after 2am. Low around 60. Calm wind. Chance of precipitation is 80%.
Thursday
A slight chance of thunderstorms before 8am. Mostly sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 10%.
Thursday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 66.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Greeneville TN
 36.15°N 82.84°W (Elev. 1535 ft)
Last Update:
9:41 am EDT May 12, 2025
Forecast Valid:
12pm EDT May 12, 2025-6pm EDT May 18, 2025
 
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