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

Thunderstorms and Widespread Rainfall Across the Southern Plains

Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Greeneville-Greene County Municipal Airport (KGCY)

Lat: 36.2°NLon: 82.81°WElev: 1608ft.

Fog/Mist

54°F

12°C

Humidity 94%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 52°F (11°C)
Visibility 3.00 mi
Last update 20 Nov 1:30 am EST
Extended Forecast for

Erwin TN

  • Overnight

    Overnight: Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 70. Calm wind becoming west around 5 mph.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly between 1am and 4am. Low around 56. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 72. Calm wind becoming west around 5 mph in the afternoon.

    High: 72 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. Calm wind becoming west around 5 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Mostly cloudy, with a high near 66. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 66 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. Northwest wind around 5 mph becoming calm.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 50. Calm wind.
Thursday
Partly sunny, with a high near 70. Calm wind becoming west around 5 mph.
Thursday Night
Showers, mainly between 1am and 4am. Low around 56. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 72. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 58. Calm wind becoming west around 5 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Saturday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Mostly cloudy, with a high near 66. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 45. Northwest wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 65.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 49.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 64.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Erwin TN
 36.14°N 82.42°W (Elev. 1726 ft)
Last Update:
12:31 am EST Nov 20, 2025
Forecast Valid:
1am EST Nov 20, 2025-6pm EST Nov 26, 2025
 
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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