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

Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

Greeneville-Greene County Municipal Airport (KGCY)

Lat: 36.2°NLon: 82.81°WElev: 1608ft.

Fair

68°F

20°C

Humidity 78%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 21 Jun 1:15 am EDT
Extended Forecast for

4 Miles WNW Afton TN

  • Overnight

    Overnight: Clear, with a low around 60. Calm wind.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 89. Calm wind becoming west around 5 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. Calm wind becoming southeast around 5 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 87. West wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

    High: 87 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 66. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 66 °F

    T-storms then
    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. West wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 63. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Clear, with a low around 60. Calm wind.
Sunday
Sunny, with a high near 89. Calm wind becoming west around 5 mph.
Sunday Night
Mostly clear, with a low around 67. Calm wind becoming southeast around 5 mph.
Monday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 87. West wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Monday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 66. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Tuesday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. West wind 5 to 10 mph. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 63. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Afton TN
 36.22°N 82.83°W (Elev. 1188 ft)
Last Update:
1:06 am EDT Jun 21, 2026
Forecast Valid:
1am EDT Jun 21, 2026-6pm EDT Jun 27, 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