Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

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 30.02 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 19 Aug 2:15 am EDT
Extended Forecast for

4 Miles SW Greeneville TN

  • Overnight

    Overnight: Areas of fog after 4am.  Otherwise, partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Areas Fog

  • Wednesday

    Wednesday: Areas of fog before 9am.  Otherwise, sunny, with a high near 87. Calm wind becoming northwest around 5 mph.

    High: 87 °F

    Areas Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 5pm.  Cloudy, then gradual clearing during the afternoon, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 66. North wind around 5 mph becoming calm  in the evening.

    Low: 66 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 85. Calm wind becoming west around 5 mph.  Chance of precipitation is 70%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am.  Partly cloudy, with a low around 65. Calm wind.  Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Areas of fog after 4am. Otherwise, partly cloudy, with a low around 64. Calm wind.
Wednesday
Areas of fog before 9am. Otherwise, sunny, with a high near 87. Calm wind becoming northwest around 5 mph.
Wednesday Night
Partly cloudy, with a low around 67. Calm wind.
Thursday
A chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 5pm. Cloudy, then gradual clearing during the afternoon, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. North wind around 5 mph becoming calm in the evening.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Calm wind becoming west around 5 mph. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85.
Saturday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Greeneville TN
 36.11°N 82.87°W (Elev. 1401 ft)
2:26 am EDT Aug 19, 2026
2am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
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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