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.

75°F

24°C

Humidity 89%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 18 Aug 8:55 pm EDT
Extended Forecast for

5 Miles SSW Fall Branch TN

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Areas Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 2pm.  Mostly sunny through mid morning, then becoming cloudy, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.  Chance of precipitation is 70%.

    High: 84 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am.  Mostly cloudy, with a low around 64. Calm wind.  Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers 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 63.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 64. Calm wind.
Wednesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 86. Calm wind.
Wednesday Night
Mostly clear, with a low around 66. Calm wind.
Thursday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny through mid morning, then becoming cloudy, with a high near 86. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. Calm wind.
Friday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%.
Saturday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 20%.
Saturday Night
A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 83.
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:
5 Miles SSW Fall Branch TN
 36.37°N 82.67°W (Elev. 1699 ft)
7:06 pm EDT Aug 18, 2026
9pm EDT Aug 18, 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