Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Hazardous Weather Conditions

Current conditions at

Greeneville-Greene County Municipal Airport (KGCY)

Lat: 36.2°NLon: 82.81°WElev: 1608ft.

Fair

86°F

30°C

Humidity 49%
Wind Speed Calm
Barometer 30.15 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 21 Jun 6:35 pm EDT
Extended Forecast for

Greeneville TN

  • Tonight

    Tonight: Partly cloudy, with a low around 67. South wind around 5 mph becoming calm.

    Low: 67 °F

    Partly Cloudy

  • 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.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93. Calm wind becoming north around 5 mph.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 67. South wind around 5 mph becoming calm.
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.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 90. Calm wind.
Monday Night
Mostly clear, with a low around 69. Calm wind.
Tuesday
Sunny and hot, with a high near 93. Calm wind becoming north around 5 mph.
Tuesday Night
Partly cloudy, with a low around 69. Calm wind.
Wednesday
Sunny and hot, with a high near 94.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.
Friday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Greeneville TN
 36.17°N 82.81°W (Elev. 1598 ft)
4:12 pm EDT Jun 21, 2025
7pm EDT Jun 21, 2025-6pm EDT Jun 28, 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