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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Greeneville-Greene County Municipal Airport (KGCY)

Lat: 36.2°NLon: 82.81°WElev: 1608ft.

Mostly Cloudy

63°F

17°C

Humidity 73%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 22 Mar 4:55 am EDT
Extended Forecast for

Greeneville TN

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 56. Southwest wind around 5 mph.

    Low: 56 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Mostly Clear
    then Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm. Cloudy through mid morning, then gradual clearing, with a high near 64. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 64 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. Northeast wind around 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 64. East wind around 5 mph becoming southeast in the afternoon.

    High: 64 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. Southeast wind around 5 mph.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers before 2pm. Partly sunny, with a high near 67.

    High: 67 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 8pm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 56. Southwest wind around 5 mph.
Sunday
Sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A slight chance of showers between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 57. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm. Cloudy through mid morning, then gradual clearing, with a high near 64. North wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 39. Northeast wind around 5 mph.
Tuesday
Partly sunny, with a high near 64. East wind around 5 mph becoming southeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 41. Southeast wind around 5 mph.
Wednesday
A 20 percent chance of showers before 2pm. Partly sunny, with a high near 67.
Wednesday Night
A 20 percent chance of showers after 8pm. Mostly cloudy, with a low around 50.
Thursday
A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 75.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 56.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 69.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 39.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greeneville TN
 36.15°N 82.84°W (Elev. 1535 ft)
Last Update:
2:26 am EDT Mar 22, 2026
Forecast Valid:
5am EDT Mar 22, 2026-6pm EDT Mar 28, 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