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

Hazardous Weather Conditions

Current conditions at

Athens McMinn County Airport (KMMI)

Lat: 35.4°NLon: 84.56°WElev: 874ft.

Fair

93°F

34°C

Humidity 44%
Wind Speed Vrbl 3 G 12 mph
Barometer 30.15 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 18 Sep 2:35 pm EDT
Extended Forecast for

Watts Bar Dam TN

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Sunny and hot, with a high near 95. Heat index values as high as 105. Calm wind. Chance of precipitation is 40%.

    High: 95 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.

    Low: 71 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 94. Heat index values as high as 103. Calm wind.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. Calm wind becoming south around 5 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. Calm wind.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    Showers

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Sunny and hot, with a high near 95. Heat index values as high as 105. Calm wind. Chance of precipitation is 40%.
Tonight
Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 94. Heat index values as high as 103. Calm wind.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Calm wind.
Sunday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93. Calm wind becoming south around 5 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Calm wind.
Monday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. Calm wind.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 66. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 63. Chance of precipitation is 60%.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Watts Bar Dam TN
 35.61°N 84.78°W (Elev. 692 ft)
Last Update:
2:40 pm EDT Sep 18, 2026
Forecast Valid:
2pm EDT Sep 18, 2026-6pm EDT Sep 24, 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