Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Athens McMinn County Airport (KMMI)

Lat: 35.4°NLon: 84.56°WElev: 874ft.

Fair

82°F

28°C

Humidity 62%
Wind Speed Vrbl 3 mph
Barometer 30.07 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 21 Aug 11:35 am EDT
Extended Forecast for

2 Miles NNE Watts Bar Dam TN

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm.  Mostly sunny, with a high near 88. Heat index values as high as 98. Calm wind.

    High: 88 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 90. Calm wind becoming northwest around 5 mph.

    High: 90 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, then a chance of showers after 2am.  Partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 8am.  Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 88. Heat index values as high as 98. Calm wind.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 68. Calm wind.
Saturday
Sunny and hot, with a high near 90. Calm wind becoming northwest around 5 mph.
Saturday Night
Mostly clear, with a low around 65. Calm wind.
Sunday
Sunny, with a high near 88. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 62. Calm wind.
Monday
Mostly sunny, with a high near 87. Calm wind.
Monday Night
A slight chance of showers and thunderstorms, then a chance of showers after 2am. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Tuesday
A chance of showers, with thunderstorms also possible after 8am. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Tuesday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Watts Bar Dam TN
 35.63°N 84.78°W (Elev. 741 ft)
7:06 am EDT Aug 21, 2026
11am EDT Aug 21, 2026-6pm EDT Aug 27, 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