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

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 >

Hazardous Weather Conditions

Current conditions at

Athens McMinn County Airport (KMMI)

Lat: 35.4°NLon: 84.56°WElev: 874ft.

Mostly Cloudy

72°F

22°C

Humidity 100%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 23 Aug 12:55 am EDT
Extended Forecast for

2 Miles ENE Watts Bar Dam TN

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, sunny, with a high near 89. Calm wind becoming north around 5 mph.

    High: 89 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Slight Chance
    Showers

  • Tuesday Night

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

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 66. Calm wind.
Sunday
Patchy fog before 7am. Otherwise, sunny, with a high near 89. Calm wind becoming north around 5 mph.
Sunday Night
Partly cloudy, with a low around 63. Calm wind.
Monday
Mostly sunny, with a high near 89. Calm wind.
Monday Night
Partly cloudy, with a low around 63. Calm wind.
Tuesday
A 20 percent chance of showers before 2pm. Mostly sunny, with a high near 89. Calm wind.
Tuesday Night
Mostly clear, with a low around 65. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Thursday
A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90.
Friday Night
A slight chance of thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 10%.
Saturday
Mostly sunny and hot, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Watts Bar Dam TN
 35.63°N 84.75°W (Elev. 764 ft)
Last Update:
1:06 am EDT Aug 23, 2026
Forecast Valid:
1am EDT Aug 23, 2026-6pm EDT Aug 29, 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