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

Hazardous Weather Conditions

Current conditions at

Lebanon Municipal Airport (KM54)

Lat: 36.19°NLon: 86.32°WElev: 588ft.

Fair

93°F

34°C

Humidity 47%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 2 Sep 11:35 am CDT
Extended Forecast for

Watertown TN

Heat Advisory until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until September 4, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 97 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 74. Calm wind.

    Low: 74 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 98. Calm wind.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Calm wind becoming north around 5 mph in the afternoon.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind.
Tonight
Clear, with a low around 74. Calm wind.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind.
Thursday Night
Mostly clear, with a low around 74. Calm wind.
Friday
Sunny and hot, with a high near 98. Calm wind.
Friday Night
Mostly clear, with a low around 73. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 69. Calm wind.
Sunday
Sunny, with a high near 93. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 67.
Labor Day
Sunny, with a high near 93.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown TN
 36.09°N 86.12°W (Elev. 699 ft)
Last Update:
4:56 am CDT Sep 2, 2026
Forecast Valid:
11am CDT Sep 2, 2026-6pm CDT Sep 8, 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