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

95°F

35°C

Humidity 41%
Wind Speed Vrbl 5 mph
Barometer 30.21 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 16 Sep 5:10 pm CDT
Extended Forecast for

Watertown TN

Heat Advisory September 16, 05:41pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 05:41pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 104. Calm wind becoming west around 5 mph in the afternoon.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 97. Heat index values as high as 105. Calm wind becoming north around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 70. Northeast wind around 5 mph becoming calm.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, sunny, with a high near 96. Calm wind becoming west around 5 mph.

    High: 96 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 96. South wind around 5 mph becoming west in the afternoon.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 72. Calm wind.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 104. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 72. Calm wind.
Friday
Sunny and hot, with a high near 97. Heat index values as high as 105. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 70. Northeast wind around 5 mph becoming calm.
Saturday
Patchy fog before 7am. Otherwise, sunny, with a high near 96. Calm wind becoming west around 5 mph.
Saturday Night
Partly cloudy, with a low around 71. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 96. South wind around 5 mph becoming west in the afternoon.
Sunday Night
Partly cloudy, with a low around 70. Calm wind becoming south southeast around 5 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 68.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 66.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Watertown TN
 36.11°N 86.12°W (Elev. 699 ft)
Last Update:
1:31 pm CDT Sep 16, 2026
Forecast Valid:
5pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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