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

Lebanon Municipal Airport (KM54)

Lat: 36.19°NLon: 86.32°WElev: 588ft.

Fair

86°F

30°C

Humidity 59%
Wind Speed S 5 mph
Barometer 29.95 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 19 Aug 4:50 pm CDT
Extended Forecast for

Lebanon TN

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 71. South wind around 5 mph becoming north northeast after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Partly Cloudy
    then Showers

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 10am. Partly sunny, with a high near 89. Heat index values as high as 98. Southwest wind around 5 mph becoming west northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 70. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A slight chance of showers, with thunderstorms also possible after 1pm. Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 98. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms and
    Areas Fog

  • Friday Night

    Friday Night: Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 8am. Otherwise, sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 90 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. North wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. Calm wind becoming north around 5 mph in the afternoon.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66. North northeast wind around 5 mph becoming calm.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 71. South wind around 5 mph becoming north northeast after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and thunderstorms likely, mainly before 10am. Partly sunny, with a high near 89. Heat index values as high as 98. Southwest wind around 5 mph becoming west northwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 70. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 98. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly clear, with a low around 68. Calm wind.
Saturday
Areas of fog before 8am. Otherwise, sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 67. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 89. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 66. North northeast wind around 5 mph becoming calm.
Monday
Mostly sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 66.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 91.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lebanon TN
 36.21°N 86.31°W (Elev. 545 ft)
Last Update:
1:31 pm CDT Aug 19, 2026
Forecast Valid:
5pm CDT Aug 19, 2026-6pm CDT Aug 26, 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