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Lebanon, Tennessee 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Lebanon TN
National Weather Service Forecast for: Lebanon TN
Issued by: National Weather Service Nashville, TN
Updated: 12:31 pm CDT Jul 25, 2025
 
This
Afternoon
This Afternoon: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm.  Mostly sunny, with a high near 94. Heat index values as high as 105. South wind around 5 mph.
Chance
T-storms
Tonight

Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 74. South wind around 5 mph becoming calm  in the evening.
Slight Chance
T-storms then
Partly Cloudy
Saturday

Saturday: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Mostly sunny, with a high near 93. Heat index values as high as 105. South southwest wind around 5 mph.
Sunny then
Chance
T-storms
Saturday
Night
Saturday Night: Mostly clear, with a low around 74. Southwest wind around 5 mph becoming calm  in the evening.
Mostly Clear

Sunday

Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 10am.  Mostly sunny, with a high near 95. Calm wind becoming west southwest around 5 mph in the morning.  Chance of precipitation is 30%.
Chance
T-storms
Sunday
Night
Sunday Night: Mostly clear, with a low around 74. West wind around 5 mph becoming calm.
Mostly Clear

Monday

Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 96. Calm wind becoming west northwest around 5 mph in the afternoon.
Sunny then
Slight Chance
T-storms
Monday
Night
Monday Night: Mostly clear, with a low around 75. Calm wind.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 96. Calm wind becoming north northeast around 5 mph in the afternoon.
Sunny

Hi 94 °F Lo 74 °F Hi 93 °F Lo 74 °F Hi 95 °F Lo 74 °F Hi 96 °F Lo 75 °F Hi 96 °F

Heat Advisory
 

This Afternoon
 
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 94. Heat index values as high as 105. South wind around 5 mph.
Tonight
 
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. South wind around 5 mph becoming calm in the evening.
Saturday
 
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 105. South southwest wind around 5 mph.
Saturday Night
 
Mostly clear, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.
Sunday
 
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 95. Calm wind becoming west southwest around 5 mph in the morning. Chance of precipitation is 30%.
Sunday Night
 
Mostly clear, with a low around 74. West wind around 5 mph becoming calm.
Monday
 
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Calm wind becoming west northwest around 5 mph in the afternoon.
Monday Night
 
Mostly clear, with a low around 75. Calm wind.
Tuesday
 
Sunny, with a high near 96. Calm wind becoming north northeast around 5 mph in the afternoon.
Tuesday Night
 
Mostly clear, with a low around 75.
Wednesday
 
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 97.
Wednesday Night
 
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Thursday
 
Showers and thunderstorms likely. Mostly sunny, with a high near 94. Chance of precipitation is 60%.

 

Forecast from NOAA-NWS for Lebanon TN.

Weather Forecast Discussion
144
FXUS64 KOHX 251705
AFDOHX

Area Forecast Discussion
National Weather Service Nashville TN
1205 PM CDT Fri Jul 25 2025

...New AVIATION...

.KEY MESSAGES...
Updated at 1204 PM CDT Fri Jul 25 2025

- A Heat Advisory is in effect through this evening and
  temperatures are expected to get hotter again Sunday through
  Wednesday of next week.

- Medium chances for afternoon storms this weekend.

- Any storms that develop each afternoon will produce very heavy
  rainfall and frequent lightning, along with the potential for
  localized gusty winds.

&&

.SHORT TERM...
(Rest of today through Saturday)
Issued at 1116 AM CDT Fri Jul 25 2025

A fairly widespread Cu field has developed this morning with less
subsidence compared to previous days. The radar is showing some
showers beginning to pop along the plateau. Temperatures are
about 3- 5 degrees cooler at this point than Wednesday and
yesterday. Look for highs to top out mainly in the low 90s this
afternoon with some locations possibly getting to 94 or 95. For
the most part heat index values will be in the 100-105 range.
Tomorrow looks fairly similar to today with the ridge off to the
east. Scattered showers and storms are expected to develop late in
the morning into the afternoon. Highs will be a degree or two
cooler today. Given the convective coverage and slightly lower
temperatures, I am going to hold off on continuing the Heat
Advisory for Saturday.

&&

.LONG TERM...
(Saturday Night through next Friday)
Issued at 1116 AM CDT Fri Jul 25 2025

As we get into Sunday, the ridge will drift back west and
strengthen. This will send temperatures back into the mid 90s and
even upper 90s by Tuesday and Wednesday. Looking at NBM dew points
during this time frame, they appear to be running a little high
with values in the mid to upper 70s. Achieving upper 90
temperatures with dew points in the mid to upper 70s is hard. I
expect a little more mixing and lower afternoon dew points. All of
this to say, while the NBM is advertising heat indicies in the
110-120 range, I would expect values closer to 105-110.
Regardless, it is going to be dangerously hot with little reprieve
at night with lows in the mid 70s.

As we move into Thursday, the upper high will weaken which will
knock temperatures back a couple of degrees and allow more
convective coverage.

&&

.AVIATION...
(18Z TAFS)
Issued at 1204 PM CDT Fri Jul 25 2025

VFR conditions prevail through the TAF period. Isolated showers
and thunderstorms will continue through early evening, however,
confidence remains too low to have mention in the TAFs. Winds will
generally be southerly at less than 10 knots.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      76  94  76  96 /  10  30  10  30
Clarksville    76  92  76  93 /  20  20  10  20
Crossville     69  88  70  88 /  10  40  10  40
Columbia       74  92  74  94 /  10  30  10  20
Cookeville     72  89  72  91 /  10  30  10  30
Jamestown      70  89  71  90 /  10  30  10  40
Lawrenceburg   72  92  73  93 /  10  30  10  20
Murfreesboro   74  94  74  95 /  10  30  10  30
Waverly        74  91  74  93 /  20  20  10  20

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM CDT this evening for TNZ005>009-023>030-
056>063-075-077-093>095.

&&

$$

SHORT TERM...Reagan
LONG TERM....Reagan
AVIATION.....Clements
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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