Lebanon weather in December

In December, Lebanon sees average daytime highs of 50°F and overnight lows near 35°F, with 5.1 in of precipitation across 11 wet days and about 9.6 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 53°F in the first days to 48°F by the end. The sky is clear or mostly clear about 28% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 42 min at the start of December to 9 h 36 min by month's end. Set against the rest of the year, December is Lebanon's 11th-clearest and 5th-windiest month. For the whole year in context, see Lebanon's year-round climate.

Daytime high
50°
11th warmest
Overnight low
35°
3rd coldest
Precipitation
5.1 in
11 wet days
Daylight
9 h 30 min
6:55 AM – 4:28 PM
Cloud cover
65%
11th clearest
Wind
7 mph
5th windiest
Solar energy
1.98 kWh/m²
Travel score
2.2
out of 10

Lebanon is city in Wilson County, Tennessee, United States.

Density
303/km²
people per km²
Founded
1801

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 53°F in the first days to 48°F by the end.

A typical December day in Lebanon reaches about 50°F in the afternoon and slips back to 35°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 37°F and 63°F. Set against its neighbours, December runs about 9°F cooler than November and about 3°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
15437
25337
35337
45337
55237
65236
75236
85136
95136
105136
115136
125035
135035
145035
155035
165035
175035
184935
194935
204934
214934
224934
234934
244934
254834
264834
274834
284834
294834
304833
314833

How December really feels in Lebanon

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 30 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
30
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Lebanon weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan47° / 32°4.310.91.79.81.5
Feb51° / 34°4.710.71.710.62.4
Mar60° / 41°5.111.90.711.74.7
Apr70° / 50°5.011012.96.2
May78° / 60°4.812.6013.96.3
Jun85° / 68°4.012.5014.44.9
Jul88° / 71°4.112.5014.24.2
Aug87° / 70°3.210.5013.44.6
Sep82° / 63°3.37.9012.26.5
Oct71° / 51°3.57.90.111.17.1
Nov59° / 41°4.08.80.310.14.8
Dec50° / 35°5.1110.89.62.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24357
34258
44159
53961
63961
73862
83763
93763
103763
113664
123565
133565
143565
153565
163565
173565
183565
193565
203565
213565
223565
233664
243664
253664
263664
273664
283664
293664
303664
313664

Chance of precipitation in December

Any precipitationSnow

Lebanon gets around 5.1 in of rain and snow over 11 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 36% and peaks near 37% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1352
2352
3362
4362
5362
6362
7372
8372
9372
10372
11372
12372
13372
14372
15372
16372
17372
18372
19362
20362
21362
22363
23363
24353
25353
26353
27353
28354
29354
30354
31364

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19451
29451
39451
49451
59451
69451
79451
89451
99451
109541
119541
129541
139541
149631
159631
169631
179631
189631
199631
209631
219631
229631
239631
249631
259631
269541
279541
289541
299451
309451
319451

Wind in December

Winds average 7 mph in December.

Across December, daily wind ranges from about 7 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 42 min at the start of December to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:43 AM to 7:01 AM, and sunset from 4:26 PM to 4:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.76:434:26
29.76:444:26
39.76:454:26
49.76:464:26
59.76:474:26
69.66:484:26
79.66:494:26
89.66:494:26
99.66:504:26
109.66:514:26
119.66:524:27
129.66:524:27
139.66:534:27
149.66:544:27
159.66:544:27
169.56:554:28
179.56:554:28
189.56:564:28
199.56:574:29
209.56:574:29
219.56:584:30
229.56:584:30
239.56:594:31
249.56:594:31
259.56:594:32
269.57:004:32
279.57:004:33
289.57:014:33
299.67:014:34
309.67:014:35
319.67:014:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.98 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.98 kWh/m² to a high of 6.19 kWh/m² in June across the year — December's 1.98 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.1Moderate
22.1Moderate
32.1Moderate
42.1Moderate
52.0Moderate
62.0Moderate
72.0Moderate
82.0Dim
92.0Dim
102.0Dim
111.9Dim
121.9Dim
131.9Dim
141.9Dim
151.9Dim
161.9Dim
171.9Dim
181.9Dim
191.9Dim
201.9Dim
211.9Dim
221.9Dim
232.0Dim
242.0Dim
252.0Dim
262.0Dim
272.0Dim
282.0Dim
292.0Dim
302.0Moderate
312.0Moderate
Planning a trip in December

Is December a good time to visit Lebanon?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.2
Sightseeing
11th-best month of the year
0.0
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Lebanon.

What to pack for Lebanon in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Lebanon sees daytime highs around 50°F and nights near 35°F. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

UV index in Lebanon in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lebanon peaks around July 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 11UV 9Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov4Moderate
Dec2Moderate

Air quality in Lebanon in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Lebanon is worst in July — around 18 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1518 µg/m³Dec 176 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar9Good
Apr10Good
May13Moderate
Jun15Moderate
Jul18Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov6Good
Dec6Good
Location & terrain

Where is Lebanon?

Lebanon sits at 36.2°N, 86.3°W, 528 ft above sea level, in United States. The nearest listed city is Mount Juliet, 12 mi away.

Topography around Lebanon

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Lebanon.

Within 2 miles, the terrain around Lebanon has only modest variations in elevation — a maximum elevation change of 233 ft around an average of 568 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 804 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,919 ft.

The land around Lebanon is covered by grassland (39%), trees (34%) and artificial surfaces (25%) within 2 miles, trees (50%) and grassland (43%) within 10 miles, and trees (57%) and grassland (29%) within 50 miles.

2 miles
233 ft
10 miles
804 ft
50 miles
1,919 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Mount Juliet 12 mi · Gallatin 15 mi · Hermitage 19 mi · Hendersonville 19 mi · Smyrna 20 mi · La Vergne 21 mi · Goodlettsville 25 mi · Murfreesboro 25 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Lebanon (36.2081°, -86.2911°, elevation 528 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).