Morristown weather in December

In December, Morristown sees average daytime highs of 49°F and overnight lows near 33°F, with 4.1 in of precipitation across 11.1 wet days and about 9.6 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 52°F in the first days to 48°F by the end. The sky is clear or mostly clear about 27% 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 Morristown's 11th-clearest and 5th-windiest month. For the whole year in context, see Morristown's year-round climate.

Daytime high
49°
11th warmest
Overnight low
33°
3rd coldest
Precipitation
4.1 in
11.1 wet days
Daylight
9 h 30 min
7:43 AM – 5:16 PM
Cloud cover
65%
11th clearest
Wind
5 mph
5th windiest
Solar energy
2.04 kWh/m²
Travel score
2.1
out of 10

Morristown is city in Tennessee, United States.

Density
415/km²
people per km²
Founded
1787

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 52°F in the first days to 48°F by the end.

A typical December day in Morristown reaches about 49°F in the afternoon and slips back to 33°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 37°F and 62°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)
15335
25335
35235
45235
55235
65135
75134
85134
95034
105034
115034
125034
135034
144933
154933
164933
174933
184933
194933
204933
214833
224832
234832
244832
254832
264832
274832
284832
294832
304832
314732

How December really feels in Morristown

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 31 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
31
wind chill below the day's low

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

Morristown weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan47° / 30°4.010.92.29.81.4
Feb51° / 33°3.911.22.410.62.3
Mar59° / 40°4.412.10.911.74.4
Apr69° / 48°3.911.1012.96.1
May76° / 57°3.712.2013.96.4
Jun83° / 65°3.313.2014.45.4
Jul86° / 69°4.115014.24.6
Aug85° / 67°3.111.2013.45.1
Sep80° / 61°3.18.7012.26.7
Oct70° / 49°2.98011.16.9
Nov58° / 39°3.49.20.210.14.5
Dec49° / 33°4.111.11.59.62.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24456
34357
44159
54060
63961
73862
83763
93664
103664
113664
123664
133664
143664
153664
163664
173664
183664
193664
203763
213763
223763
233763
243763
253763
263862
273862
283862
293862
303862
313862

Chance of precipitation in December

Any precipitationSnow

Morristown gets around 4.1 in of rain and snow over 11.1 wet days in December. 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 2 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1353
2353
3353
4364
5364
6364
7364
8374
9374
10374
11374
12375
13375
14375
15375
16375
17375
18375
19375
20365
21365
22365
23355
24355
25355
26355
27345
28345
29345
30346
31346

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1973
2973
3973
4973
5973
6973
7973
8982
9982
10982
11982
12982
13982
14982
15991
16991
17991
18991
19991
20982
21982
22982
23982
24982
25982
26982
27982
28973
29973
30973
31973

Wind in December

Winds average 5 mph in December.

Across December, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 7:32 AM to 7:49 AM, and sunset from 5:14 PM to 5:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.77:325:14
29.77:325:14
39.77:335:14
49.77:345:14
59.77:355:14
69.67:365:14
79.67:375:14
89.67:375:14
99.67:385:14
109.67:395:14
119.67:405:15
129.67:405:15
139.67:415:15
149.67:425:15
159.67:425:15
169.57:435:16
179.57:445:16
189.57:445:16
199.57:455:17
209.57:455:17
219.57:465:18
229.57:465:18
239.57:475:19
249.57:475:19
259.57:475:20
269.57:485:20
279.57:485:21
289.57:495:21
299.67:495:22
309.67:495:23
319.67:495:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.04 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.04 kWh/m² to a high of 6.12 kWh/m² in June across the year — December's 2.04 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.2Moderate
22.2Moderate
32.2Moderate
42.1Moderate
52.1Moderate
62.1Moderate
72.1Moderate
82.1Moderate
92.0Moderate
102.0Moderate
112.0Moderate
122.0Moderate
132.0Moderate
142.0Moderate
152.0Moderate
162.0Dim
172.0Dim
182.0Dim
192.0Moderate
202.0Moderate
212.0Moderate
222.0Moderate
232.0Moderate
242.0Moderate
252.0Moderate
262.0Moderate
272.0Moderate
282.0Moderate
292.1Moderate
302.1Moderate
312.1Moderate
Planning a trip in December

Hazard calendar for Morristown

In seasonPeak

None of Morristown's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Morristown sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Morristown?

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

2.1
Sightseeing
11th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Morristown.

What to pack for Morristown in December

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

In December, Morristown sees daytime highs around 49°F and nights near 33°F. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

UV index in Morristown 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 Morristown peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 13UV 10Dec 20UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov4Moderate
Dec2Moderate

Air quality in Morristown 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 Morristown is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1517 µg/m³Dec 226 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar10Good
Apr11Good
May13Moderate
Jun16Moderate
Jul18Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec6Good
Location & terrain

Where is Morristown?

Morristown sits at 36.2°N, 83.3°W, 1,302 ft above sea level, in United States. The nearest listed city is Greeneville, 26 mi away.

Topography around Morristown

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

Within 2 miles, the terrain around Morristown has only modest variations in elevation — a maximum elevation change of 512 ft around an average of 1,355 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,056 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,886 ft.

The land around Morristown is covered by trees (48%) and grassland (32%) within 2 miles, trees (44%) and grassland (40%) within 10 miles, and trees (75%) and grassland (21%) within 50 miles.

2 miles
512 ft
10 miles
1,056 ft
50 miles
5,886 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Greeneville 26 mi · Sevierville 28 mi · Gatlinburg 37 mi · Knoxville 39 mi · Kingsport 47 mi · Maryville 49 mi · Johnson City 53 mi · Farragut 53 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 Morristown (36.214°, -83.2949°, elevation 1,302 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).