Johnson City weather in January

In January, Johnson City sees average daytime highs of 44°F and overnight lows near 28°F, with 4.3 in of precipitation across 13 wet days and about 9.8 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 44°F through the month. The sky is clear or mostly clear about 28% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 36 min at the start of January to 10 h 06 min by month's end. Set against the rest of the year, January is Johnson City's 10th-clearest and 2nd-windiest month. For the whole year in context, see Johnson City's year-round climate.

Daytime high
44°
12th warmest
Overnight low
28°
1st coldest
Precipitation
4.3 in
13 wet days
Daylight
9 h 48 min
7:45 AM – 5:32 PM
Cloud cover
63%
10th clearest
Wind
6 mph
2nd windiest
Solar energy
2.42 kWh/m²
Travel score
0.6
out of 10

Johnson City is city in Washington, Carter, and Sullivan counties in Tennessee, United States.

Density
589/km²
people per km²
Founded
1856

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 44°F through the month.

A typical January day in Johnson City reaches about 44°F in the afternoon and slips back to 28°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 29°F and 58°F. Set against its neighbours, January runs about 3°F cooler than December and about 3°F cooler than February.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14529
24529
34429
44429
54428
64428
74428
84428
94428
104428
114428
124428
134427
144327
154327
164327
174327
184327
194327
204327
214327
224327
234327
244327
254327
264427
274427
284427
294427
304427
314427

How January really feels in Johnson City

Once humidity and wind are folded in, January 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 January is cold — wind chill drags the overnight "feels like" below the raw low.

Johnson City weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan44° / 28°4.3134.99.80.6
Feb47° / 30°3.812.34.810.61.4
Mar55° / 36°4.813.63.411.73.3
Apr64° / 45°4.4131.212.95.4
May71° / 53°4.214.4013.95.9
Jun77° / 61°4.216.4014.45.8
Jul80° / 64°4.217014.25.5
Aug79° / 63°3.814013.46.0
Sep74° / 57°3.610.4012.26.8
Oct65° / 46°3.09.40.311.16.1
Nov55° / 36°3.49.81.210.13.5
Dec47° / 31°4.211.73.89.61.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
43961
53862
63862
73862
83862
93862
103862
113862
123862
133961
144060
154060
164060
174060
184159
194159
204258
214258
224357
234357
244357
254357
264357
274456
284357
294357
304258
314258

Chance of precipitation in January

Any precipitationSnow

Johnson City gets around 4.3 in of rain and snow over 13 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 42% and peaks near 44% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13913
23914
34014
44014
54114
64114
74214
84215
94315
104315
114416
124416
134416
144416
154416
164416
174416
184316
194316
204216
214216
224217
234117
244117
254117
264117
274118
284018
294018
304018
314018

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in January

Winds average 6 mph in January.

Across January, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 36 min at the start of January to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over January. Sunrise moves from 7:46 AM to 7:38 AM, and sunset from 5:20 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.67:465:20
29.67:465:20
39.67:465:21
49.67:465:22
59.67:465:23
69.67:465:23
79.67:465:24
89.67:465:25
99.77:465:26
109.77:465:27
119.77:465:28
129.77:465:28
139.77:465:29
149.77:465:30
159.87:465:31
169.87:455:32
179.87:455:33
189.87:455:34
199.87:445:35
209.97:445:36
219.97:445:37
229.97:435:38
239.97:435:39
2410.07:425:40
2510.07:425:41
2610.07:415:42
2710.07:415:43
2810.17:405:44
2910.17:405:45
3010.17:395:46
3110.17:385:47

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.42 kWh/m².

For context, solar energy here swings from a low near 2.15 kWh/m² to a high of 6.06 kWh/m² in June across the year — January's 2.42 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.2Moderate
22.2Moderate
32.2Moderate
42.2Moderate
52.2Moderate
62.2Moderate
72.2Moderate
82.3Moderate
92.3Moderate
102.3Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.4Moderate
152.4Moderate
162.4Moderate
172.4Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.6Moderate
232.6Moderate
242.6Moderate
252.6Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in January

Is January a good time to visit Johnson City?

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

0.6
Sightseeing
12th-best month of the year
0.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Johnson City.

What to pack for Johnson City in January

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

In January, Johnson City sees daytime highs around 44°F and nights near 28°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 13 days see rain.

a warm layera heavy coatrain gear

UV index in Johnson City in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Johnson City 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
Oct5Moderate
Nov4Moderate
Dec2Moderate

Air quality in Johnson City in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Johnson City is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1618 µg/m³Dec 217 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar10Good
Apr11Good
May13Moderate
Jun16Moderate
Jul18Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec7Good
Location & terrain

Where is Johnson City?

Johnson City sits at 36.3°N, 82.4°W, 1,634 ft above sea level, in United States. The nearest listed city is Kingsport, 20 mi away.

Topography around Johnson City

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

Within 2 miles, the terrain around Johnson City has only modest variations in elevation — a maximum elevation change of 607 ft around an average of 1,719 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,418 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,682 ft.

The land around Johnson City is covered by trees (46%), grassland (27%) and artificial surfaces (27%) within 2 miles, trees (59%) and grassland (35%) within 10 miles, and trees (78%) and grassland (20%) within 50 miles.

2 miles
607 ft
10 miles
2,418 ft
50 miles
5,682 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Kingsport 20 mi · Bristol 22 mi · Bristol 22 mi · Greeneville 29 mi · Boone 39 mi · Asheville 50 mi · Morristown 53 mi · Lenoir 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 Johnson City (36.3134°, -82.3535°, elevation 1,634 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).