Kingsport weather in September

In September, Kingsport sees average daytime highs of 78°F and overnight lows near 58°F, with 3.2 in of rain across 8.9 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 81°F in the first days to 74°F by the end. The sky is clear or mostly clear about 41% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Kingsport's 2nd-clearest and 10th-windiest month. For the whole year in context, see Kingsport's year-round climate.

Daytime high
78°
4th warmest
Overnight low
58°
9th coldest
Rainfall
3.2 in
8.9 wet days
Daylight
12 h 12 min
6:18 AM – 6:31 PM
Cloud cover
52%
2nd clearest
Wind
4 mph
10th windiest
Solar energy
4.59 kWh/m²
Travel score
7.0
out of 10

Kingsport is city in Sullivan, Hawkins, and Washington counties in Tennessee, United States.

Density
389/km²
people per km²
Founded
1822

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 81°F in the first days to 74°F by the end.

A typical September day in Kingsport reaches about 78°F in the afternoon and slips back to 58°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 69°F and 86°F. Set against its neighbours, September runs about 5°F cooler than August and about 10°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18163
28163
38162
48162
58162
68062
78061
88061
98061
108060
117960
127960
137960
147859
157859
167859
177858
187758
197758
207657
217657
227657
237656
247556
257555
267455
277455
287454
297354
307353

How September really feels in Kingsport

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Kingsport weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan45° / 29°4.1123.59.81.0
Feb49° / 32°3.911.53.310.61.9
Mar58° / 38°4.612.81.911.73.9
Apr67° / 47°4.111.90.412.95.9
May73° / 55°3.913.2013.96.3
Jun80° / 62°3.513.9014.45.9
Jul83° / 66°3.814.6014.25.2
Aug82° / 65°3.111.4013.46.0
Sep78° / 58°3.28.9012.27.0
Oct67° / 47°2.98.60.111.16.6
Nov57° / 37°3.39.40.610.14.1
Dec48° / 32°4.211.72.59.51.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26139
36139
46139
56139
66238
76238
86238
96337
106337
116238
126238
136139
146139
156040
165941
175842
185743
195743
205644
215644
225644
235644
245644
255743
265743
275842
285842
295941
305941

Chance of precipitation in September

Any precipitation

Kingsport gets around 3.2 in of rain over 8.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
330
429
529
629
729
828
928
1028
1128
1227
1327
1427
1528
1628
1728
1829
1929
2030
2130
2230
2330
2430
2529
2629
2729
2828
2928
3028

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
191737361
2101936351
3112036331
4122135321
5132234301
6142433280
7162532260
8172731250
9182831230
10192930210
11213029200
12223129190
13233128180
14243227170
15253327160
16263326150
17273425140
18283425130
19293424130
20313424120
21323323110
22343323100
2336322290
2439312290
2541302180
2643292070
2746281970
2848271860
2951261760
3053251750

Wind in September

Winds average 4 mph in September.

Across September, daily wind ranges from about 3 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
13calm
23calm
33calm
43calm
53calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 6:05 AM to 6:29 AM, and sunset from 6:54 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:056:54
212.86:066:53
312.76:076:51
412.76:086:50
512.76:096:48
612.66:106:47
712.66:106:45
812.56:116:44
912.56:126:42
1012.56:136:41
1112.46:146:39
1212.46:146:38
1312.36:156:36
1412.36:166:35
1512.36:176:33
1612.26:186:31
1712.26:196:30
1812.16:196:28
1912.16:206:27
2012.16:216:25
2112.06:226:24
2212.06:236:22
2312.06:236:20
2411.96:246:19
2511.96:256:17
2611.86:266:16
2711.86:276:14
2811.86:286:13
2911.76:296:11
3011.76:296:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.59 kWh/m².

For context, solar energy here swings from a low near 2.07 kWh/m² to a high of 6.07 kWh/m² in June across the year — September's 4.59 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
74.9Bright
84.9Bright
94.9Bright
104.8Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.5Bright
184.5Bright
194.5Bright
204.4Bright
214.4Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Is September a good time to visit Kingsport?

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

7.0
Sightseeing
1st-best month of the year
6.4
Beach & pool
2nd-best month of the year

September is one of the better times to visit Kingsport for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kingsport in September

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

In September, Kingsport sees daytime highs around 78°F and nights near 58°F. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Kingsport in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kingsport 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 Kingsport in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Kingsport 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 196 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar9Good
Apr11Good
May13Moderate
Jun16Moderate
Jul18Moderate
Aug15Moderate
Sep11Good
Oct7Good
Nov7Good
Dec6Good
Location & terrain

Where is Kingsport?

Kingsport sits at 36.5°N, 82.6°W, 1,211 ft above sea level, in United States. The nearest listed city is Johnson City, 20 mi away.

Topography around Kingsport

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

Within 2 miles, the terrain around Kingsport has significant variations in elevation — a maximum elevation change of 1,106 ft around an average of 1,312 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,182 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,312 ft.

The land around Kingsport is covered by trees (46%), artificial surfaces (27%) and grassland (24%) within 2 miles, trees (62%) and grassland (32%) within 10 miles, and trees (77%) and grassland (21%) within 50 miles.

2 miles
1,106 ft
10 miles
2,182 ft
50 miles
5,312 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Johnson City 20 mi · Bristol 21 mi · Bristol 21 mi · Greeneville 30 mi · Morristown 47 mi · Boone 55 mi · Asheville 65 mi · Lenoir 72 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 Kingsport (36.5484°, -82.5618°, elevation 1,211 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).