Morristown weather in August

In August, Morristown sees average daytime highs of 85°F and overnight lows near 67°F, with 3.1 in of rain across 11.2 wet days and about 13.4 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 85°F through the month. The sky is clear or mostly clear about 33% of the time in August, and the air most often feels muggy.

Daylight stretches from about 13 h 54 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Morristown's 4th-clearest and 12th-windiest month. For the whole year in context, see Morristown's year-round climate.

Daytime high
85°
2nd warmest
Overnight low
67°
11th coldest
Rainfall
3.1 in
11.2 wet days
Daylight
13 h 24 min
5:56 AM – 7:19 PM
Cloud cover
55%
4th clearest
Wind
4 mph
12th windiest
Solar energy
5.51 kWh/m²
Travel score
5.1
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 August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 85°F through the month.

A typical August day in Morristown reaches about 85°F in the afternoon and slips back to 67°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 91°F. Set against its neighbours, August runs on par with July and about 5°F warmer than September.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18568
28568
38568
48568
58568
68568
78568
88568
98568
108568
118568
128568
138568
148568
158568
168567
178567
188567
198567
208567
218567
228567
238567
248567
258567
268567
278566
288566
298566
308466
318466

How August really feels in Morristown

Once humidity and wind are folded in, August 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

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

Morristown weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 11th-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35248
45248
55248
65347
75347
85347
95347
105446
115446
125446
135545
145545
155545
165644
175644
185644
195743
205743
215743
225842
235842
245842
255842
265842
275842
285842
295941
305941
315941

Chance of precipitation in August

Any precipitation

Morristown gets around 3.1 in of rain over 11.2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
246
345
444
544
643
742
842
942
1041
1141
1241
1341
1440
1540
1639
1738
1837
1936
2035
2134
2233
2332
2432
2531
2631
2730
2830
2929
3029
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
115184729
215184728
315194728
415194827
515204826
615204826
715204825
815214825
925214824
1026214824
1126214824
1226214823
1326214823
1426214922
1527224921
1627225020
1727225019
1828225117
1928235116
2028235215
2128235215
2228235314
2328245313
2429245312
2529245312
26210245311
27310255210
28311255110
2931226499
3041326489
3141427478

Wind in August

Winds average 4 mph in August, the calmest month.

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

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
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
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 54 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 5:43 AM to 6:08 AM, and sunset from 7:35 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:437:35
213.85:447:34
313.85:457:33
413.85:467:32
513.75:477:31
613.75:477:30
713.75:487:29
813.75:497:28
913.65:507:27
1013.65:517:26
1113.65:527:25
1213.55:527:24
1313.55:537:23
1413.55:547:21
1513.45:557:20
1613.45:567:19
1713.45:567:18
1813.35:577:16
1913.35:587:15
2013.25:597:14
2113.26:007:13
2213.26:017:11
2313.16:017:10
2413.16:027:08
2513.16:037:07
2613.06:047:06
2713.06:057:04
2813.06:057:03
2912.96:067:01
3012.96:077:00
3112.86:086:59

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.51 kWh/m².

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 — August's 5.51 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in August

Hazard calendar for Morristown

In seasonPeak

In August, Morristown sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

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 August a good time to visit Morristown?

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

5.1
Sightseeing
6th-best month of the year
6.8
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Morristown for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Morristown in August

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

In August, Morristown sees daytime highs around 85°F and nights near 67°F. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Morristown in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). 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 August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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
August 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).