Clemmons weather in September

In September, Clemmons sees average daytime highs of 80°F and overnight lows near 62°F, with 3.9 in of rain across 9.1 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 84°F in the first days to 76°F by the end. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels muggy.

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 Clemmons's 4th-clearest and 9th-windiest month. For the whole year in context, see Clemmons's year-round climate.

Daytime high
80°
4th warmest
Overnight low
62°
9th coldest
Rainfall
3.9 in
9.1 wet days
Daylight
12 h 12 min
6:09 AM – 6:23 PM
Cloud cover
54%
4th clearest
Wind
5 mph
9th windiest
Solar energy
4.5 kWh/m²
Travel score
6.6
out of 10

Clemmons is town in North Carolina, United States.

Density
635/km²
people per km²
Founded
1802

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 84°F in the first days to 76°F by the end.

A typical September day in Clemmons reaches about 80°F in the afternoon and slips back to 62°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 72°F and 89°F. Set against its neighbours, September runs about 6°F cooler than August and about 10°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18567
28466
38466
48466
58465
68365
78365
88365
98364
108264
118264
128263
138163
148163
158162
168062
178062
188062
197961
207961
217961
227860
237860
247860
257759
267759
277758
287658
297658
307657

How September really feels in Clemmons

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.

Clemmons weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan49° / 32°3.69.51.59.82.1
Feb53° / 34°3.28.91.510.63.0
Mar61° / 41°4.3100.811.75.1
Apr70° / 49°3.79.5012.96.6
May78° / 58°3.410.9013.96.6
Jun85° / 66°3.411.9014.45.0
Jul88° / 70°3.513.8014.24.0
Aug86° / 69°3.511.2013.44.8
Sep80° / 62°3.99.1012.26.6
Oct70° / 50°3.47011.17.2
Nov60° / 40°3.37.70.110.15.2
Dec52° / 34°3.78.80.69.62.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35644
45644
55644
65644
75644
85644
95743
105743
115743
125644
135644
145644
155545
165446
175347
185347
195248
205149
215149
225149
235248
245248
255347
265446
275446
285545
295644
305743

Chance of precipitation in September

Any precipitation

Clemmons gets around 3.9 in of rain over 9.1 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 31% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
330
429
529
629
728
828
928
1027
1127
1227
1327
1428
1528
1629
1729
1830
1931
2031
2131
2231
2331
2431
2530
2629
2728
2828
2927
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 26% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1615244015
2716253815
3816253714
4917263514
51018263313
61119263212
71220273012
81320272911
91421272810
10152127279
11162127278
12172127278
13192127267
14202127266
15212127266
16222226265
17222226255
18232226254
19242225254
20252225244
21262225243
22282224243
23292223233
24312223223
25322222212
26342221212
27362221202
28372220182
29392220172
30412219162

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
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

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 5:57 AM to 6:21 AM, and sunset from 6:45 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:576:45
212.85:586:44
312.75:596:42
412.76:006:41
512.66:006:39
612.66:016:38
712.66:026:36
812.56:036:35
912.56:046:33
1012.56:046:32
1112.46:056:30
1212.46:066:29
1312.36:076:27
1412.36:086:26
1512.36:086:24
1612.26:096:23
1712.26:106:21
1812.16:116:20
1912.16:126:18
2012.16:126:16
2112.06:136:15
2212.06:146:13
2312.06:156:12
2411.96:166:10
2511.96:166:09
2611.86:176:07
2711.86:186:06
2811.86:196:04
2911.76:206:03
3011.76:216:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.5 kWh/m².

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 6.17 kWh/m² in June across the year — September's 4.5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.9Bright
84.8Bright
94.8Bright
104.8Bright
114.7Bright
124.7Bright
134.6Bright
144.6Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.3Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.0Bright
304.0Bright
Planning a trip in September

Is September a good time to visit Clemmons?

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

6.6
Sightseeing
2nd-best month of the year
6.8
Beach & pool
1st-best month of the year

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

What to pack for Clemmons in September

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

In September, Clemmons sees daytime highs around 80°F and nights near 62°F. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Clemmons 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 Clemmons peaks around July 13 at about 10 (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 13UV 10Dec 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 Clemmons 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 Clemmons is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1718 µg/m³Dec 138 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar12Good
Apr12Good
May14Moderate
Jun17Moderate
Jul18Moderate
Aug17Moderate
Sep13Moderate
Oct9Good
Nov8Good
Dec8Good
Location & terrain

Where is Clemmons?

Clemmons sits at 36.0°N, 80.4°W, 840 ft above sea level, in United States. The nearest listed city is Winston-Salem, 9.3 mi away.

Topography around Clemmons

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

Within 2 miles, the terrain around Clemmons has only modest variations in elevation — a maximum elevation change of 226 ft around an average of 787 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 476 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,586 ft.

The land around Clemmons is covered by trees (66%) and grassland (21%) within 2 miles, trees (65%) and grassland (23%) within 10 miles, and trees (75%) within 50 miles.

2 miles
226 ft
10 miles
476 ft
50 miles
3,586 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Winston-Salem 9.3 mi · Lexington 16 mi · Kernersville 19 mi · Thomasville 19 mi · High Point 22 mi · Salisbury 25 mi · Statesville 33 mi · Greensboro 33 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 Clemmons (36.0215°, -80.382°, elevation 840 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).