Danville weather in September

In September, Danville sees average daytime highs of 80°F and overnight lows near 62°F, with 4.0 in of rain across 8.8 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 37% 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 Danville's 5th-clearest and 9th-windiest month. For the whole year in context, see Danville's year-round climate.

Daytime high
80°
4th warmest
Overnight low
62°
9th coldest
Rainfall
4.0 in
8.8 wet days
Daylight
12 h 12 min
6:05 AM – 6:19 PM
Cloud cover
55%
5th clearest
Wind
5 mph
9th windiest
Solar energy
4.41 kWh/m²
Travel score
6.6
out of 10

Danville is independent city in Virginia, United States.

Density
370/km²
people per km²
Founded
1792

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 Danville 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 71°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
28567
38466
48466
58466
68365
78365
88365
98365
108264
118264
128264
138163
148163
158163
168062
178062
188062
197962
207961
217861
227861
237860
247860
257760
267759
277659
287658
297658
307658

How September really feels in Danville

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.

Danville 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°3.59.21.69.82.0
Feb52° / 34°3.18.51.710.62.9
Mar60° / 40°4.110.6111.74.9
Apr70° / 50°3.49.5012.96.6
May77° / 58°3.310.6013.96.6
Jun85° / 67°3.311.7014.55.0
Jul89° / 71°3.412.9014.24.0
Aug87° / 69°3.211.1013.44.7
Sep80° / 62°4.08.8012.26.6
Oct70° / 51°3.27011.17.1
Nov60° / 40°3.17.40.1105.2
Dec51° / 35°3.48.50.79.52.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25446
35446
45446
55446
65545
75446
85446
95446
105545
115545
125545
135446
145545
155446
165347
175248
185248
195248
205149
215149
225149
235248
245248
255248
265347
275347
285446
295545
305545

Chance of precipitation in September

Any precipitation

Danville gets around 4.0 in of rain over 8.8 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 (%)
131
231
331
430
530
629
728
828
927
1027
1126
1226
1326
1426
1527
1627
1728
1828
1929
2030
2130
2231
2331
2430
2530
2629
2729
2828
2928
3027

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 (%)
1813273815
2814273714
3914273514
41015283314
51116283213
61217283013
71318282912
81418282811
91519282710
101620282710
11172027269
12182127268
13192126268
14202126267
15212225266
16222225256
17232225255
18242224255
19252224254
20262224254
21272224244
22282124243
23302124233
24312123223
25332023212
26352023202
27372022192
28382022182
29402021162
30422020152

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
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
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:53 AM to 6:17 AM, and sunset from 6:42 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:536:42
212.85:546:40
312.75:546:39
412.75:556:37
512.75:566:36
612.65:576:34
712.65:586:33
812.55:586:31
912.55:596:30
1012.56:006:28
1112.46:016:27
1212.46:026:25
1312.36:036:23
1412.36:036:22
1512.36:046:20
1612.26:056:19
1712.26:066:17
1812.16:076:16
1912.16:076:14
2012.16:086:13
2112.06:096:11
2212.06:106:09
2312.06:116:08
2411.96:126:06
2511.96:126:05
2611.86:136:03
2711.86:146:02
2811.86:156:00
2911.76:165:59
3011.76:175:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.41 kWh/m².

For context, solar energy here swings from a low near 2.22 kWh/m² to a high of 6.17 kWh/m² in June across the year — September's 4.41 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.1Bright
264.0Bright
274.0Bright
284.0Bright
294.0Moderate
304.0Moderate
Planning a trip in September

Is September a good time to visit Danville?

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 Danville for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Danville in September

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

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

light clothesrain gear

UV index in Danville 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 Danville peaks around July 13 at about 9 (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 9Dec 20UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Moderate

Air quality in Danville 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 Danville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1516 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar10Good
Apr10Good
May13Moderate
Jun15Moderate
Jul17Moderate
Aug15Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Danville?

Danville sits at 36.6°N, 79.4°W, 531 ft above sea level, in United States. The nearest listed city is Eden, 22 mi away.

Topography around Danville

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

Within 2 miles, the terrain around Danville has only modest variations in elevation — a maximum elevation change of 272 ft around an average of 509 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 856 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,966 ft.

The land around Danville is covered by trees (57%) and artificial surfaces (27%) within 2 miles, trees (74%) and grassland (20%) within 10 miles, and trees (79%) within 50 miles.

2 miles
272 ft
10 miles
856 ft
50 miles
2,966 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Eden 22 mi · Burlington 34 mi · Greensboro 42 mi · Durham 49 mi · Kernersville 50 mi · Carrboro 50 mi · Chapel Hill 50 mi · High Point 55 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 Danville (36.586°, -79.395°, elevation 531 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).