Cumberland weather in September

In September, Cumberland sees average daytime highs of 74°F and overnight lows near 55°F, with 4.1 in of rain across 9.7 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 78°F in the first days to 69°F by the end. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Cumberland's 2nd-clearest and 10th-windiest month. For the whole year in context, see Cumberland's year-round climate.

Daytime high
74°
4th warmest
Overnight low
55°
9th coldest
Rainfall
4.1 in
9.7 wet days
Daylight
12 h 18 min
6:02 AM – 6:17 PM
Cloud cover
54%
2nd clearest
Wind
5 mph
10th windiest
Solar energy
4.22 kWh/m²
Travel score
6.9
out of 10

Cumberland is city in Allegany County, Maryland, United States.

Density
769/km²
people per km²
Founded
1787

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 78°F in the first days to 69°F by the end.

A typical September day in Cumberland reaches about 74°F in the afternoon and slips back to 55°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 84°F. Set against its neighbours, September runs about 6°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17960
27960
37859
47859
57859
67758
77758
87758
97658
107657
117657
127556
137556
147556
157455
167455
177355
187354
197354
207253
217253
227153
237152
247152
257052
267051
276951
286951
296950
306850

How September really feels in Cumberland

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.

Cumberland weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 22°3.19.55.39.50.0
Feb40° / 24°2.88.84.910.40.1
Mar48° / 31°3.811.13.711.71.8
Apr61° / 42°3.811.80.6134.7
May69° / 51°4.113.3014.25.9
Jun78° / 59°3.911.5014.76.4
Jul82° / 64°3.310.9014.56.3
Aug80° / 62°2.69.7013.66.6
Sep74° / 55°4.19.7012.36.9
Oct62° / 44°3.38.40.310.95.5
Nov50° / 34°3.18.41.19.82.4
Dec40° / 27°3.28.949.20.1

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 16% of September, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25446
35545
45545
55545
65545
75545
85644
95644
105644
115545
125545
135545
145545
155545
165446
175446
185347
195347
205347
215347
225248
235347
245446
255446
265446
275446
285446
295446
305446

Chance of precipitation in September

Any precipitation

Cumberland gets around 4.1 in of rain over 9.7 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 31% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
129
229
330
430
530
630
730
830
930
1030
1130
1230
1330
1430
1530
1630
1731
1831
1931
2032
2132
2232
2333
2433
2533
2632
2732
2832
2932
3031

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1302623192
2322622192
3332522182
4352521181
5362521171
6382520161
7392520151
8412419141
9422419131
10442419121
11452419121
12462419111
13472419100
1449231890
1551231880
1651231880
1752231870
1855221760
1955221760
2057211750
2158211650
2260201640
2361201630
2463191530
2563191530
2666181420
2766181420
2868171320
2968171320
3069171220

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
235calm
245calm
255calm
265calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 5:47 AM to 6:15 AM, and sunset from 6:42 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:476:42
212.95:486:41
312.85:496:39
412.85:506:37
512.75:516:36
612.75:526:34
712.75:536:32
812.65:546:31
912.65:556:29
1012.55:566:27
1112.55:576:26
1212.45:586:24
1312.45:596:22
1412.36:006:20
1512.36:016:19
1612.36:026:17
1712.26:036:15
1812.26:046:14
1912.16:056:12
2012.16:066:10
2112.06:076:09
2212.06:076:07
2311.96:086:05
2411.96:096:03
2511.96:106:02
2611.86:116:00
2711.86:125:58
2811.76:135:57
2911.76:145:55
3011.66:155:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.22 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 6.04 kWh/m² in June across the year — September's 4.22 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.4Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
224.0Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Cumberland?

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

6.9
Sightseeing
1st-best month of the year
5.4
Beach & pool
4th-best month of the year

September is a reasonable time to visit Cumberland for sightseeing.

What to pack for Cumberland in September

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

In September, Cumberland sees daytime highs around 74°F and nights near 55°F. Worth packing: light clothes and rain gear. About 10 days see rain.

light clothesrain gear

UV index in Cumberland in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cumberland peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 20UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Cumberland 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 Cumberland is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1316 µg/m³Nov 157 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar11Good
Apr11Good
May14Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Cumberland?

Cumberland sits at 39.7°N, 78.8°W, 627 ft above sea level, in United States. The nearest listed city is Martinsburg, 45 mi away.

Topography around Cumberland

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

Within 2 miles, the terrain around Cumberland has significant variations in elevation — a maximum elevation change of 1,106 ft around an average of 853 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,398 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,924 ft.

The land around Cumberland is covered by trees (63%) and artificial surfaces (24%) within 2 miles, trees (82%) within 10 miles, and trees (79%) within 50 miles.

2 miles
1,106 ft
10 miles
2,398 ft
50 miles
3,924 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Martinsburg 45 mi · Winchester 45 mi · Johnstown 47 mi · Hagerstown 55 mi · Front Royal 59 mi · Chambersburg 62 mi · Altoona 63 mi · Morgantown 63 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 Cumberland (39.6529°, -78.7625°, elevation 627 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).