Hillcrest Heights weather in September

In September, Hillcrest Heights sees average daytime highs of 79°F and overnight lows near 62°F, with 4.2 in of rain across 9.2 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 83°F in the first days to 74°F by the end. The sky is clear or mostly clear about 35% 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 Hillcrest Heights's 3rd-clearest and 9th-windiest month. For the whole year in context, see Hillcrest Heights's year-round climate.

Daytime high
79°
4th warmest
Overnight low
62°
9th coldest
Rainfall
4.2 in
9.2 wet days
Daylight
12 h 12 min
5:55 AM – 6:10 PM
Cloud cover
56%
3rd clearest
Wind
6 mph
9th windiest
Solar energy
4.3 kWh/m²
Travel score
6.8
out of 10

Hillcrest Heights is census designated place in Maryland, United States.

Density
2,553/km²
people per km²

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 83°F in the first days to 74°F by the end.

A typical September day in Hillcrest Heights reaches about 79°F in the afternoon and slips back to 62°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 88°F. Set against its neighbours, September runs about 7°F cooler than August and about 11°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18367
28367
38367
48367
58266
68266
78265
88265
98165
108165
118064
128064
138063
148063
157963
167962
177862
187862
197861
207761
217760
227760
237660
247659
257659
267559
277558
287458
297458
307457

How September really feels in Hillcrest Heights

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.

Hillcrest Heights 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
Jan44° / 29°3.08.62.79.60.7
Feb47° / 31°2.88.22.410.51.5
Mar55° / 38°3.910.31.611.73.6
Apr66° / 48°3.39.90.1136.0
May75° / 57°3.611.1014.16.6
Jun84° / 67°3.510.8014.75.5
Jul88° / 71°3.811.9014.44.3
Aug86° / 70°3.59.7013.55.1
Sep79° / 62°4.29.2012.36.8
Oct68° / 51°3.47.80116.7
Nov57° / 40°2.97.30.29.94.3
Dec48° / 34°3.48.81.39.31.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25347
35347
45347
55347
65347
75347
85347
95347
105347
115347
125347
135248
145248
155248
165149
175149
185149
195050
205050
214951
225050
235050
245149
255248
265347
275347
285347
295446
305545

Chance of precipitation in September

Any precipitation

Hillcrest Heights gets around 4.2 in of rain over 9.2 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 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
330
431
531
631
731
831
930
1030
1129
1229
1328
1428
1527
1627
1727
1827
1927
2028
2128
2228
2328
2428
2528
2628
2728
2828
2927
3027

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
110172527201
211172527191
312182526191
413182525181
514192524171
615192523161
716202523151
817202522141
918202622141
1020202621131
1121202621121
1222202621111
1324202620100
142520262090
152620262080
162820252070
172919252060
183119252050
193219251950
203419241940
213519231930
223718231930
233918221830
244018211820
254218201820
264318201720
274518191720
284618181620
294818181520
304917171520

Wind in September

Winds average 6 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
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
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 5:41 AM to 6:08 AM, and sunset from 6:34 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:416:34
212.85:426:33
312.85:436:31
412.85:446:29
512.75:456:28
612.75:466:26
712.65:466:25
812.65:476:23
912.55:486:21
1012.55:496:20
1112.55:506:18
1212.45:516:16
1312.45:526:15
1412.35:536:13
1512.35:546:11
1612.25:556:10
1712.25:566:08
1812.25:576:06
1912.15:576:05
2012.15:586:03
2112.05:596:01
2212.06:006:00
2311.96:015:58
2411.96:025:56
2511.96:035:55
2611.86:045:53
2711.86:055:51
2811.76:065:50
2911.76:075:48
3011.66:085:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.3 kWh/m².

For context, solar energy here swings from a low near 1.98 kWh/m² to a high of 6.16 kWh/m² in June across the year — September's 4.3 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.7Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.2Bright
214.1Bright
224.1Bright
234.0Bright
244.0Bright
254.0Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Hillcrest Heights

In seasonPeak

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

Hillcrest Heights 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 September a good time to visit Hillcrest Heights?

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

6.8
Sightseeing
1st-best month of the year
6.5
Beach & pool
3rd-best month of the year

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

What to pack for Hillcrest Heights in September

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

In September, Hillcrest Heights sees daytime highs around 79°F and nights near 62°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

Sea temperature near Hillcrest Heights in September

The nearest coast averages about 74°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 32 mi away) is warmest in August at about 78°F and coldest in February near 37°F.

It's comfortable for a long swim from Jun 16 to Oct 6 — about 3.7 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb37Bracing
Mar40Bracing
Apr47Bracing
May58Bracing
Jun68Refreshing
Jul76Warm
Aug78Warm
Sep74Refreshing
Oct65Cool
Nov54Bracing
Dec45Bracing

UV index in Hillcrest Heights 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 Hillcrest Heights peaks around July 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 highHighModerateLowJul 11UV 9Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Hillcrest Heights 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 Hillcrest Heights is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 129 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Moderate
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Moderate
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Hillcrest Heights?

Hillcrest Heights sits at 38.8°N, 77.0°W, 276 ft above sea level, in United States. The nearest listed city is Suitland-Silver Hill, 1.9 mi away.

Topography around Hillcrest Heights

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

Within 2 miles, the terrain around Hillcrest Heights has only modest variations in elevation — a maximum elevation change of 295 ft around an average of 236 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 446 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,539 ft.

The land around Hillcrest Heights is covered by trees (56%) and artificial surfaces (34%) within 2 miles, trees (57%) and artificial surfaces (27%) within 10 miles, and trees (58%) within 50 miles.

2 miles
295 ft
10 miles
446 ft
50 miles
1,539 ft
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Suitland-Silver Hill 1.9 mi · Suitland 2.5 mi · Glassmanor 2.5 mi · Oxon Hill 2.5 mi · Oxon Hill-Glassmanor 2.5 mi · Camp Springs 3.7 mi · Capitol Riverfront 3.7 mi · Capitol Hill 4.3 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 Hillcrest Heights (38.8329°, -76.9594°, elevation 276 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).