Greater Upper Marlboro weather in October

In October, Greater Upper Marlboro sees average daytime highs of 67°F and overnight lows near 52°F, with 3.5 in of rain across 7.9 wet days and about 11 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 72°F in the first days to 63°F by the end. The sky is clear or mostly clear about 42% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 24 min by month's end. Set against the rest of the year, October is Greater Upper Marlboro's 1st-clearest and 7th-windiest month. For the whole year in context, see Greater Upper Marlboro's year-round climate.

Daytime high
67°
6th warmest
Overnight low
52°
7th coldest
Rainfall
3.5 in
7.9 wet days
Daylight
11 hours
6:23 AM – 5:21 PM
Cloud cover
51%
1st clearest
Wind
7 mph
7th windiest
Solar energy
3.36 kWh/m²
Travel score
6.6
out of 10

Greater Upper Marlboro is census designated place in Maryland until 2010.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 72°F in the first days to 63°F by the end.

A typical October day in Greater Upper Marlboro reaches about 67°F in the afternoon and slips back to 52°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 57°F and 78°F. Set against its neighbours, October runs about 11°F cooler than September and about 11°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17358
27358
37257
47257
57257
67156
77156
87155
97055
107055
116954
126954
136953
146853
156853
166752
176752
186751
196651
206651
216550
226550
236549
246449
256449
266448
276348
286348
296347
306247
316247

How October really feels in Greater Upper Marlboro

Once humidity and wind are folded in, October 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

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

Greater Upper Marlboro weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan44° / 30°3.18.62.69.60.7
Feb46° / 31°2.98.62.410.51.4
Mar55° / 38°4.010.31.511.73.4
Apr66° / 49°3.4100.1135.9
May74° / 58°3.710.7014.16.6
Jun83° / 67°3.711014.75.7
Jul87° / 72°4.312.3014.44.5
Aug85° / 71°4.010.6013.55.3
Sep78° / 64°4.39.1012.36.9
Oct67° / 52°3.57.90116.6
Nov56° / 42°2.97.60.19.94.2
Dec47° / 35°3.58.81.29.31.7

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25545
35545
45545
55545
65545
75545
85644
95644
105644
115644
125743
135644
145644
155743
165743
175743
185743
195743
205743
215743
225743
235743
245644
255545
265545
275545
285446
295446
305446
315545

Chance of precipitation in October

Any precipitation

Greater Upper Marlboro gets around 3.5 in of rain over 7.9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
227
327
427
526
626
726
825
925
1025
1125
1226
1326
1426
1526
1626
1726
1826
1926
2026
2126
2226
2326
2426
2526
2626
2726
2826
2926
3026
3126

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1471817153
2481816143
3501816133
4521815123
5531914113
6541914103
756191393
857191383
960191272
1061191262
1163181162
1264181152
1367171042
1467171042
1570161031
167116931
177315921
187414921
197614820
207713820
217912810
228012710
238111710
248211610
258211610
268311510
278311510
288311510
298411410
308411410
318510410

Wind in October

Winds average 7 mph in October.

Across October, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over October. Sunrise moves from 6:08 AM to 6:39 AM, and sunset from 5:44 PM to 5:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:085:44
211.66:095:42
311.56:105:41
411.56:115:39
511.46:125:38
611.46:135:36
711.36:145:34
811.36:155:33
911.36:165:31
1011.26:175:30
1111.26:185:28
1211.16:195:27
1311.16:205:25
1411.16:215:24
1511.06:225:22
1611.06:235:21
1710.96:245:20
1810.96:255:18
1910.86:265:17
2010.86:275:16
2110.86:285:14
2210.76:295:13
2310.76:305:12
2410.66:315:10
2510.66:335:09
2610.66:345:08
2710.56:355:07
2810.56:365:05
2910.56:375:04
3010.46:385:03
3110.46:395:02

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.36 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 — October's 3.36 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.7Moderate
43.7Moderate
53.7Moderate
63.6Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.3Moderate
183.3Moderate
193.3Moderate
203.2Moderate
213.2Moderate
223.2Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.0Moderate
273.0Moderate
283.0Moderate
292.9Moderate
302.9Moderate
312.9Moderate
Planning a trip in October

Hazard calendar for Greater Upper Marlboro

In seasonPeak

In October, Greater Upper Marlboro sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Greater Upper Marlboro 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 October a good time to visit Greater Upper Marlboro?

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

6.6
Sightseeing
2nd-best month of the year
3.3
Beach & pool
6th-best month of the year

October is a reasonable time to visit Greater Upper Marlboro for sightseeing.

What to pack for Greater Upper Marlboro in October

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

In October, Greater Upper Marlboro sees daytime highs around 67°F and nights near 52°F. Little to plan around — just the basics. About 8 days see rain.

Sea temperature near Greater Upper Marlboro in October

The nearest coast averages about 65°F in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 21 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 Greater Upper Marlboro in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Greater Upper Marlboro 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 Greater Upper Marlboro in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Greater Upper Marlboro is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Nov 118 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct9Good
Nov8Good
Dec10Good
Location & terrain

Where is Greater Upper Marlboro?

Greater Upper Marlboro sits at 38.8°N, 76.7°W, 79 ft above sea level, in United States. The nearest listed city is Bowie, 7.5 mi away.

Topography around Greater Upper Marlboro

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

Within 2 miles, the terrain around Greater Upper Marlboro has only modest variations in elevation — a maximum elevation change of 276 ft around an average of 115 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 341 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,434 ft.

The land around Greater Upper Marlboro is covered by trees (75%) within 2 miles, trees (68%) within 10 miles, and trees (55%) and water (21%) within 50 miles.

2 miles
276 ft
10 miles
341 ft
50 miles
1,434 ft
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Bowie 7.5 mi · Camp Springs 8.7 mi · Clinton 9.3 mi · Suitland 9.3 mi · Suitland-Silver Hill 9.3 mi · Landover 11 mi · Lanham-Seabrook 11 mi · Seabrook 11 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 Greater Upper Marlboro (38.8314°, -76.7483°, elevation 79 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).