Marlboro weather in December

In December, Marlboro sees average daytime highs of 45°F and overnight lows near 33°F, with 4.0 in of precipitation across 9.5 wet days and about 9.2 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 49°F in the first days to 43°F by the end. The sky is clear or mostly clear about 33% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 18 min at the start of December to 9 h 12 min by month's end. Set against the rest of the year, December is Marlboro's 6th-clearest and 4th-windiest month. For the whole year in context, see Marlboro's year-round climate.

Daytime high
45°
10th warmest
Overnight low
33°
3rd coldest
Precipitation
4.0 in
9.5 wet days
Daylight
9 h 06 min
7:19 AM – 4:27 PM
Cloud cover
59%
6th clearest
Wind
9 mph
4th windiest
Solar energy
1.81 kWh/m²
Travel score
1.1
out of 10

Marlboro is human settlement in Marlboro Township, New Jersey, United States of America.

Founded
1848

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 49°F in the first days to 43°F by the end.

A typical December day in Marlboro reaches about 45°F in the afternoon and slips back to 33°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 33°F and 58°F. Set against its neighbours, December runs about 9°F cooler than November and about 5°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
15037
24936
34936
44836
54835
64835
74735
84735
94734
104634
114634
124633
134633
144533
154533
164533
174533
184532
194432
204432
214432
224432
234432
244431
254431
264331
274331
284331
294331
304330
314330

How December really feels in Marlboro

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 31 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
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Marlboro weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan41° / 28°3.39.33.89.50.1
Feb43° / 29°3.18.93.610.40.5
Mar51° / 35°4.210.32.711.72.4
Apr62° / 45°3.510.70.3135.0
May71° / 55°3.411.1014.26.3
Jun80° / 64°3.911.2014.86.2
Jul85° / 70°4.011.8014.65.1
Aug83° / 69°4.310.5013.65.9
Sep76° / 62°3.79.2012.37.0
Oct65° / 51°3.78.4010.96.2
Nov55° / 40°3.07.90.29.83.6
Dec45° / 33°4.09.51.99.21.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24852
34852
44951
54753
64753
74654
84753
94654
104654
114555
124456
134555
144555
154555
164654
174753
184753
194753
204753
214951
224951
234951
245050
255050
265050
275050
284951
294951
304951
314951

Chance of precipitation in December

Any precipitationSnow

Marlboro gets around 4.0 in of rain and snow over 9.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 30% and peaks near 33% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1304
2304
3314
4315
5325
6325
7336
8336
9336
10336
11337
12337
13327
14327
15327
16316
17316
18306
19306
20296
21296
22286
23286
24286
25286
26286
27286
28296
29297
30297
31298

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1982
2982
3982
4982
5982
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
31991

Wind in December

Winds average 9 mph in December.

Across December, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 18 min at the start of December to 9 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:07 AM to 7:25 AM, and sunset from 4:27 PM to 4:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.37:074:27
29.37:084:27
39.37:094:26
49.37:094:26
59.37:104:26
69.27:114:26
79.27:124:26
89.27:134:26
99.27:144:26
109.27:154:26
119.27:154:26
129.27:164:26
139.27:174:27
149.27:184:27
159.17:184:27
169.17:194:27
179.17:204:28
189.17:204:28
199.17:214:28
209.17:214:29
219.17:224:29
229.17:224:30
239.17:234:30
249.17:234:31
259.17:244:31
269.17:244:32
279.17:244:32
289.17:254:33
299.17:254:34
309.27:254:34
319.27:254:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.81 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.81 kWh/m² to a high of 6.07 kWh/m² in June across the year — December's 1.81 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.9Dim
41.9Dim
51.9Dim
61.9Dim
71.8Dim
81.8Dim
91.8Dim
101.8Dim
111.8Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.8Dim
171.8Dim
181.8Dim
191.8Dim
201.8Dim
211.8Dim
221.8Dim
231.8Dim
241.8Dim
251.8Dim
261.8Dim
271.8Dim
281.8Dim
291.9Dim
301.9Dim
311.9Dim
Planning a trip in December

Hazard calendar for Marlboro

In seasonPeak

None of Marlboro's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 December a good time to visit Marlboro?

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

1.1
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Marlboro.

What to pack for Marlboro in December

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

In December, Marlboro sees daytime highs around 45°F and nights near 33°F. Pack a warm layer. Worth having: a heavy coat and rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Marlboro in December

The nearest coast averages about 49°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 20 mi away) is warmest in August at about 74°F and coldest in February near 40°F.

It's comfortable for a long swim from Jun 30 to Sep 27 — about 3 months when the water holds above 68°F.

40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan43Bracing
Feb40Bracing
Mar41Bracing
Apr46Bracing
May55Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct64Cool
Nov55Bracing
Dec49Bracing

UV index in Marlboro in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Marlboro peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 11UV 8Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov3Moderate
Dec1Low

Air quality in Marlboro in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Marlboro is worst in July — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1318 µg/m³Nov 1410 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar16Moderate
Apr16Moderate
May17Moderate
Jun17Moderate
Jul18Moderate
Aug16Moderate
Sep14Moderate
Oct11Good
Nov10Good
Dec12Good
Location & terrain

Where is Marlboro?

Marlboro sits at 40.3°N, 74.2°W, 171 ft above sea level, in United States. The nearest listed city is Tinton Falls, 7.5 mi away.

Topography around Marlboro

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

Within 2 miles, the terrain around Marlboro has only modest variations in elevation — a maximum elevation change of 233 ft around an average of 167 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 436 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,430 ft.

The land around Marlboro is covered by trees (66%) and grassland (24%) within 2 miles, trees (69%) within 10 miles, and trees (50%) and water (27%) within 50 miles.

2 miles
233 ft
10 miles
436 ft
50 miles
1,430 ft
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Tinton Falls 7.5 mi · South Old Bridge 8.7 mi · Middletown 8.7 mi · Old Bridge 9.3 mi · Sayreville Junction 11 mi · Sayreville 12 mi · South River 12 mi · East Brunswick 12 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 Marlboro (40.3154°, -74.2463°, elevation 171 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).