Marlboro weather in September

In September, Marlboro sees average daytime highs of 76°F and overnight lows near 62°F, with 3.7 in of rain across 9.2 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 72°F by the end. The sky is clear or mostly clear about 36% 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 Marlboro's 2nd-clearest and 9th-windiest month. For the whole year in context, see Marlboro's year-round climate.

Daytime high
76°
4th warmest
Overnight low
62°
9th coldest
Rainfall
3.7 in
9.2 wet days
Daylight
12 h 18 min
5:43 AM – 5:59 PM
Cloud cover
56%
2nd clearest
Wind
7 mph
9th windiest
Solar energy
4.23 kWh/m²
Travel score
7.0
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 September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 80°F in the first days to 72°F by the end.

A typical September day in Marlboro reaches about 76°F in the afternoon and slips back to 62°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 85°F. Set against its neighbours, September runs about 6°F cooler than August and about 11°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18066
28066
38066
48065
58065
67965
77965
87964
97864
107864
117863
127763
137763
147762
157662
167662
177661
187561
197560
207560
217460
227459
237459
247359
257358
267358
277258
287257
297257
307157

How September really feels in Marlboro

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.

Marlboro weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-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 September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35446
45347
55347
65347
75347
85347
95347
105347
115347
125446
135347
145347
155248
165149
175050
185149
195050
205050
214951
224852
234852
244951
254951
264951
275050
284951
295149
305149

Chance of precipitation in September

Any precipitation

Marlboro gets around 3.7 in of rain over 9.2 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 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
127
228
328
428
529
629
729
829
929
1029
1129
1229
1329
1429
1529
1629
1729
1829
1929
2030
2130
2230
2330
2430
2530
2630
2730
2830
2930
3030

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11523232415
21623222415
31723222315
41823222214
51924222214
62024222113
72124222113
82224212012
92424212011
102524211910
112724211910
12282321189
13302321188
14312321187
15332221176
16342221176
17352221175
18372221174
19382221164
20392120163
21402120163
22422119153
23432119152
24442118142
25462117142
26472117141
27492116131
28502016131
29522015121
30522015121

Wind in September

Winds average 7 mph in September.

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

0246810151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
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

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 5:29 AM to 5:58 AM, and sunset from 6:25 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:296:25
212.95:306:23
312.85:316:21
412.85:326:20
512.85:336:18
612.75:346:16
712.75:356:15
812.65:366:13
912.65:376:11
1012.55:386:10
1112.55:386:08
1212.45:396:06
1312.45:406:04
1412.45:416:03
1512.35:426:01
1612.35:435:59
1712.25:445:57
1812.25:455:56
1912.15:465:54
2012.15:475:52
2112.05:485:50
2212.05:495:49
2311.95:505:47
2411.95:515:45
2511.95:525:44
2611.85:535:42
2711.85:545:40
2811.75:565:38
2911.75:575:37
3011.65:585:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.23 kWh/m².

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 — September's 4.23 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
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

Hazard calendar for Marlboro

In seasonPeak

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

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 September a good time to visit Marlboro?

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

7.0
Sightseeing
1st-best month of the year
6.0
Beach & pool
4th-best month of the year

September is one of the better times to visit Marlboro for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Marlboro in September

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

In September, Marlboro sees daytime highs around 76°F and nights near 62°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

Sea temperature near Marlboro in September

The nearest coast averages about 71°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 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 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 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 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 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
September 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).