Sewell weather in July

In July, Sewell sees average daytime highs of 86°F and overnight lows near 70°F, with 3.6 in of rain across 10.7 wet days and about 14.5 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 86°F through the month. The sky is clear or mostly clear about 31% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 48 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is Sewell's 5th-clearest and 11th-windiest month. For the whole year in context, see Sewell's year-round climate.

Daytime high
86°
1st warmest
Overnight low
70°
12th coldest
Rainfall
3.6 in
10.7 wet days
Daylight
14 h 36 min
4:49 AM – 7:23 PM
Cloud cover
57%
5th clearest
Wind
6 mph
11th windiest
Solar energy
6.01 kWh/m²
Travel score
5.0
out of 10

Sewell is unincorporated community in New Jersey, United States of America.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 86°F through the month.

A typical July day in Sewell reaches about 86°F in the afternoon and slips back to 70°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 93°F. Set against its neighbours, July runs about 4°F warmer than June and about 2°F warmer than August.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18569
28569
38569
48569
58569
68669
78669
88669
98670
108670
118670
128670
138670
148670
158670
168670
178670
188670
198670
208671
218671
228671
238671
248671
258670
268670
278670
288670
298670
308570
318570

How July really feels in Sewell

Once humidity and wind are folded in, July 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

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

Sewell weather by month

How July compares with the rest of the year at a glance. July is the 1st-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°3.19.23.49.50.1
Feb44° / 29°2.98.73.110.40.8
Mar53° / 36°4.010.7211.72.8
Apr64° / 46°3.410.20.3135.5
May73° / 55°3.310.3014.26.6
Jun82° / 65°3.710.2014.86.0
Jul86° / 70°3.610.7014.55.0
Aug84° / 68°3.810.3013.65.6
Sep78° / 61°3.99.1012.36.9
Oct66° / 50°3.67.8010.96.4
Nov55° / 39°2.980.29.83.8
Dec46° / 32°3.88.91.89.21.3

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25248
35248
45248
55248
65347
75347
85347
95347
105446
115446
125446
135347
145347
155347
165347
175248
185248
195248
205149
215050
224951
234951
244951
255050
264951
274951
284951
294951
305050
315050

Chance of precipitation in July

Any precipitation

Sewell gets around 3.6 in of rain over 10.7 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
333
433
533
633
733
833
933
1032
1132
1232
1332
1432
1532
1632
1732
1833
1933
2034
2134
2235
2335
2436
2536
2637
2737
2837
2937
3037
3137

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19172331190
28172331200
38172330210
48172330210
58172330220
68172230221
78172230231
88172230231
98162230241
107162230241
117162130251
127152130251
136152131261
146152131261
156152031271
166142031272
175142031282
185142031292
195132031292
205132032292
215122032302
224122032302
234112032302
244112032302
254112132301
264112132301
274112132301
284112133301
295112233291
305112233291
315122233280

Wind in July

Winds average 6 mph in July.

Across July, 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.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 48 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:40 AM to 5:02 AM, and sunset from 7:27 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:407:27
214.84:417:27
314.84:417:27
414.84:427:27
514.74:427:27
614.74:437:27
714.74:437:27
814.74:447:26
914.74:457:26
1014.74:457:26
1114.74:467:25
1214.64:477:25
1314.64:477:24
1414.64:487:24
1514.64:497:23
1614.64:497:23
1714.54:507:22
1814.54:517:22
1914.54:527:21
2014.54:537:20
2114.44:537:20
2214.44:547:19
2314.44:557:18
2414.44:567:18
2514.34:577:17
2614.34:587:16
2714.34:587:15
2814.24:597:14
2914.25:007:13
3014.25:017:12
3114.25:027:11

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.01 kWh/m².

For context, solar energy here swings from a low near 1.86 kWh/m² to a high of 6.1 kWh/m² in June across the year — July's 6.01 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.0Intense
186.0Intense
196.0Bright
205.9Bright
215.9Bright
225.9Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.6Bright
Planning a trip in July

Hazard calendar for Sewell

In seasonPeak

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

Sewell 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 July a good time to visit Sewell?

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

5.0
Sightseeing
7th-best month of the year
6.8
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Sewell for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sewell in July

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

In July, Sewell sees daytime highs around 86°F and nights near 70°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Sewell in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sewell peaks around July 11 at about 8 (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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 11UV 8Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Sewell in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sewell is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.0× 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
Feb13Moderate
Mar15Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul18Moderate
Aug15Moderate
Sep12Good
Oct9Good
Nov9Good
Dec10Good
Location & terrain

Where is Sewell?

Sewell sits at 39.8°N, 75.1°W, 66 ft above sea level, in United States. The nearest listed city is Glassboro, 5.0 mi away.

Topography around Sewell

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

Within 2 miles, the terrain around Sewell has only modest variations in elevation — a maximum elevation change of 184 ft around an average of 89 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 259 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,365 ft.

The land around Sewell is covered by trees (67%) and grassland (20%) within 2 miles, trees (52%) within 10 miles, and trees (57%) within 50 miles.

2 miles
184 ft
10 miles
259 ft
50 miles
1,365 ft
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Glassboro 5.0 mi · Lindenwold 8.7 mi · Williamstown 9.9 mi · Sicklerville 9.9 mi · Whitman 11 mi · Lower Moyamensing 11 mi · Wharton 11 mi · Camden 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 Sewell (39.7665°, -75.1443°, elevation 66 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). 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).