Mercerville-Hamilton Square weather in July

In July, Mercerville-Hamilton Square sees average daytime highs of 86°F and overnight lows near 69°F, with 4.2 in of rain across 11.3 wet days and about 14.6 hours of daylight. It is the 1st-warmest and 2nd-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 27% 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 Mercerville-Hamilton Square's 5th-clearest and 11th-windiest month. For the whole year in context, see Mercerville-Hamilton Square's year-round climate.

Daytime high
86°
1st warmest
Overnight low
69°
12th coldest
Rainfall
4.2 in
11.3 wet days
Daylight
14 h 36 min
4:46 AM – 7:22 PM
Cloud cover
59%
5th clearest
Wind
6 mph
11th windiest
Solar energy
5.9 kWh/m²
Travel score
4.9
out of 10

Mercerville-Hamilton Square is former census designated place in Mercer County, New Jersey, United States.

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 Mercerville-Hamilton Square reaches about 86°F in the afternoon and slips back to 69°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 78°F and 93°F. Set against its neighbours, July runs about 5°F warmer than June and about 2°F warmer than August.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18567
28567
38568
48568
58568
68668
78668
88668
98669
108669
118669
128669
138669
148669
158669
168669
178669
188669
198669
208669
218669
228669
238669
248669
258669
268669
278669
288669
298669
308569
318569

How July really feels in Mercerville-Hamilton Square

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.

Mercerville-Hamilton Square weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 27°3.39.33.89.50.0
Feb43° / 28°3.08.83.410.40.5
Mar51° / 35°4.210.32.611.72.5
Apr63° / 45°3.610.60.3135.2
May72° / 54°3.511.4014.26.4
Jun81° / 63°4.010.8014.86.0
Jul86° / 69°4.211.3014.64.9
Aug84° / 67°4.010.4013.65.6
Sep77° / 60°4.09.2012.36.9
Oct65° / 49°3.68.40.110.96.2
Nov54° / 39°2.97.80.39.83.5
Dec45° / 31°4.09.41.99.21.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 22% of July, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
34951
45050
55050
65050
75149
85149
95050
105149
115149
125149
135149
145050
155050
165050
175050
184951
194951
204951
214852
224852
234852
244753
254753
264852
274852
284852
294852
304852
314852

Chance of precipitation in July

Any precipitation

Mercerville-Hamilton Square gets around 4.2 in of rain over 11.3 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 36% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
734
834
934
1034
1134
1234
1334
1434
1534
1634
1735
1835
1936
2037
2138
2238
2339
2439
2539
2640
2740
2840
2940
3040
3139

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 30% of days. Sticky, muggy-or-worse air turns up on roughly 48% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
113192529130
213192529130
313192529130
413192429140
513192429140
613192429141
713192429151
813182429151
913182429161
1013182429161
1112182429161
1212172429171
1312172429171
1411172429181
1511172429191
1610162529191
1710162529201
1810162529201
199152529201
209152530211
218152530211
228152531211
238142531211
248142532211
257142532211
267152532211
277152531211
288152531200
298152531200
308152531200
319152531200

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
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
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 4:37 AM to 4:59 AM, and sunset from 7:27 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:377:27
214.84:377:27
314.84:387:27
414.84:387:27
514.84:397:27
614.84:407:26
714.84:407:26
814.84:417:26
914.74:417:25
1014.74:427:25
1114.74:437:25
1214.74:437:24
1314.74:447:24
1414.64:457:23
1514.64:457:23
1614.64:467:22
1714.64:477:22
1814.64:487:21
1914.54:497:21
2014.54:497:20
2114.54:507:19
2214.54:517:18
2314.44:527:18
2414.44:537:17
2514.44:547:16
2614.34:557:15
2714.34:557:14
2814.34:567:13
2914.34:577:12
3014.24:587:11
3114.24:597:10

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.9 kWh/m².

For context, solar energy here swings from a low near 1.8 kWh/m² to a high of 6.01 kWh/m² in June across the year — July's 5.9 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.0Intense
146.0Intense
156.0Bright
166.0Bright
175.9Bright
185.9Bright
195.9Bright
205.8Bright
215.8Bright
225.8Bright
235.7Bright
245.7Bright
255.7Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.5Bright
Planning a trip in July

Hazard calendar for Mercerville-Hamilton Square

In seasonPeak

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

Mercerville-Hamilton Square 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 Mercerville-Hamilton Square?

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

4.9
Sightseeing
7th-best month of the year
6.7
Beach & pool
2nd-best month of the year

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

What to pack for Mercerville-Hamilton Square in July

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

In July, Mercerville-Hamilton Square sees daytime highs around 86°F and nights near 69°F. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Mercerville-Hamilton Square in July

The nearest coast averages about 73°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 43 mi away) is warmest in August at about 74°F and coldest in February near 41°F.

It's comfortable for a long swim from Jun 29 to Sep 28 — about 3 months when the water holds above 68°F.

40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan44Bracing
Feb41Bracing
Mar41Bracing
Apr46Bracing
May55Bracing
Jun65Cool
Jul73Refreshing
Aug74Refreshing
Sep71Refreshing
Oct64Cool
Nov56Bracing
Dec49Bracing

UV index in Mercerville-Hamilton Square 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 Mercerville-Hamilton Square peaks around July 11 at about 8 (very high) — sunscreen, a hat and midday shade are essential. 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
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Mercerville-Hamilton Square 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 Mercerville-Hamilton Square 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 1518 µg/m³Nov 149 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar14Moderate
Apr14Moderate
May16Moderate
Jun17Moderate
Jul18Moderate
Aug15Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Mercerville-Hamilton Square?

Mercerville-Hamilton Square sits at 40.2°N, 74.7°W, 98 ft above sea level, in United States. The nearest listed city is Trenton, 3.7 mi away.

Topography around Mercerville-Hamilton Square

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mercerville-Hamilton Square.

Within 2 miles, the terrain around Mercerville-Hamilton Square has only modest variations in elevation — a maximum elevation change of 125 ft around an average of 92 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 505 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,473 ft.

The land around Mercerville-Hamilton Square is covered by trees (60%) and artificial surfaces (21%) within 2 miles, trees (55%) within 10 miles, and trees (60%) within 50 miles.

2 miles
125 ft
10 miles
505 ft
50 miles
1,473 ft
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Trenton 3.7 mi · Ewing 7.5 mi · Princeton 8.1 mi · Levittown 9.9 mi · Bensalem 17 mi · Hillsborough 17 mi · Willingboro 17 mi · Parkwood Manor 18 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 Mercerville-Hamilton Square (40.2313°, -74.6722°, elevation 98 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).