Bethlehem weather in July

In July, Bethlehem sees average daytime highs of 84°F and overnight lows near 65°F, with 3.6 in of rain across 10.2 wet days and about 14.6 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 84°F through the month. The sky is clear or mostly clear about 26% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 54 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is Bethlehem's 4th-clearest and 11th-windiest month. For the whole year in context, see Bethlehem's year-round climate.

Daytime high
84°
1st warmest
Overnight low
65°
12th coldest
Rainfall
3.6 in
10.2 wet days
Daylight
14 h 36 min
4:48 AM – 7:26 PM
Cloud cover
59%
4th clearest
Wind
5 mph
11th windiest
Solar energy
5.93 kWh/m²
Travel score
5.4
out of 10

Bethlehem is city in Lehigh and Northampton counties, Pennsylvania, USA.

Density
1,487/km²
people per km²
Founded
1741

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 84°F through the month.

A typical July day in Bethlehem reaches about 84°F in the afternoon and slips back to 65°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 77°F and 92°F. Set against its neighbours, July runs about 5°F warmer than June and about 2°F warmer than August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18364
28364
38364
48364
58465
68465
78465
88465
98465
108465
118465
128465
138565
148566
158566
168566
178566
188566
198566
208566
218566
228566
238566
248566
258566
268466
278466
288466
298466
308466
318466

How July really feels in Bethlehem

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.

Bethlehem weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°3.69.65.29.40.0
Feb40° / 24°3.18.94.610.40.1
Mar48° / 31°4.110.93.811.71.8
Apr60° / 42°3.910.70.5134.7
May70° / 51°3.711.4014.26.2
Jun79° / 60°4.111014.86.3
Jul84° / 65°3.610.2014.65.4
Aug82° / 64°3.79.8013.66.1
Sep75° / 56°4.38.8012.37.0
Oct63° / 45°4.18.70.210.95.7
Nov51° / 35°3.38.30.89.72.7
Dec41° / 28°4.19.93.49.10.3

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 23% of July, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24951
34951
45050
55050
65050
75050
85149
95149
105149
115149
125248
135248
145248
155248
165050
175050
185050
194951
204951
214852
224852
234852
244852
254951
264951
274852
284852
294852
304951
314951

Chance of precipitation in July

Any precipitation

Bethlehem gets around 3.6 in of rain over 10.2 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 33% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
233
333
433
533
633
732
832
932
1032
1132
1231
1331
1431
1532
1632
1732
1833
1933
2033
2134
2234
2334
2435
2535
2635
2735
2835
2935
3035
3135

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11924242570
21924242670
31924232680
41924232680
51923232680
62023232680
71923232680
81922232690
91922232790
101921242790
111921242790
121820252890
131820252890
141819252890
151719262891
161719262891
1717182628101
1816182729101
1916182729101
2015182829101
2115172829101
2214172929101
2314172929101
2414182929100
2514183029100
2613183028100
2714193028100
2814193028100
291419302890
301520292790
311520292790

Wind in July

Winds average 5 mph in July.

Across July, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 54 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 42 minutes over July. Sunrise moves from 4:39 AM to 5:01 AM, and sunset from 7:31 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:397:31
214.94:397:31
314.94:407:31
414.84:407:31
514.84:417:31
614.84:417:30
714.84:427:30
814.84:427:30
914.84:437:29
1014.84:447:29
1114.74:447:29
1214.74:457:28
1314.74:467:28
1414.74:467:27
1514.74:477:27
1614.64:487:26
1714.64:497:26
1814.64:497:25
1914.64:507:24
2014.54:517:24
2114.54:527:23
2214.54:537:22
2314.54:547:22
2414.44:557:21
2514.44:557:20
2614.44:567:19
2714.34:577:18
2814.34:587:17
2914.34:597:16
3014.35:007:15
3114.25:017:14

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.93 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.99 kWh/m² in June across the year — July's 5.93 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.0Intense
136.0Intense
146.0Intense
156.0Bright
166.0Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.8Bright
225.8Bright
235.8Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in July

Is July a good time to visit Bethlehem?

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

5.4
Sightseeing
6th-best month of the year
6.9
Beach & pool
1st-best month of the year

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

What to pack for Bethlehem in July

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

In July, Bethlehem sees daytime highs around 84°F and nights near 65°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Bethlehem 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 Bethlehem peaks around July 10 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 10UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Bethlehem 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 Bethlehem 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 Bethlehem?

Bethlehem sits at 40.6°N, 75.4°W, 358 ft above sea level, in United States. The nearest listed city is Allentown, 6.2 mi away.

Topography around Bethlehem

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

Within 2 miles, the terrain around Bethlehem has only modest variations in elevation — a maximum elevation change of 778 ft around an average of 358 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,024 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,516 ft.

The land around Bethlehem is covered by trees (43%) and artificial surfaces (36%) within 2 miles, trees (49%) and grassland (21%) within 10 miles, and trees (73%) within 50 miles.

2 miles
778 ft
10 miles
1,024 ft
50 miles
2,516 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Allentown 6.2 mi · Whitehall Township 7.5 mi · Easton 8.7 mi · Lansdale 27 mi · Limerick 29 mi · Pottstown 30 mi · Norristown 35 mi · Phoenixville 35 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 Bethlehem (40.6259°, -75.3705°, elevation 358 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. 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).