Allentown weather in June

In June, Allentown sees average daytime highs of 81°F and overnight lows near 62°F, with 4.1 in of rain across 11.4 wet days and about 14.8 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 77°F in the first days to 84°F by the end. The sky is clear or mostly clear about 24% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 42 min at the start of June to 14 h 54 min by month's end. Set against the rest of the year, June is Allentown's 8th-clearest and 9th-windiest month. For the whole year in context, see Allentown's year-round climate.

Daytime high
81°
3rd warmest
Overnight low
62°
10th coldest
Rainfall
4.1 in
11.4 wet days
Daylight
14 h 54 min
4:36 AM – 7:29 PM
Cloud cover
63%
8th clearest
Wind
6 mph
9th windiest
Solar energy
6.02 kWh/m²
Travel score
6.0
out of 10

Allentown is city in and seat of Lehigh County, Pennsylvania, United States.

Density
2,575/km²
people per km²
Founded
1762

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 77°F in the first days to 84°F by the end.

A typical June day in Allentown reaches about 81°F in the afternoon and slips back to 62°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 90°F. Set against its neighbours, June runs about 9°F warmer than May and about 5°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17757
27758
37758
47858
57859
67859
77859
87960
97960
107960
117960
128061
138061
148061
158162
168162
178162
188262
198263
208263
218263
228264
238364
248364
258364
268364
278465
288465
298465
308465

How June really feels in Allentown

Once humidity and wind are folded in, June 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

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

Allentown weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan38° / 24°3.49.54.89.40.0
Feb41° / 25°3.08.9410.40.2
Mar49° / 32°4.0113.511.72.1
Apr62° / 43°3.910.60.4135.0
May71° / 52°3.711.5014.26.3
Jun81° / 62°4.111.4014.86.0
Jul85° / 67°3.811.2014.65.0
Aug83° / 65°3.710.1013.65.8
Sep76° / 58°4.48.8012.37.0
Oct64° / 46°3.98.90.110.95.8
Nov52° / 36°3.28.10.69.73.0
Dec42° / 29°4.09.42.99.10.4

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 19% of June, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24357
34357
44357
54357
64357
74159
84159
94060
104159
114060
124060
134060
144060
154060
164060
174060
184159
194159
204159
214258
224357
234456
244456
254456
264555
274753
284753
294753
304852

Chance of precipitation in June

Any precipitation

Allentown gets around 4.1 in of rain over 11.4 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
337
437
537
637
737
837
937
1037
1137
1238
1338
1438
1538
1638
1739
1838
1938
2038
2138
2238
2338
2438
2538
2638
2738
2838
2938
3038

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 23% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1492118101
2482119111
3472219111
4462219121
5452219131
6442219131
7432220141
8422220142
9412320152
10392320152
11382321163
12362321173
13342322183
14332322193
15312323193
16302323204
17292324214
18282324214
19272324224
20262324224
21252325234
22242325235
23232325245
24222325245
25212325246
26212325256
27202325256
28202325267
29192324267
30192324278

Wind in June

Winds average 6 mph in June.

Across June, 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.

0246810151015202530
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
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 42 min at the start of June to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:39 AM to 4:39 AM, and sunset from 7:20 PM to 7:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:397:20
214.74:397:21
314.74:387:21
414.74:387:22
514.84:377:23
614.84:377:23
714.84:377:24
814.84:377:25
914.84:367:25
1014.84:367:26
1114.84:367:26
1214.94:367:27
1314.94:367:28
1414.94:367:28
1514.94:367:28
1614.94:367:29
1714.94:367:29
1814.94:367:30
1914.94:367:30
2014.94:367:30
2114.94:367:31
2214.94:367:31
2314.94:367:31
2414.94:377:31
2514.94:377:31
2614.94:377:31
2714.94:387:31
2814.94:387:32
2914.94:387:32
3014.94:397:32

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.02 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 6.02 kWh/m² in June across the year — June's 6.02 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
166.0Intense
176.0Intense
186.0Intense
196.0Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in June

Is June a good time to visit Allentown?

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

6.0
Sightseeing
3rd-best month of the year
6.3
Beach & pool
3rd-best month of the year

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

What to pack for Allentown in June

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

In June, Allentown sees daytime highs around 81°F and nights near 62°F. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Allentown in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Allentown 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 Allentown in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Allentown is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1417 µg/m³Nov 148 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May16Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Allentown?

Allentown sits at 40.6°N, 75.5°W, 338 ft above sea level, in United States. The nearest listed city is Whitehall Township, 4.3 mi away.

Topography around Allentown

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

Within 2 miles, the terrain around Allentown has only modest variations in elevation — a maximum elevation change of 285 ft around an average of 344 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,125 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,516 ft.

The land around Allentown is covered by trees (43%) and artificial surfaces (42%) within 2 miles, trees (47%) and grassland (22%) within 10 miles, and trees (71%) within 50 miles.

2 miles
285 ft
10 miles
1,125 ft
50 miles
2,516 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Whitehall Township 4.3 mi · Bethlehem 6.2 mi · Easton 15 mi · Limerick 26 mi · Pottstown 27 mi · Lansdale 27 mi · Reading 30 mi · Phoenixville 33 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 Allentown (40.6084°, -75.4902°, elevation 338 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).