Williamsport weather in June

In June, Williamsport sees average daytime highs of 77°F and overnight lows near 58°F, with 4.2 in of rain across 11.9 wet days and about 14.9 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 74°F in the first days to 80°F by the end. The sky is clear or mostly clear about 23% 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 Williamsport's 5th-clearest and 9th-windiest month. For the whole year in context, see Williamsport's year-round climate.

Daytime high
77°
3rd warmest
Overnight low
58°
10th coldest
Rainfall
4.2 in
11.9 wet days
Daylight
15 hours
4:40 AM – 7:37 PM
Cloud cover
63%
5th clearest
Wind
5 mph
9th windiest
Solar energy
5.98 kWh/m²
Travel score
6.4
out of 10

Williamsport is city in and county seat of Lycoming County, Pennsylvania, United States.

Density
1,196/km²
people per km²
Founded
1769

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 74°F in the first days to 80°F by the end.

A typical June day in Williamsport reaches about 77°F in the afternoon and slips back to 58°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 86°F. Set against its neighbours, June runs about 9°F warmer than May and about 4°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17355
27455
37455
47455
57456
67556
77556
87556
97557
107657
117657
127658
137658
147758
157758
167759
177859
187859
197859
207860
217860
227960
237960
247960
257961
268061
278061
288061
298061
308062

How June really feels in Williamsport

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.

Williamsport 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
Jan33° / 20°3.210.16.39.40.0
Feb36° / 21°2.79.15.610.30.0
Mar46° / 29°3.9114.411.71.1
Apr58° / 40°4.111.81.213.14.1
May68° / 49°4.013.2014.35.8
Jun77° / 58°4.211.9014.96.4
Jul81° / 63°3.711.5014.76.2
Aug80° / 62°3.710.5013.76.5
Sep72° / 54°4.69.5012.36.8
Oct60° / 43°3.9100.310.94.9
Nov48° / 34°3.591.49.71.8
Dec38° / 26°3.510.14.69.10.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 21% of June, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24456
34456
44456
54456
64456
74456
84258
94258
104258
114258
124357
134258
144258
154357
164357
174357
184456
194456
204654
214555
224555
234753
244753
254753
264852
274951
284951
294951
304951

Chance of precipitation in June

Any precipitation

Williamsport gets around 4.2 in of rain over 11.9 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 40% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
240
340
440
539
639
739
840
940
1040
1140
1240
1340
1440
1540
1640
1740
1841
1941
2040
2140
2240
2340
2440
2539
2639
2739
2839
2939
3039

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
156181970
254191980
353192080
452192090
552192090
6501921100
7491921100
8481921110
9471922111
10452022121
11432023131
12412124141
13402124141
14382125151
15362226151
16342226161
17332327161
18322327171
19302427171
20292527181
21282527182
22262627182
23252727192
24242727192
25232727203
26222827203
27212827213
28212827214
29202827214
30202727225

Wind in June

Winds average 5 mph in June.

Across June, 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.

0246810151015202530
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

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 4:43 AM to 4:43 AM, and sunset from 7:28 PM to 7:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:437:28
214.84:437:29
314.84:427:29
414.84:427:30
514.84:417:31
614.84:417:31
714.94:417:32
814.94:417:33
914.94:407:33
1014.94:407:34
1114.94:407:35
1214.94:407:35
1314.94:407:36
1414.94:407:36
1514.94:407:37
1615.04:407:37
1715.04:407:37
1815.04:407:38
1915.04:407:38
2015.04:407:38
2115.04:407:39
2215.04:407:39
2315.04:407:39
2415.04:417:39
2515.04:417:39
2615.04:417:40
2715.04:417:40
2815.04:427:40
2915.04:427:40
3014.94:437:40

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.98 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.56 kWh/m² to a high of 5.98 kWh/m² in June across the year — June's 5.98 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
85.9Bright
95.9Bright
105.9Bright
115.9Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Intense
186.0Intense
196.0Intense
206.0Intense
216.0Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in June

Is June a good time to visit Williamsport?

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

6.4
Sightseeing
3rd-best month of the year
5.7
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Williamsport for sightseeing.

What to pack for Williamsport in June

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

In June, Williamsport sees daytime highs around 77°F and nights near 58°F. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Williamsport in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Williamsport peaks around June 23 at about 9 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Williamsport 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 Williamsport is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1415 µg/m³Nov 127 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr11Good
May13Moderate
Jun14Moderate
Jul15Moderate
Aug13Moderate
Sep11Good
Oct7Good
Nov7Good
Dec8Good
Location & terrain

Where is Williamsport?

Williamsport sits at 41.2°N, 77.0°W, 518 ft above sea level, in United States. The nearest listed city is Back Mountain, 53 mi away.

Topography around Williamsport

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

Within 2 miles, the terrain around Williamsport has significant variations in elevation — a maximum elevation change of 1,148 ft around an average of 686 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,585 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,228 ft.

The land around Williamsport is covered by trees (48%) and artificial surfaces (29%) within 2 miles, trees (68%) within 10 miles, and trees (79%) within 50 miles.

2 miles
1,148 ft
10 miles
1,585 ft
50 miles
2,228 ft
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Back Mountain 53 mi · State College 55 mi · Hazleton 57 mi · Wilkes-Barre 58 mi · Elmira 60 mi · Harrisburg 67 mi · Lebanon 70 mi · Scranton 70 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 Williamsport (41.2412°, -77.0011°, elevation 518 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).