Johnstown weather in July

In July, Johnstown sees average daytime highs of 78°F and overnight lows near 62°F, with 4.1 in of rain across 14.1 wet days and about 14.6 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 78°F through the month. The sky is clear or mostly clear about 24% 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 Johnstown's 4th-clearest and 11th-windiest month. For the whole year in context, see Johnstown's year-round climate.

Daytime high
78°
1st warmest
Overnight low
62°
12th coldest
Rainfall
4.1 in
14.1 wet days
Daylight
14 h 36 min
5:03 AM – 7:40 PM
Cloud cover
60%
4th clearest
Wind
5 mph
11th windiest
Solar energy
5.85 kWh/m²
Travel score
6.2
out of 10

Johnstown is city in Cambria County, Pennsylvania, United States.

Density
1,266/km²
people per km²
Founded
1770

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 78°F through the month.

A typical July day in Johnstown reaches about 78°F in the afternoon and slips back to 62°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 85°F. Set against its neighbours, July runs about 4°F warmer than June and on par with August.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
17760
27760
37861
47861
57861
67861
77861
87861
97861
107861
117861
127862
137862
147862
157862
167862
177862
187862
197862
207862
217862
227862
237862
247862
257862
267862
277862
287862
297862
307862
317861

How July really feels in Johnstown

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.

Johnstown weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 20°3.714.410.99.50.0
Feb36° / 21°3.412.49.110.40.0
Mar45° / 29°4.414.16.411.70.9
Apr58° / 39°4.714.62.4133.7
May67° / 49°5.015.4014.25.3
Jun74° / 58°4.814.2014.86.1
Jul78° / 62°4.114.1014.66.2
Aug77° / 60°3.512.3013.66.5
Sep71° / 53°3.910.8012.36.5
Oct59° / 42°3.711.40.810.94.5
Nov47° / 33°3.511.53.59.81.6
Dec38° / 25°3.913.37.69.20.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 24% of July, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24654
34654
44753
54654
64753
74951
84951
94951
104951
114951
125050
134951
144951
155050
165050
174951
184951
194951
204852
214753
224753
234753
244753
254753
264852
274951
284951
294951
304951
315149

Chance of precipitation in July

Any precipitation

Johnstown gets around 4.1 in of rain over 14.1 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 45% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
144
244
343
443
543
643
743
842
942
1042
1142
1242
1343
1443
1544
1644
1745
1846
1946
2047
2147
2247
2347
2447
2547
2647
2747
2847
2946
3046
3145

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 31% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1212528250
2212428260
3212428270
4202428270
5202427280
6202427281
7202427291
8192427291
9192427301
10192327301
11182327311
12182327311
13172327312
14172327312
15162327312
16162327312
17162327313
18152228323
19142228323
20142229323
21132229323
22132330313
23122330313
24122331303
25122431303
26122432293
27122432283
28122533283
29132533273
30132533262
31142533252

Wind in July

Winds average 5 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
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 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 4:54 AM to 5:16 AM, and sunset from 7:44 PM to 7:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.84:547:44
214.84:547:44
314.84:557:44
414.84:557:44
514.84:567:44
614.84:567:44
714.84:577:43
814.84:577:43
914.74:587:43
1014.74:597:42
1114.74:597:42
1214.75:007:42
1314.75:017:41
1414.75:017:41
1514.65:027:40
1614.65:037:40
1714.65:047:39
1814.65:057:38
1914.55:057:38
2014.55:067:37
2114.55:077:36
2214.55:087:36
2314.45:097:35
2414.45:107:34
2514.45:107:33
2614.45:117:32
2714.35:127:32
2814.35:137:31
2914.35:147:30
3014.25:157:29
3114.25:167:28

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.85 kWh/m².

For context, solar energy here swings from a low near 1.58 kWh/m² to a high of 5.94 kWh/m² in June across the year — July's 5.85 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Bright
136.0Bright
146.0Bright
155.9Bright
165.9Bright
175.9Bright
185.8Bright
195.8Bright
205.8Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in July

Is July a good time to visit Johnstown?

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

6.2
Sightseeing
3rd-best month of the year
5.8
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Johnstown for sightseeing.

What to pack for Johnstown in July

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

In July, Johnstown sees daytime highs around 78°F and nights near 62°F. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

UV index in Johnstown in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Johnstown peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 23UV 9Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Johnstown 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 Johnstown is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1316 µg/m³Nov 147 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar11Good
Apr12Good
May14Moderate
Jun16Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov7Good
Dec8Good
Location & terrain

Where is Johnstown?

Johnstown sits at 40.3°N, 78.9°W, 1,168 ft above sea level, in United States. The nearest listed city is Altoona, 30 mi away.

Topography around Johnstown

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

Within 2 miles, the terrain around Johnstown has significant variations in elevation — a maximum elevation change of 837 ft around an average of 1,493 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,831 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,641 ft.

The land around Johnstown is covered by trees (66%) and artificial surfaces (20%) within 2 miles, trees (79%) within 10 miles, and trees (77%) within 50 miles.

2 miles
837 ft
10 miles
1,831 ft
50 miles
2,641 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Altoona 30 mi · Murrysville 42 mi · Plum 45 mi · Monroeville 46 mi · Cumberland 47 mi · McKeesport 50 mi · Penn Hills 50 mi · West Mifflin 50 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 Johnstown (40.3267°, -78.922°, elevation 1,168 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).