Pittsburgh weather in August

In August, Pittsburgh sees average daytime highs of 81°F and overnight lows near 63°F, with 3.7 in of rain across 11.9 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 81°F through the month. The sky is clear or mostly clear about 29% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Pittsburgh's 2nd-clearest and 12th-windiest month. For the whole year in context, see Pittsburgh's year-round climate.

Daytime high
81°
2nd warmest
Overnight low
63°
11th coldest
Rainfall
3.7 in
11.9 wet days
Daylight
13 h 36 min
5:36 AM – 7:13 PM
Cloud cover
57%
2nd clearest
Wind
5 mph
12th windiest
Solar energy
5.24 kWh/m²
Travel score
6.2
out of 10

Pittsburgh is city and county seat in Allegheny County, Pennsylvania, United States.

Density
2,015/km²
people per km²
Founded
1758

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 81°F through the month.

A typical August day in Pittsburgh reaches about 81°F in the afternoon and slips back to 63°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 89°F. Set against its neighbours, August runs about 1°F cooler than July and about 6°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18264
28264
38264
48264
58264
68264
78264
88164
98163
108163
118163
128163
138163
148163
158163
168163
178163
188163
198162
208162
218062
228062
238062
248062
258062
268062
278062
288061
298061
308061
317961

How August really feels in Pittsburgh

Once humidity and wind are folded in, August 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

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

Pittsburgh weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°3.6127.19.40.0
Feb40° / 24°3.110.85.810.40.1
Mar49° / 32°4.212.93.411.71.9
Apr62° / 42°4.713.81134.6
May70° / 51°4.814.3014.25.8
Jun79° / 60°5.013.6014.86.0
Jul82° / 64°4.614014.65.7
Aug81° / 63°3.711.9013.66.2
Sep74° / 56°4.010.4012.36.7
Oct62° / 45°3.710.70.210.95.3
Nov50° / 35°3.5101.49.82.3
Dec41° / 28°3.511.64.69.20.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25347
35347
45347
55347
65347
75248
85248
95248
105149
115050
125050
135050
145050
155149
165149
175149
185149
195149
205149
215248
225248
235347
245248
255347
265347
275446
285545
295446
305545
315545

Chance of precipitation in August

Any precipitation

Pittsburgh gets around 3.7 in of rain over 11.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
242
341
441
540
640
740
840
940
1040
1140
1240
1341
1441
1541
1641
1741
1841
1940
2040
2140
2239
2339
2438
2538
2637
2736
2835
2935
3034
3134

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 34% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1101930337
2101930337
3112030327
4112030317
5122030317
6122130307
7132130307
8132130297
9132130297
10142229296
11142229296
12142229296
13142329296
14142328296
15142328295
16142428295
17142428295
18152428295
19152428295
20152428284
21152428284
22162428284
23162428284
24172427284
25172427284
26182426274
27192525265
28202525265
29212525255
30222524245
31232524235

Wind in August

Winds average 5 mph in August, the calmest month.

Across August, 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 August

DaylightNight

Daylight runs from about 14 h 12 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 5:21 AM to 5:50 AM, and sunset from 7:31 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:217:31
214.15:227:30
314.15:237:29
414.15:247:28
514.05:257:27
614.05:267:26
714.05:277:24
813.95:287:23
913.95:297:22
1013.95:307:21
1113.85:317:19
1213.85:327:18
1313.75:337:17
1413.75:347:15
1513.75:357:14
1613.65:367:13
1713.65:377:11
1813.55:387:10
1913.55:397:08
2013.55:407:07
2113.45:417:05
2213.45:427:04
2313.35:437:02
2413.35:447:01
2513.25:456:59
2613.25:466:58
2713.25:476:56
2813.15:486:54
2913.15:496:53
3013.05:496:51
3113.05:506:50

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.24 kWh/m².

For context, solar energy here swings from a low near 1.5 kWh/m² to a high of 5.92 kWh/m² in June across the year — August's 5.24 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.4Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
274.9Bright
284.9Bright
294.9Bright
304.8Bright
314.8Bright
Planning a trip in August

Hazard calendar for Pittsburgh

In seasonPeak

In August, Pittsburgh sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Pittsburgh 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 August a good time to visit Pittsburgh?

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

6.2
Sightseeing
2nd-best month of the year
6.3
Beach & pool
1st-best month of the year

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

What to pack for Pittsburgh in August

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

In August, Pittsburgh sees daytime highs around 81°F and nights near 63°F. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Pittsburgh in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pittsburgh peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Pittsburgh in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Pittsburgh is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 147 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr11Good
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov7Good
Dec8Good
Location & terrain

Where is Pittsburgh?

Pittsburgh sits at 40.4°N, 80.0°W, 764 ft above sea level, in United States. The nearest listed city is Wilkinsburg, 6.2 mi away.

Topography around Pittsburgh

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

Within 2 miles, the terrain around Pittsburgh has only modest variations in elevation — a maximum elevation change of 564 ft around an average of 906 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 682 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,352 ft.

The land around Pittsburgh is covered by artificial surfaces (54%) and trees (35%) within 2 miles, trees (66%) and artificial surfaces (22%) within 10 miles, and trees (75%) within 50 miles.

2 miles
564 ft
10 miles
682 ft
50 miles
2,352 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Wilkinsburg 6.2 mi · Mount Lebanon 6.8 mi · Baldwin 6.8 mi · Bethel Park 8.1 mi · Allison Park 8.7 mi · Upper Saint Clair 8.7 mi · West Mifflin 8.7 mi · Penn Hills 9.3 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 Pittsburgh (40.4406°, -79.9959°, elevation 764 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). 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).