West Mifflin weather in August

In August, West Mifflin sees average daytime highs of 81°F and overnight lows near 63°F, with 3.7 in of rain across 11.8 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 West Mifflin's 2nd-clearest and 12th-windiest month. For the whole year in context, see West Mifflin's year-round climate.

Daytime high
81°
2nd warmest
Overnight low
63°
11th coldest
Rainfall
3.7 in
11.8 wet days
Daylight
13 h 36 min
5:35 AM – 7:12 PM
Cloud cover
57%
2nd clearest
Wind
5 mph
12th windiest
Solar energy
5.25 kWh/m²
Travel score
6.2
out of 10

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 West Mifflin 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 74°F and 88°F. Set against its neighbours, August runs on par with 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
68164
78164
88164
98163
108163
118163
128163
138163
148163
158163
168163
178163
188163
198163
208162
218162
228062
238062
248062
258062
268062
278062
288061
298061
308061
317961

How August really feels in West Mifflin

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.

West Mifflin 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° / 24°3.612.77.29.50.0
Feb40° / 25°3.211.45.810.40.1
Mar50° / 32°4.413.43.711.72.0
Apr62° / 43°4.514.21134.6
May71° / 52°4.914.3014.25.8
Jun79° / 60°5.014014.86.0
Jul82° / 64°4.914.5014.65.7
Aug81° / 63°3.711.8013.66.2
Sep75° / 56°3.810012.36.8
Oct63° / 45°3.610.60.210.95.4
Nov51° / 36°3.510.21.39.82.5
Dec42° / 29°3.611.94.79.20.2

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 (%)
15149
25149
35149
45149
55149
65149
75149
85149
95050
105050
115050
125050
135050
145050
155149
165149
175149
185248
195248
205248
215347
225446
235446
245446
255545
265545
275644
285545
295644
305644
315644

Chance of precipitation in August

Any precipitation

West Mifflin gets around 3.7 in of rain over 11.8 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 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
245
344
444
543
643
742
842
942
1041
1141
1241
1341
1441
1540
1640
1740
1839
1939
2038
2137
2237
2336
2436
2535
2634
2733
2833
2932
3032
3131

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 35% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
181930368
281930357
392030347
492030347
592130337
6102130327
7102230317
8112229318
9112229308
10112329307
11122329297
12122329297
13122329297
14122429297
15132429296
16132429286
17132429286
18142429286
19142429286
20142429275
21152429275
22152429275
23152429275
24162428275
25172428265
26172527265
27182527255
28192526255
29202526245
30212525245
31222525235

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 6:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:217:31
214.15:217:29
314.15:227:28
414.15:237:27
514.05:247:26
614.05:257:25
714.05:267:24
813.95:277:23
913.95:287:21
1013.85:297:20
1113.85:307:19
1213.85:317:17
1313.75:327:16
1413.75:337:15
1513.75:347:13
1613.65:357:12
1713.65:367:11
1813.55:377:09
1913.55:387:08
2013.55:397:06
2113.45:407:05
2213.45:417:03
2313.35:427:02
2413.35:437:00
2513.25:446:59
2613.25:456:57
2713.25:466:55
2813.15:476:54
2913.15:486:52
3013.05:496:51
3113.05:506:49

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.25 kWh/m².

For context, solar energy here swings from a low near 1.52 kWh/m² to a high of 5.93 kWh/m² in June across the year — August's 5.25 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
105.4Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.9Bright
314.8Bright
Planning a trip in August

Hazard calendar for West Mifflin

In seasonPeak

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

West Mifflin 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 West Mifflin?

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 West Mifflin for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for West Mifflin in August

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

In August, West Mifflin 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 West Mifflin 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 West Mifflin 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 West Mifflin 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 West Mifflin is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 148 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr12Good
May15Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is West Mifflin?

West Mifflin sits at 40.4°N, 79.9°W, 1,096 ft above sea level, in United States. The nearest listed city is McKeesport, 1.2 mi away.

Topography around West Mifflin

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

Within 2 miles, the terrain around West Mifflin has only modest variations in elevation — a maximum elevation change of 568 ft around an average of 948 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 692 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,346 ft.

The land around West Mifflin is covered by trees (46%) and artificial surfaces (34%) within 2 miles, trees (65%) and artificial surfaces (20%) within 10 miles, and trees (76%) within 50 miles.

2 miles
568 ft
10 miles
692 ft
50 miles
2,346 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: McKeesport 1.2 mi · Wilkinsburg 5.6 mi · Monroeville 5.6 mi · Baldwin 6.2 mi · Pittsburgh 8.7 mi · Bethel Park 9.3 mi · Penn Hills 9.3 mi · Mount Lebanon 9.9 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 West Mifflin (40.3634°, -79.8664°, elevation 1,096 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).