Willow Grove weather in August

In August, Willow Grove sees average daytime highs of 83°F and overnight lows near 67°F, with 4.1 in of rain across 10.2 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 85°F in the first days to 82°F by the end. The sky is clear or mostly clear about 28% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Willow Grove's 4th-clearest and 12th-windiest month. For the whole year in context, see Willow Grove's year-round climate.

Daytime high
83°
2nd warmest
Overnight low
67°
11th coldest
Rainfall
4.1 in
10.2 wet days
Daylight
13 h 36 min
5:17 AM – 6:53 PM
Cloud cover
58%
4th clearest
Wind
5 mph
12th windiest
Solar energy
5.21 kWh/m²
Travel score
5.7
out of 10

Willow Grove is census-designated place in Pennsylvania, USA.

Density
1,657/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 85°F in the first days to 82°F by the end.

A typical August day in Willow Grove reaches about 83°F in the afternoon and slips back to 67°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 90°F. Set against its neighbours, August runs about 2°F cooler than July and about 7°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18569
28568
38568
48568
58568
68568
78468
88468
98468
108468
118468
128467
138467
148367
158367
168367
178367
188367
198367
208366
218366
228366
238366
248266
258266
268265
278265
288265
298265
308265
318165

How August really feels in Willow Grove

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.

Willow Grove weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 26°3.39.249.50.0
Feb42° / 27°3.093.410.40.4
Mar51° / 34°4.210.82.911.72.4
Apr62° / 44°3.7110.3135.1
May72° / 54°3.612014.26.3
Jun81° / 63°4.211.2014.86.0
Jul85° / 68°4.311.5014.65.0
Aug83° / 67°4.110.2013.65.7
Sep77° / 60°4.29.4012.36.9
Oct65° / 48°3.78.80.110.96.1
Nov54° / 38°3.08.10.49.83.4
Dec44° / 31°4.09.32.29.20.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34852
44852
54852
64753
74753
84852
94852
104852
114852
124753
134852
144852
154852
164951
174951
185050
195050
205050
215050
225149
235149
245149
255149
265149
275149
285149
295149
305149
315149

Chance of precipitation in August

Any precipitation

Willow Grove gets around 4.1 in of rain over 10.2 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 34% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
337
437
537
637
737
837
937
1037
1137
1237
1337
1437
1537
1636
1735
1835
1934
2033
2132
2231
2330
2429
2528
2628
2727
2827
2926
3026
3127

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 44% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11015253118
21015253118
31115253118
41115253118
51116253118
61216253018
71216243018
81215243118
91215243117
101215243117
111315243216
121316243216
131316243216
141316243215
151316243215
161317253114
171317253114
181417253013
191418253013
201418253013
211518252912
221619252912
231619252812
241720252711
251820242611
261920242611
271921242511
282021242411
292121232311
302221232311
312221232211

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 6 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
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 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 66 minutes over August. Sunrise moves from 5:02 AM to 5:31 AM, and sunset from 7:11 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:027:11
214.15:037:10
314.15:047:09
414.05:057:08
514.05:067:07
614.05:077:05
713.95:087:04
813.95:097:03
913.95:107:02
1013.85:117:01
1113.85:126:59
1213.85:136:58
1313.75:146:57
1413.75:156:55
1513.65:166:54
1613.65:176:53
1713.65:186:51
1813.55:186:50
1913.55:196:48
2013.45:206:47
2113.45:216:45
2213.45:226:44
2313.35:236:42
2413.35:246:41
2513.25:256:39
2613.25:266:38
2713.15:276:36
2813.15:286:35
2913.15:296:33
3013.05:306:31
3113.05:316:30

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.21 kWh/m².

For context, solar energy here swings from a low near 1.8 kWh/m² to a high of 6.01 kWh/m² in June across the year — August's 5.21 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.1Bright
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

Is August a good time to visit Willow Grove?

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

5.7
Sightseeing
5th-best month of the year
6.8
Beach & pool
1st-best month of the year

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

What to pack for Willow Grove in August

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

In August, Willow Grove sees daytime highs around 83°F and nights near 67°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Willow Grove in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Willow Grove peaks around July 10 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 10UV 8Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Willow Grove 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 Willow Grove is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1518 µg/m³Nov 149 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar14Moderate
Apr14Moderate
May16Moderate
Jun17Moderate
Jul18Moderate
Aug15Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Willow Grove?

Willow Grove sits at 40.1°N, 75.1°W, 269 ft above sea level, in United States. The nearest listed city is Abington, 1.9 mi away.

Topography around Willow Grove

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

Within 2 miles, the terrain around Willow Grove has only modest variations in elevation — a maximum elevation change of 289 ft around an average of 295 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 666 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,864 ft.

The land around Willow Grove is covered by trees (69%) and artificial surfaces (20%) within 2 miles, trees (61%) and artificial surfaces (22%) within 10 miles, and trees (65%) within 50 miles.

2 miles
289 ft
10 miles
666 ft
50 miles
1,864 ft
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Abington 1.9 mi · Fox Chase 5.0 mi · Somerton 5.6 mi · West Oak Lane 5.6 mi · Bustleton 6.2 mi · Rhawnhurst 6.2 mi · Lawndale 6.8 mi · East Mount Airy 6.8 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 Willow Grove (40.144°, -75.1157°, elevation 269 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).