Westminster weather in August

In August, Westminster sees average daytime highs of 83°F and overnight lows near 67°F, with 3.5 in of rain across 10.3 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 8th-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 29% 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 Westminster's 4th-clearest and 12th-windiest month. For the whole year in context, see Westminster's year-round climate.

Daytime high
83°
2nd warmest
Overnight low
67°
11th coldest
Rainfall
3.5 in
10.3 wet days
Daylight
13 h 36 min
5:25 AM – 6:59 PM
Cloud cover
58%
4th clearest
Wind
5 mph
12th windiest
Solar energy
5.31 kWh/m²
Travel score
5.7
out of 10

Westminster is city in Carroll County, northern Maryland, United States.

Density
1,085/km²
people per km²
Founded
1764

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 Westminster 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 91°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)
18568
28568
38568
48568
58568
68468
78468
88468
98467
108467
118467
128467
138467
148467
158367
168367
178367
188367
198366
208366
218366
228366
238366
248366
258366
268265
278265
288265
298265
308265
318265

How August really feels in Westminster

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.

Westminster weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 26°3.28.83.59.50.0
Feb43° / 28°2.88.73.710.40.5
Mar52° / 35°3.910.52.611.72.7
Apr64° / 45°3.510.50.2135.4
May72° / 55°3.711.7014.16.4
Jun81° / 64°3.611.1014.75.9
Jul86° / 68°3.911.1014.55.0
Aug83° / 67°3.510.3013.65.7
Sep77° / 60°4.59.3012.36.9
Oct65° / 48°3.58010.96.2
Nov54° / 38°3.17.80.49.83.4
Dec44° / 31°3.68.92.19.30.8

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 22% of August, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
35050
45050
55050
65050
75050
85050
95050
105050
115050
125149
135149
145149
155248
165347
175347
185347
195347
205347
215446
225446
235446
245347
255347
265347
275248
285248
295248
305248
315248

Chance of precipitation in August

Any precipitation

Westminster gets around 3.5 in of rain over 10.3 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 37% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
236
336
436
536
636
736
836
936
1036
1136
1236
1336
1436
1536
1635
1735
1834
1934
2033
2133
2232
2332
2431
2531
2630
2730
2830
2930
3030
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 31% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1914273515
21014273415
31014263415
41115263415
51115263315
61115253315
71116253315
81116253215
91216253215
101216253215
111217253215
121217253214
131218253214
141218253114
151219253113
161219253113
171219253112
181220263112
191220263111
201220263110
211221263110
22132126319
23132226309
24142226308
25142325298
26152325298
27162424288
28172424278
29172423278
30182522268
31192522269

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 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 5:11 AM to 5:39 AM, and sunset from 7:17 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:117:17
214.15:127:16
314.05:137:15
414.05:147:14
514.05:157:13
613.95:157:12
713.95:167:11
813.95:177:09
913.85:187:08
1013.85:197:07
1113.85:207:06
1213.75:217:04
1313.75:227:03
1413.65:237:02
1513.65:247:01
1613.65:256:59
1713.55:266:58
1813.55:276:56
1913.55:286:55
2013.45:296:54
2113.45:306:52
2213.35:316:51
2313.35:326:49
2413.25:336:48
2513.25:346:46
2613.25:356:45
2713.15:366:43
2813.15:376:41
2913.05:376:40
3013.05:386:38
3113.05:396:37

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.31 kWh/m².

For context, solar energy here swings from a low near 1.88 kWh/m² to a high of 6.13 kWh/m² in June across the year — August's 5.31 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.1Bright
245.1Bright
255.1Bright
265.0Bright
275.0Bright
285.0Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in August

Is August a good time to visit Westminster?

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

What to pack for Westminster in August

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

In August, Westminster 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 Westminster 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 Westminster peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highHighModerateLowJul 10UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Westminster 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 Westminster is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 138 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar12Moderate
Apr12Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Westminster?

Westminster sits at 39.6°N, 77.0°W, 764 ft above sea level, in United States. The nearest listed city is Reisterstown, 11 mi away.

Topography around Westminster

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

Within 2 miles, the terrain around Westminster has only modest variations in elevation — a maximum elevation change of 397 ft around an average of 751 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,102 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,260 ft.

The land around Westminster is covered by trees (46%) and grassland (29%) within 2 miles, trees (47%), grassland (27%) and cropland (23%) within 10 miles, and trees (53%) within 50 miles.

2 miles
397 ft
10 miles
1,102 ft
50 miles
2,260 ft
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Reisterstown 11 mi · Eldersburg 12 mi · Hanover 16 mi · Owings Mills 16 mi · Randallstown 18 mi · Hunt Valley 20 mi · Milford Mill 20 mi · Cockeysville 20 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 Westminster (39.5754°, -76.9958°, 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. 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).