Rock Hill weather in August

In August, Rock Hill sees average daytime highs of 88°F and overnight lows near 71°F, with 4.0 in of rain across 11.5 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 88°F through the month. The sky is clear or mostly clear about 29% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Rock Hill's 9th-clearest and 12th-windiest month. For the whole year in context, see Rock Hill's year-round climate.

Daytime high
88°
2nd warmest
Overnight low
71°
11th coldest
Rainfall
4.0 in
11.5 wet days
Daylight
13 h 18 min
5:49 AM – 7:08 PM
Cloud cover
58%
9th clearest
Wind
4 mph
12th windiest
Solar energy
5.38 kWh/m²
Travel score
4.4
out of 10

Rock Hill is city in York County, South Carolina, United States.

Density
737/km²
people per km²
Founded
1852

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 88°F through the month.

A typical August day in Rock Hill reaches about 88°F in the afternoon and slips back to 71°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 95°F. Set against its neighbours, August runs about 2°F cooler than July and about 6°F warmer than September.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
18972
28972
38972
48971
58971
68971
78871
88871
98871
108871
118871
128871
138871
148871
158871
168871
178871
188871
198771
208770
218770
228770
238770
248770
258770
268769
278769
288769
298769
308669
318669

How August really feels in Rock Hill

Once humidity and wind are folded in, August averages 27 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
27
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Rock Hill weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan52° / 34°3.89.519.92.9
Feb56° / 37°3.48.80.710.73.8
Mar64° / 43°4.29.90.311.75.7
Apr73° / 52°3.58.7012.97.0
May80° / 60°2.99.6013.86.5
Jun87° / 68°3.811.8014.34.5
Jul90° / 72°3.713.5014.13.6
Aug88° / 71°4.011.5013.34.4
Sep82° / 64°3.78.4012.26.3
Oct72° / 53°3.36.9011.17.4
Nov62° / 42°3.27.50.110.25.8
Dec54° / 37°3.89.10.59.73.5

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 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
65149
75149
85149
95050
105050
115050
125050
135050
145050
155050
165149
175149
185149
195248
205248
215248
225248
235248
245248
255347
265248
275248
285347
295347
305347
315347

Chance of precipitation in August

Any precipitation

Rock Hill gets around 4.0 in of rain over 11.5 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 38% and peaks near 44% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
144
243
343
442
542
642
742
841
941
1041
1141
1240
1340
1439
1539
1638
1737
1837
1936
2036
2135
2234
2334
2434
2533
2633
2733
2833
2932
3032
3132

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 40% of days. Sticky, muggy-or-worse air turns up on roughly 79% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1151134480
2261134480
3261134470
4261134470
5261234460
6261234460
7261235460
8261235460
9261235460
10251136461
11151136451
12151136451
13151137451
14151137451
15151138441
16151138431
17151239421
18151240411
19151241401
20151242381
21151343371
22161344361
23161344341
24261445330
25271445320
26271545310
27281645300
28291644280
29391743270
303101843260
313111942250

Wind in August

Winds average 4 mph in August, the calmest month.

Across August, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 5:37 AM to 6:00 AM, and sunset from 7:23 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:377:23
213.75:387:22
313.75:387:22
413.75:397:21
513.75:407:20
613.65:417:19
713.65:427:18
813.65:427:17
913.55:437:16
1013.55:447:15
1113.55:457:14
1213.55:457:12
1313.45:467:11
1413.45:477:10
1513.45:487:09
1613.35:497:08
1713.35:497:07
1813.35:507:05
1913.25:517:04
2013.25:527:03
2113.25:527:02
2213.15:537:00
2313.15:546:59
2413.15:556:58
2513.05:556:57
2613.05:566:55
2712.95:576:54
2812.95:586:52
2912.95:586:51
3012.85:596:50
3112.86:006:48

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.38 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 6.17 kWh/m² in June across the year — August's 5.38 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Rock Hill?

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

4.4
Sightseeing
8th-best month of the year
6.4
Beach & pool
3rd-best month of the year

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

What to pack for Rock Hill in August

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

In August, Rock Hill sees daytime highs around 88°F and nights near 71°F. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Rock Hill in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rock Hill peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 12UV 9Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct5Moderate
Nov4Moderate
Dec2Moderate

Air quality in Rock Hill 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 Rock Hill is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1718 µg/m³Dec 219 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar12Moderate
Apr12Good
May14Moderate
Jun17Moderate
Jul19Moderate
Aug17Moderate
Sep13Moderate
Oct10Good
Nov9Good
Dec9Good
Location & terrain

Where is Rock Hill?

Rock Hill sits at 34.9°N, 81.0°W, 679 ft above sea level, in United States. The nearest listed city is Matthews, 22 mi away.

Topography around Rock Hill

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

Within 2 miles, the terrain around Rock Hill has only modest variations in elevation — a maximum elevation change of 167 ft around an average of 643 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 486 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,421 ft.

The land around Rock Hill is covered by trees (62%) and artificial surfaces (22%) within 2 miles, trees (68%) and grassland (20%) within 10 miles, and trees (77%) within 50 miles.

2 miles
167 ft
10 miles
486 ft
50 miles
1,421 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Matthews 22 mi · Stallings 22 mi · Indian Trail 23 mi · Charlotte 23 mi · Gastonia 25 mi · Monroe 27 mi · Mint Hill 28 mi · Huntersville 35 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 Rock Hill (34.9249°, -81.0251°, elevation 679 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).