Summerville weather in August: Summerville, South Carolina: normal highs, lows, rain and records for August
Summerville in August has a normal high of 90°F and a normal low of 70°F, a daily mean of 80°F, falling from 90°F on the 1st to 88°F by the 31st. The month brings 6.17 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 21°C, 157 mm of precipitation in August.
- NOAA stationSummerville (4 mi W)
- Station IDUSC00388426
- Location33.04°N 80.23°W
- Elevation65 ft (20 m)
- Population52,625
- Jan 58° 35°
- Feb 62° 37°
- Mar 69° 42°
- Apr 76° 50°
- May 82° 59°
- Jun 87° 67°
- Jul 90° 71°
- Aug 90° 70°
- Sep 85° 65°
- Oct 77° 53°
- Nov 68° 42°
- Dec 61° 37°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Summerville in August?
The normal high is 90°F and the normal low 70°F, for a daily mean of 80.1°F. August is 0.4°F cooler than July and 5.3°F warmer than September. August is the 2nd warmest month of the year in Summerville and the 2nd wettest. Across the month the normal high falls 2°F, from 90°F on August 1 to 88°F on August 31. From one year to the next August's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 78°F and 82°F.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 90°F | 71°F | – | – |
| August 8 | 90°F | 71°F | – | – |
| August 15 | 90°F | 71°F | – | – |
| August 22 | 89°F | 70°F | – | – |
| August 31 | 88°F | 69°F | – | – |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 90°F | 71°F | – | – | 13 h 50 min |
| August 2 | 90°F | 71°F | – | – | 13 h 50 min |
| August 3 | 90°F | 71°F | – | – | 13 h 40 min |
| August 4 | 90°F | 71°F | – | – | 13 h 40 min |
| August 5 | 90°F | 71°F | – | – | 13 h 40 min |
| August 6 | 90°F | 71°F | – | – | 13 h 40 min |
| August 7 | 90°F | 71°F | – | – | 13 h 40 min |
| August 8 | 90°F | 71°F | – | – | 13 h 40 min |
| August 9 | 90°F | 71°F | – | – | 13 h 30 min |
| August 10 | 90°F | 71°F | – | – | 13 h 30 min |
| August 11 | 90°F | 71°F | – | – | 13 h 30 min |
| August 12 | 90°F | 71°F | – | – | 13 h 30 min |
| August 13 | 90°F | 71°F | – | – | 13 h 30 min |
| August 14 | 90°F | 71°F | – | – | 13 h 30 min |
| August 15 | 90°F | 71°F | – | – | 13 h 20 min |
| August 16 | 90°F | 71°F | – | – | 13 h 20 min |
| August 17 | 90°F | 71°F | – | – | 13 h 20 min |
| August 18 | 90°F | 71°F | – | – | 13 h 20 min |
| August 19 | 90°F | 70°F | – | – | 13 h 20 min |
| August 20 | 90°F | 70°F | – | – | 13 h 20 min |
| August 21 | 90°F | 70°F | – | – | 13 h 10 min |
| August 22 | 89°F | 70°F | – | – | 13 h 10 min |
| August 23 | 89°F | 70°F | – | – | 13 h 10 min |
| August 24 | 89°F | 70°F | – | – | 13 h 10 min |
| August 25 | 89°F | 70°F | – | – | 13 h 10 min |
| August 26 | 89°F | 70°F | – | – | 13 h |
| August 27 | 89°F | 69°F | – | – | 13 h |
| August 28 | 89°F | 69°F | – | – | 13 h |
| August 29 | 89°F | 69°F | – | – | 13 h |
| August 30 | 88°F | 69°F | – | – | 13 h |
| August 31 | 88°F | 69°F | – | – | 13 h |
- Normal high
- 90°FAugust average
- Normal low
- 70°FAugust average
- Precipitation
- 6.17 inmonth total
- Days at 90°F or more
- 19
- Daylight
- 13 h 50 min to 13 hAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00388426; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Summerville in August?
In a normal August in Summerville, 19 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00388426.
What are the records for August in Summerville?
The warmest August temperature on this station's record (since 1898) is 106°F, on August 18, 1954; the coldest is 55°F, on August 19, 1979. The wettest August brought 16.45 in (1940).
The August mean against the 1991-2020 normal of 80.1°F: 2022 80.7°F (+0.6), 2023 82.4°F (+2.3), 2024 80.5°F (+0.5), 2025 79.0°F (−1.1), 2026 83.1°F (+3.0). 4 of 5 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 80.7°F | +0.6°F | 6.68 in |
| 2023 | 82.4°F | +2.3°F | 10.88 in |
| 2024 | 80.5°F | +0.5°F | 15.84 in |
| 2025 | 79.0°F | −1.1°F | 11.55 in |
| 2026 | 83.1°F | +3.0°F | 4.45 in |
Source: records: ACIS, station USC00388426; recent months: ACIS, station USC00388426. Records and recent months use complete months only.
How does August in Summerville compare across South Carolina?
Across the 73 places PlainClimate covers in South Carolina, August normal highs run from 76°F in Caesars Head to 92°F in Pelion; Summerville's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Summerville in July90°F by day, 71°F at night
- Summerville in September85°F by day, 65°F at night
- Summerville through the yearEvery month, frost dates, records and recent years
- South Carolina in AugustThe statewide normal and the warmest and coolest places
- Pelion: South Carolina's warmest Augustnormal high 92°F