Summerville weather in December: Summerville, South Carolina: normal highs, lows, rain and records for December
Summerville in December has a normal high of 61°F and a normal low of 37°F, a daily mean of 49°F, falling from 64°F on the 1st to 59°F by the 31st. The month brings 3.42 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 16°C and low of 3°C, 87 mm of precipitation in December.
- 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 December?
The normal high is 61°F and the normal low 37°F, for a daily mean of 49.3°F. December is 5.6°F cooler than November and 2.9°F warmer than January. December is the 11th warmest month of the year in Summerville and the 10th wettest. Across the month the normal high falls 5°F, from 64°F on December 1 to 59°F on December 31. From one year to the next December's mean temperature typically moves about 4.8°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 45°F and 54°F.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 64°F | 39°F | – | – |
| December 8 | 63°F | 38°F | – | – |
| December 15 | 61°F | 38°F | – | – |
| December 22 | 60°F | 37°F | – | – |
| December 31 | 59°F | 36°F | – | – |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 64°F | 39°F | – | – | 10 h 10 min |
| December 2 | 64°F | 39°F | – | – | 10 h 10 min |
| December 3 | 63°F | 39°F | – | – | 10 h 10 min |
| December 4 | 63°F | 39°F | – | – | 10 h 10 min |
| December 5 | 63°F | 39°F | – | – | 10 h 10 min |
| December 6 | 63°F | 39°F | – | – | 10 h |
| December 7 | 63°F | 39°F | – | – | 10 h |
| December 8 | 63°F | 38°F | – | – | 10 h |
| December 9 | 62°F | 38°F | – | – | 10 h |
| December 10 | 62°F | 38°F | – | – | 10 h |
| December 11 | 62°F | 38°F | – | – | 10 h |
| December 12 | 62°F | 38°F | – | – | 10 h |
| December 13 | 62°F | 38°F | – | – | 10 h |
| December 14 | 62°F | 38°F | – | – | 10 h |
| December 15 | 61°F | 38°F | – | – | 10 h |
| December 16 | 61°F | 37°F | – | – | 10 h |
| December 17 | 61°F | 37°F | – | – | 10 h |
| December 18 | 61°F | 37°F | – | – | 10 h |
| December 19 | 61°F | 37°F | – | – | 10 h |
| December 20 | 61°F | 37°F | – | – | 10 h |
| December 21 | 61°F | 37°F | – | – | 10 h |
| December 22 | 60°F | 37°F | – | – | 10 h |
| December 23 | 60°F | 37°F | – | – | 10 h |
| December 24 | 60°F | 36°F | – | – | 10 h |
| December 25 | 60°F | 36°F | – | – | 10 h |
| December 26 | 60°F | 36°F | – | – | 10 h |
| December 27 | 60°F | 36°F | – | – | 10 h |
| December 28 | 60°F | 36°F | – | – | 10 h |
| December 29 | 59°F | 36°F | – | – | 10 h |
| December 30 | 59°F | 36°F | – | – | 10 h |
| December 31 | 59°F | 36°F | – | – | 10 h |
- Normal high
- 61°FDecember average
- Normal low
- 37°FDecember average
- Precipitation
- 3.42 inmonth total
- Nights at 32°F or colder
- 11
- Daylight
- 10 h 10 min to 10 hDecember 1 to December 31
- Days at 70°F or more
- 8
- Days at 80°F or more
- 1
- Sunshine
- 76%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 December?
In a normal December in Summerville, 11 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00388426.
What are the records for December in Summerville?
The warmest December temperature on this station's record (since 1898) is 87°F, on December 18, 2008; the coldest is 9°F, on December 26, 1983. The wettest December brought 10.14 in (2018); the snowiest, 6.5 inches (1915).
The December mean against the 1991-2020 normal of 49.3°F: 2023 52.2°F (+2.9), 2024 49.8°F (+0.5), 2025 50.3°F (+1.0). 3 of 3 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2023 | 52.2°F | +2.9°F | 7.55 in |
| 2024 | 49.8°F | +0.5°F | 4.20 in |
| 2025 | 50.3°F | +1.0°F | 1.33 in |
Source: records: ACIS, station USC00388426; recent months: ACIS, station USC00388426. Records and recent months use complete months only.
How does December in Summerville compare across South Carolina?
Across the 73 places PlainClimate covers in South Carolina, December normal highs run from 48°F in Caesars Head to 64°F in Hampton; Summerville's is 61°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Summerville in November68°F by day, 42°F at night
- Summerville in January58°F by day, 35°F at night
- Summerville through the yearEvery month, frost dates, records and recent years
- South Carolina in DecemberThe statewide normal and the warmest and coolest places
- Hampton: South Carolina's warmest Decembernormal high 64°F