Charleston Weather in December
Average highs run from 56°F on December 1 to 50°F on December 31, and lows from 34°F to 29°F. Normal precipitation for the month is 4.35 in over about 8 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 52°F
- Average low
- 31°F
- Precipitation
- 4.35 in
- Snowfall
- 0.2 in
- Record high
- 84°FDec 27, 2025
- Record low
- -5°FDec 23, 1989
- Chance of a freeze
- 100%
- Daylight
- 9 h 57 min to 9 h 49 min
- Cloud cover
- 60%
- Humidity
- 83%
- Dew point
- 34°F
- Wind
- 5.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 56°F | 34°F | 77°F 1982 | 18°F 1975 | 26% | 0% |
| Dec 2 | 56°F | 33°F | 78°F 2012 | 15°F 1985 | 26% | 0% |
| Dec 3 | 56°F | 33°F | 80°F 2012 | 21°F 1974 | 26% | 0% |
| Dec 4 | 56°F | 33°F | 79°F 2001 | 20°F 1974 | 26% | 0% |
| Dec 5 | 55°F | 33°F | 79°F 1956 | 17°F 1950 | 26% | 0% |
| Dec 6 | 55°F | 32°F | 76°F 1966 | 9°F 1950 | 26% | 0% |
| Dec 7 | 55°F | 32°F | 81°F 1966 | 6°F 1950 | 26% | 0% |
| Dec 8 | 54°F | 32°F | 80°F 1991 | 11°F 2005 | 26% | 0% |
| Dec 9 | 54°F | 32°F | 73°F 2021 | 9°F 2005 | 26% | 1% |
| Dec 10 | 54°F | 32°F | 80°F 2021 | 13°F 1995 | 26% | 1% |
| Dec 11 | 53°F | 31°F | 77°F 1949 | 16°F 1957 | 26% | 1% |
| Dec 12 | 53°F | 31°F | 75°F 2015 | 7°F 1962 | 26% | 1% |
| Dec 13 | 53°F | 31°F | 80°F 1948 | 10°F 1958 | 26% | 1% |
| Dec 14 | 53°F | 31°F | 73°F 1975 | 6°F 1958 | 26% | 1% |
| Dec 15 | 52°F | 31°F | 79°F 1948 | 4°F 1958 | 26% | 1% |
| Dec 16 | 52°F | 31°F | 76°F 2006 | 5°F 1989 | 26% | 1% |
| Dec 17 | 52°F | 30°F | 76°F 2006 | 10°F 1979 | 26% | 1% |
| Dec 18 | 52°F | 30°F | 73°F 2002 | 8°F 1964 | 26% | 1% |
| Dec 19 | 51°F | 30°F | 77°F 1978 | 8°F 1945 | 26% | 1% |
| Dec 20 | 51°F | 30°F | 71°F 1949 | 11°F 1989 | 26% | 1% |
| Dec 21 | 51°F | 30°F | 74°F 2017 | 4°F 1989 | 26% | 1% |
| Dec 22 | 51°F | 30°F | 73°F 1982 | 1°F 1989 | 26% | 1% |
| Dec 23 | 51°F | 30°F | 81°F 2025 | -5°F 1989 | 26% | 1% |
| Dec 24 | 50°F | 29°F | 80°F 1955 | 0°F 1983 | 25% | 1% |
| Dec 25 | 50°F | 29°F | 79°F 2025 | -1°F 1983 | 25% | 1% |
| Dec 26 | 50°F | 29°F | 80°F 2025 | 5°F 1983 | 25% | 1% |
| Dec 27 | 50°F | 29°F | 84°F 2025 | 18°F 1950 | 25% | 1% |
| Dec 28 | 50°F | 29°F | 82°F 2025 | 16°F 1983 | 25% | 1% |
| Dec 29 | 50°F | 29°F | 77°F 1984 | 5°F 1983 | 25% | 1% |
| Dec 30 | 50°F | 29°F | 79°F 1951 | 2°F 1983 | 25% | 1% |
| Dec 31 | 50°F | 29°F | 82°F 1951 | 6°F 1976 | 25% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:07 AM, sunset 5:04 PM
- December 31
- sunrise 7:25 AM, sunset 5:14 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00030832 (Booneville 3 Sse), public domain. Records: NOAA GHCN-Daily, station USW00013964, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.