Mount Pleasant Weather in December
Average highs run from 43°F on December 1 to 36°F on December 31, and lows from 16°F to 12°F. Normal precipitation for the month is 1.16 in.
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
- 38°F
- Average low
- 13°F
- Precipitation
- 1.16 in
- Snowfall
- 8.0 in
- Record high
- 66°FDec 1, 1995
- Record low
- -34°FDec 23, 1990
- Chance of a freeze
- 100%
- Daylight
- 9 h 35 min to 9 h 26 min
- Cloud cover
- 57%
- Humidity
- 82%
- Dew point
- 13°F
- Wind
- 7.4 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 | 43°F | 16°F | 66°F 1995 | -6°F 2004 | 6% | |
| Dec 2 | 43°F | 16°F | 61°F 1998 | -7°F 2004 | 6% | |
| Dec 3 | 42°F | 16°F | 63°F 1998 | -12°F 2006 | 6% | |
| Dec 4 | 42°F | 15°F | 57°F 2021 | -25°F 2013 | 6% | |
| Dec 5 | 41°F | 15°F | 62°F 1958 | -23°F 2013 | 7% | |
| Dec 6 | 41°F | 15°F | 60°F 1958 | -15°F 2013 | 7% | |
| Dec 7 | 40°F | 15°F | 55°F 1977 | -7°F 1978 | 7% | |
| Dec 8 | 40°F | 14°F | 57°F 1970 | -18°F 2013 | 7% | |
| Dec 9 | 39°F | 14°F | 56°F 1981 | -27°F 2009 | 7% | |
| Dec 10 | 39°F | 14°F | 59°F 1981 | -24°F 2009 | 7% | |
| Dec 11 | 39°F | 14°F | 59°F 2025 | -17°F 2009 | 8% | |
| Dec 12 | 38°F | 13°F | 57°F 2025 | -14°F 2009 | 8% | |
| Dec 13 | 38°F | 13°F | 57°F 1995 | -8°F 1963 | 8% | |
| Dec 14 | 38°F | 13°F | 57°F 1998 | -8°F 1972 | 8% | |
| Dec 15 | 38°F | 13°F | 60°F 1977 | -13°F 1990 | 8% | |
| Dec 16 | 37°F | 13°F | 58°F 1962 | -13°F 2001 | 8% | |
| Dec 17 | 37°F | 13°F | 64°F 2025 | -8°F 2001 | 8% | |
| Dec 18 | 37°F | 12°F | 55°F 1958 | -15°F 2016 | 8% | |
| Dec 19 | 37°F | 12°F | 60°F 2025 | -15°F 1992 | 9% | |
| Dec 20 | 37°F | 12°F | 60°F 1981 | -16°F 1992 | 9% | |
| Dec 21 | 37°F | 12°F | 61°F 1969 | -17°F 1990 | 9% | |
| Dec 22 | 36°F | 12°F | 66°F 2025 | -27°F 1998 | 9% | |
| Dec 23 | 36°F | 12°F | 60°F 1964 | -34°F 1990 | 9% | |
| Dec 24 | 36°F | 12°F | 63°F 2025 | -28°F 1990 | 9% | |
| Dec 25 | 36°F | 12°F | 59°F 2025 | -16°F 2001 | 9% | |
| Dec 26 | 36°F | 12°F | 56°F 1980 | -20°F 2009 | 8% | |
| Dec 27 | 36°F | 12°F | 55°F 1980 | -22°F 1988 | 8% | |
| Dec 28 | 36°F | 12°F | 54°F 1980 | -19°F 2009 | 8% | |
| Dec 29 | 36°F | 12°F | 57°F 2024 | -15°F 1988 | 8% | |
| Dec 30 | 36°F | 12°F | 55°F 1980 | -28°F 1990 | 8% | |
| Dec 31 | 36°F | 12°F | 58°F 1980 | -21°F 2015 | 8% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:27 AM, sunset 5:02 PM
- December 31
- sunrise 7:46 AM, sunset 5:12 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00425837 (Moroni), public domain. Records: NOAA GHCN-Daily, station USC00422578, 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.