Greenville Weather in December

NASA POWER reanalysis for the half-degree grid cell around Greenville, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 29°C on December 1 to 30°C on December 31, and lows from 24°C to 24°C. Normal precipitation for the month is 78 mm over about 16 wet days.

December day by day

The normal high and low for each date, in °C.

Normal low
Normal high
Reanalysis extreme high
Reanalysis extreme low

December at a glance

Average high: 29°C
Average low: 24°C
Precipitation: 78 mm
Reanalysis high: 34°CDec 26, 2002
Reanalysis low: 20°CDec 29, 2015
Daylight: 11 h 51 min to 11 h 50 min
Cloud cover: 55%
Humidity: 82%
Dew point: 23°C
Wind: 9.0 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

Date	Normal high	Normal low	Reanalysis high	Reanalysis low	Chance wet
Dec 1	29°C	24°C	30°C 2006	23°C 1992	61%
Dec 2	29°C	24°C	30°C 2002	23°C 1992	60%
Dec 3	29°C	24°C	30°C 2005	23°C 1992	58%
Dec 4	29°C	24°C	30°C 1997	24°C 1992	58%
Dec 5	29°C	24°C	31°C 2006	23°C 2007	58%
Dec 6	29°C	24°C	30°C 2006	21°C 2008	58%
Dec 7	29°C	24°C	31°C 2006	23°C 2008	59%
Dec 8	29°C	24°C	31°C 2001	21°C 2013	58%
Dec 9	29°C	24°C	30°C 2006	21°C 2013	59%
Dec 10	29°C	24°C	31°C 2002	23°C 1994	57%
Dec 11	29°C	24°C	30°C 1991	23°C 1994	55%
Dec 12	29°C	24°C	33°C 2002	22°C 2001	53%
Dec 13	29°C	24°C	32°C 2002	22°C 2014	51%
Dec 14	29°C	24°C	33°C 2002	21°C 2014	49%
Dec 15	29°C	24°C	34°C 2002	22°C 2000	49%
Dec 16	29°C	24°C	31°C 2002	22°C 2015	49%
Dec 17	29°C	24°C	33°C 2002	20°C 2015	48%
Dec 18	29°C	24°C	32°C 2002	23°C 2015	48%
Dec 19	29°C	24°C	33°C 2002	21°C 2015	47%
Dec 20	29°C	24°C	31°C 2005	22°C 2015	44%
Dec 21	29°C	24°C	32°C 2007	22°C 2015	42%
Dec 22	29°C	24°C	32°C 2007	22°C 1999	40%
Dec 23	29°C	24°C	33°C 2002	22°C 2017	38%
Dec 24	30°C	24°C	33°C 2002	22°C 2017	36%
Dec 25	30°C	24°C	34°C 2002	22°C 2017	35%
Dec 26	30°C	24°C	34°C 2002	22°C 2015	35%
Dec 27	30°C	24°C	33°C 2002	21°C 2014	35%
Dec 28	30°C	24°C	34°C 2002	20°C 2015	34%
Dec 29	30°C	24°C	33°C 2002	20°C 2015	34%
Dec 30	30°C	24°C	34°C 2002	22°C 2015	32%
Dec 31	30°C	24°C	33°C 2002	21°C 2012	31%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT).

December 1: sunrise 6:30 AM, sunset 6:21 PM
December 31: sunrise 6:44 AM, sunset 6:34 PM

Every day of December: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: 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.