December weather forecastGreenville, SC
December
Weather in December
December brings with it a palpable winter chill. The cold days and even colder nights, reaching 38.5°F (3.6°C), confirm winter's arrival in South Carolina. The sharp contrast in temperature between November and December marks the arrival of the coldest month. Rains batter the Greenville skyline often with the occasional snowfall being recorded. Therefore, winter gear is essential for all those venturing outdoors during December in Greenville.Temperature
The arrival of December in Greenville correlates with a minor temperature reduction, down from November's refreshing 59.9°F (15.5°C) to a cool 52.7°F (11.5°C). In the month of December, the average low-temperature in Greenville, South Carolina, usually rests at a cold 38.5°F (3.6°C).Humidity
The most humid month is December, with an average relative humidity of 76%.Rainfall
December is the month with the most rainfall. Rain falls for 11.7 days and accumulates 4.06" (103mm) of precipitation.Snowfall
Months with snowfall in Greenville are January through March, November and December. December is the month with the most snowfall. Snow falls for 0.5 days and accumulates 1.57" (40mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:19 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:28 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.5h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Greenville, South Carolina. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenville, SC
- Average high temperature in December: 52.7°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in December
Greenville, SC
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Greenville, SC
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Greenville, SC
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Greenville, SC
- Average rainfall in December: 4.06"
The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Greenville, SC
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is October (9.4 days).
Average snowfall in December
Greenville, SC
- Average snowfall in December: 1.57"
The month with the highest snowfall is December (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Greenville, SC
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Greenville, SC
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Greenville, SC
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in December
Greenville, SC
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Greenville, SC
- Average cloud cover in December: 41
The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in December
Greenville, SC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
