December weather forecastGraniteville, SC
December
Weather in December
The first month of the winter, December, is still a refreshing month in Graniteville, South Carolina, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 43°F (6.1°C).Temperature
December ushers in a minute temperature change, with average high-temperatures reducing from November's comfortable 63°F (17.2°C) to a still refreshing 57°F (13.9°C). An average low-temperature of 43°F (6.1°C) marks the month of December in Graniteville.Humidity
With an average relative humidity of 75%, December is the most humid month in Graniteville, South Carolina.Rainfall
The month with the most rainfall is December, when the rain falls for 10.5 days and typically aggregates up to 2.99" (76mm) of precipitation.Snowfall
Months with snowfall in Graniteville are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 1 snowfall days, and 0.55" (14mm) of snow is accumulated.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:13 am and sunset at 5:19 pm. On the last day of December, in Graniteville, South Carolina, sunrise is at 7:31 am and sunset at 5:29 pm EST.
Sunshine
The month with the least sunshine in Graniteville is December, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 3 in December leads to these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Graniteville, SC
- Average high temperature in December: 57°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (53.8°F).
- Average low temperature in December: 43°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in December
Graniteville, SC
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Graniteville, SC
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are February, March and April (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Graniteville, SC
- Average humidity in December: 75%
The month with the highest relative humidity is December (75%).
The months with the lowest relative humidity are July and November (69%).
Average rainfall in December
Graniteville, SC
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is December (2.99").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in December
Graniteville, SC
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in December
Graniteville, SC
- Average snowfall in December: 0.04"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Graniteville, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Graniteville, SC
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Graniteville, SC
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in December
Graniteville, SC
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Graniteville, SC
- Average cloud cover in December: 42
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in December
Graniteville, 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).
