December weather forecastWinnsboro, SC
December
Weather in December
The first month of the winter, December, is still a cool month in Winnsboro, South Carolina, with an average temperature varying between 54.9°F (12.7°C) and 40.6°F (4.8°C).Temperature
The onset of December results in a small decrease in the average high-temperature, moderately receding from an enjoyable 61.7°F (16.5°C) in November to a cool 54.9°F (12.7°C). Throughout the nights in December, Winnsboro experiences an average low-temperature of 40.6°F (4.8°C).Humidity
The months with the highest humidity are May and December, with an average relative humidity of 75%.Rainfall
The month with the most rainfall is December, when the rain falls for 12 days and typically aggregates up to 3.5" (89mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Winnsboro, in December, snow falls for 0.2 days, with typically accumulated 0.08" (2mm) of snow. Throughout the year, there are 2.5 snowfall days, and 1.34" (34mm) of snow is accumulated.Daylight
The month with the shortest days in Winnsboro is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 5:14 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:24 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.4h of sunshine.UV index
In Winnsboro, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 3 in December leads to these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Winnsboro, SC
- Average high temperature in December: 54.9°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in December: 40.6°F
The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in December
Winnsboro, 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 (29.97"Hg).
Average wind speed in December
Winnsboro, SC
- Average wind speed in December: 7mph
The windiest months (with the highest average wind speed) are February and April (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Winnsboro, SC
- Average humidity in December: 75%
The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are June, July and November (71%).
Average rainfall in December
Winnsboro, SC
- Average rainfall in December: 3.5"
The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Winnsboro, SC
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is July (18 days).
The months with the least rainy days are October and November (9 days).
Average snowfall in December
Winnsboro, SC
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Winnsboro, SC
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (1.2 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
Winnsboro, SC
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- 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
Winnsboro, SC
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in December
Winnsboro, SC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Winnsboro, SC
- Average cloud cover in December: 42
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Winnsboro, 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).
