Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In Williamston, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's refreshing 60.3°F (15.7°C) to a fresh 53.2°F (11.8°C). Throughout the month of December, Williamston witnesses an average temperature of 38.5°F (3.6°C).Humidity
December is the most humid month, with an average relative humidity of 77%.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 4.02" (102mm) of precipitation is accumulated. Throughout the year, there are 158.8 rainfall days, and 38.35" (974mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Williamston, during December, snow falls for 0.5 days and regularly aggregates up to 0.31" (8mm) of snow. Throughout the year, in Williamston, there are 3.5 snowfall days, and 2.68" (68mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:19 am and sunset at 5:19 pm. On the last day of December, in Williamston, sunrise is at 7:36 am and sunset at 5:29 pm EST.
Sunshine
The month with the least sunshine in Williamston is December, with an average of 5.1h of sunshine.UV index
In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In December, a daily UV index of 3 turns into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. To avoid the Sun's strongest rays, limit exposure around the mid-day period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What are December temperatures in Williamston?
What is the most humid month in Williamston?
What is the average humidity in December in Williamston?
How much does it rain in Williamston in December?
How much does it snow in Williamston in December?
What is the month with the shortest days in Williamston?
How many hours of daylight does Williamston have in December?
What time are sunrise and sunset in December in Williamston?
What is the month with the least sunshine in Williamston?
How many hours of sunshine does Williamston have in December?
What is the UV index reading in December in Williamston?
Average temperature in December
Williamston, SC
- Average high temperature in December: 53.2°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (50°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in December
Williamston, 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 (29.98"Hg).
Average wind speed in December
Williamston, SC
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Williamston, SC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Williamston, SC
- Average rainfall in December: 4.02"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Williamston, SC
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is October (8.5 days).
Average snowfall in December
Williamston, SC
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Williamston, SC
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.3 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
Williamston, SC
- Average daylight in December: 9h and 5min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Williamston, SC
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
Williamston, SC
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Williamston, SC
- Average cloud cover in December: 45
The months with the most cloud cover are February and December (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Williamston, SC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Williamston, South Carolina, USA
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