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
The onset of December brings a small shift in high-temperatures, falling from 63.5°F (17.5°C) in November to a still refreshing 57.7°F (14.3°C). Throughout the month of December, Barnwell sees a steady low-temperature average of 43.7°F (6.5°C).Humidity
The most humid month in Barnwell is December, with an average relative humidity of 76%.Rainfall
The month with the most rainfall is December, when the rain falls for 10.8 days and typically aggregates up to 3.39" (86mm) of precipitation.Snowfall
January, February and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Barnwell, during the entire year, snow falls for 0.9 days and aggregates up to 0.31" (8mm) of snow.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 7:11 am and sunset at 5:18 pm. On the last day of December, sunrise is at 7:28 am and sunset at 5:28 pm EST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year in Barnwell.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Consider this! The reflection from 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
What are the temperatures in Barnwell in December?
What is the most humid month?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
When does it start to snow?
What is the month with the shortest days?
How many hours of daylight does Barnwell have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Barnwell have in December?
When is the lowest UV index?
What is the UV index reading in December in Barnwell?
Average temperature in December
Barnwell, SC
- Average high temperature in December: 57.7°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in December: 43.7°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.4°F).
Average pressure in December
Barnwell, SC
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Barnwell, SC
- Average wind speed in December: 7.2mph
The windiest months (with the highest average wind speed) are March and April (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Barnwell, SC
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is January (70%).
Average rainfall in December
Barnwell, SC
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in December
Barnwell, SC
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in December
Barnwell, SC
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Barnwell, SC
- Average snowfall days in December: 0.2 days
The months with the highest number of snowfall days are January and February (0.3 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
Barnwell, 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 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Barnwell, SC
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (9 days).
Average UV index in December
Barnwell, SC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Barnwell, SC
- Average cloud cover in December: 41
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in December
Barnwell, 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).
Barnwell, South Carolina, USA
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