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 December, the average high-temperature marginally drops from a mild 59.9°F (15.5°C) in November to a cool 53.1°F (11.7°C). The average low-temperature, in Fort Mill, South Carolina, is 39°F (3.9°C).Humidity
The most humid month in Fort Mill, South Carolina, is December, with an average relative humidity of 75%.Rainfall
In Fort Mill, South Carolina, it is raining for 10 days, with typically 2.91" (74mm) of accumulated precipitation. In Fort Mill, during the entire year, the rain falls for 146.1 days and collects up to 28.94" (735mm) of precipitation.Snowfall
January through March and December are months with snowfall in Fort Mill. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 0.83" (21mm) of snow. Throughout the year, there are 3.1 snowfall days, and 3.58" (91mm) of snow is accumulated.Daylight
With an average of 9h and 51min of daylight, December has the shortest days of the year.On the first day of December in Fort Mill, sunrise is at 7:13 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:22 pm EST.
Sunshine
With an average of 5.3h of sunshine, December has the least sunshine of the year in Fort Mill.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 2 in December interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
FAQ
What is the temperature in December in Fort Mill?
What is the most humid month in Fort Mill?
What is the average humidity in December in Fort Mill?
How many days does it rain in December in Fort Mill?
When does it start snowing in Fort Mill?
What is the month with the shortest days in Fort Mill?
What is the average length of the day in December in Fort Mill?
When is the sunrise / sunset in December in Fort Mill?
What is the month with the least sunshine in Fort Mill?
How long on average sun shines in December in Fort Mill?
What is the month with the lowest UV index in Fort Mill?
How high is the UV index in December in Fort Mill?
Average temperature in December
Fort Mill, SC
- Average high temperature in December: 53.1°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 39°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in December
Fort Mill, 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
Fort Mill, SC
- Average wind speed in December: 6.8mph
The windiest months (with the highest average wind speed) are February and April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Fort Mill, SC
- Average humidity in December: 75%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Fort Mill, SC
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is August (3.23").
The driest months (with the least rainfall) are September and October (1.81").
Average rainfall days in December
Fort Mill, SC
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in December
Fort Mill, SC
- Average snowfall in December: 0.83"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Fort Mill, SC
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.4 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
Fort Mill, SC
- Average daylight in December: 9h and 51min
The month with the longest days is June (Average daylight: 14h and 28min).
The month with the shortest days is December (Average daylight: 9h and 51min).
- Average sunshine in December: 5h and 18min
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 18min).
Average sunshine days in December
Fort Mill, SC
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Fort Mill, SC
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Fort Mill, SC
- Average cloud cover in December: 44
The months with the most cloud cover are February and December (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Fort Mill, 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).
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