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
December's weather records an average high-temperature of a moderate 60.6°F (15.9°C), showing little deviation from November. An average temperature of 50°F (10°C) is recorded during the nights in December.Humidity
December is the most humid month, with an average relative humidity of 78%.Rainfall
In December, the rain falls for 10.5 days. Throughout December, 4.25" (108mm) of precipitation is accumulated. In Mount Pleasant, during the entire year, the rain falls for 182.9 days and collects up to 44.69" (1135mm) of precipitation.Snowfall
January, February and December are months with snowfall. The month with the most snowfall in Mount Pleasant, South Carolina, is December, when 0.31" (8mm) of snow is typically aggregated.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 5:12 pm. On the last day of December, in Mount Pleasant, sunrise is at 7:21 am and sunset at 5:23 pm EST.
Sunshine
December has the least sunshine of the year in Mount Pleasant, with an average of 5.7h of sunshine.UV index
In Mount Pleasant, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 during December translates into the following guidance:
Put precautions into practice - Ensuring skin and eye safety is a necessity. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Mount Pleasant in December?
What is the most humid month in Mount Pleasant?
What is the average humidity in December in Mount Pleasant?
How much does it rain in Mount Pleasant in December?
What is the snowiest month in Mount Pleasant?
When does it start to snow in Mount Pleasant?
What is the month with the shortest days in Mount Pleasant?
What is the average length of the day in December in Mount Pleasant?
When are sunrise and sunset in December in Mount Pleasant?
What is the month with the least sunshine in Mount Pleasant?
How many hours of sunshine does Mount Pleasant have in December?
What is the UV index intensity in December in Mount Pleasant?
Average temperature in December
Mount Pleasant, SC
- Average high temperature in December: 60.6°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (57.2°F).
- Average low temperature in December: 50°F
The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in December
Mount Pleasant, SC
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Mount Pleasant, SC
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in December
Mount Pleasant, SC
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).
Average rainfall in December
Mount Pleasant, SC
- Average rainfall in December: 4.25"
The wettest month (with the highest rainfall) is August (8.03").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in December
Mount Pleasant, SC
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is August (25.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in December
Mount Pleasant, SC
- Average snowfall in December: 0.3"
The month with the highest snowfall is December (0.3").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Mount Pleasant, SC
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Mount Pleasant, 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 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Mount Pleasant, SC
- Average sunshine days in December: 18.2 days
The months with the most sunshine days are January and November (19.3 days).
The month with the least sunshine days is August (3 days).
Average UV index in December
Mount Pleasant, SC
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in December
Mount Pleasant, SC
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in December
Mount Pleasant, 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).
Mount Pleasant, South Carolina, USA
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