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 onset corresponds with a subtle shift in the average high-temperature, slightly moving from an enjoyable 62.6°F (17°C) in November to a mild 56.5°F (13.6°C). The average nighttime temperature lowers to an icy 42.1°F (5.6°C) throughout December.Humidity
December is the most humid month, with an average relative humidity of 74%.Rainfall
December is the month with the most rainfall. Rain falls for 10.8 days and accumulates 2.91" (74mm) of precipitation.Snowfall
January, February and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 0.7 snowfall days, and 0.63" (16mm) of snow is accumulated.Daylight
With an average of 9h and 54min 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 5:14 pm. On the last day of December, sunrise is at 7:29 am and sunset at 5:25 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.3h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 3 during December leads to these advisories:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
When does it start snowing?
What is the month with the shortest days in State Park?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine in State Park?
How many hours of sunshine does State Park have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
State Park, SC
- Average high temperature in December: 56.5°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 (52.9°F).
- Average low temperature in December: 42.1°F
The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in December
State Park, 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
State Park, SC
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
State Park, SC
- Average humidity in December: 74%
The month with the highest relative humidity is December (74%).
The months with the lowest relative humidity are January, July and November (69%).
Average rainfall in December
State Park, SC
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
State Park, SC
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is October (7.3 days).
Average snowfall in December
State Park, SC
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
State Park, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is 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
State Park, 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 2min
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
State Park, SC
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is October (22.7 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in December
State Park, SC
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
State Park, SC
- Average cloud cover in December: 42
The months with the most cloud cover are February and December (Cloud cover 42).
The months with the least cloud cover are June and October (Cloud cover 29).
Average visibility in December
State Park, 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).
State Park, South Carolina, USA
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