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 transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderate 59.9°F (15.5°C) in November to a cool 52.9°F (11.6°C). December brings with it a nighttime average temperature of 38.5°F (3.6°C).Humidity
The months with the highest humidity are May and December, with an average relative humidity of 75%.Rainfall
December is the month with the most rainfall. Rain falls for 11.5 days and accumulates 3.54" (90mm) of precipitation.Snowfall
Months with snowfall are January through March and December. December is the month with the most snowfall. Snow falls for 0.6 days and accumulates 1.65" (42mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 7:15 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:23 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 and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What are the most humid months?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
What is the snowiest month?
When does it start snowing?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does York have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
York, SC
- Average high temperature in December: 52.9°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 (49.5°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in December
York, 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
York, SC
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
York, SC
- Average humidity in December: 75%
The months with the highest relative humidity are May and December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
York, SC
- Average rainfall in December: 3.54"
The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
York, SC
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in December
York, SC
- Average snowfall in December: 1.65"
The month with the highest snowfall is December (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
York, SC
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1.8 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
York, SC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
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
York, SC
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (11.2 days).
Average UV index in December
York, 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
York, 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
York, 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).
York, South Carolina, USA
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