December weather forecastVermillion, SC
December
Weather in December
December, the first month of the winter in Vermillion, is still a cool month, with an average temperature varying between 38.8°F (3.8°C) and 53.8°F (12.1°C).Temperature
The shift from November to December includes a small decrease in the average high-temperature, from a moderate 60.4°F (15.8°C) to a cool 53.8°F (12.1°C). An average low-temperature of 38.8°F (3.8°C) is noted during the nights in December.Humidity
The most humid month is December, with an average relative humidity of 77%.Rainfall
The month with the most rainfall is December, when the rain falls for 11.9 days and typically aggregates up to 4.09" (104mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. The month with the most snowfall in Vermillion is December, when snow falls for 0.5 days and typically aggregates up to 1.14" (29mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:18 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:29 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.2h 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 low health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Vermillion, SC
- Average high temperature in December: 53.8°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in December: 38.8°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in December
Vermillion, 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
Vermillion, SC
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Vermillion, SC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Vermillion, SC
- Average rainfall in December: 4.09"
The wettest month (with the highest rainfall) is December (4.09").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Vermillion, SC
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is October (8.8 days).
Average snowfall in December
Vermillion, SC
- Average snowfall in December: 1.14"
The month with the highest snowfall is December (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Vermillion, SC
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is January (1.3 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
Vermillion, SC
- Average daylight in December: 9h and 54min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Vermillion, SC
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Vermillion, SC
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Vermillion, SC
- Average cloud cover in December: 45
The month with the most cloud cover is December (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 30).
Average visibility in December
Vermillion, SC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
