December weather forecastHolly Hill, SC
December
Weather in December
December, the first month of the winter in Holly Hill, is still a mild month, with an average temperature fluctuating between 58.1°F (14.5°C) and 42.8°F (6°C).Temperature
December's arrival subtly correlates with a reduction in the average high-temperature, down from an enjoyable 63.9°F (17.7°C) in November to a still refreshing 58.1°F (14.5°C). In Holly Hill, December's nights observe an average temperature dip to a chilly 42.8°F (6°C).Humidity
May, August, September and December, with an average relative humidity of 77%, are the most humid months in Holly Hill.Rainfall
In December, the rain falls for 10.7 days. Throughout December, 3.46" (88mm) of precipitation is accumulated. In Holly Hill, during the entire year, the rain falls for 165.1 days and collects up to 33.46" (850mm) of precipitation.Snowfall
In Holly Hill, snow does not fall in March through December.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:07 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:24 pm EST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Holly Hill. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Holly Hill, SC
- Average high temperature in December: 58.1°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (54.9°F).
- Average low temperature in December: 42.8°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in December
Holly Hill, SC
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Holly Hill, SC
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Holly Hill, SC
- Average humidity in December: 77%
The months with the highest relative humidity are May, August, September and December (77%).
The months with the lowest relative humidity are January and November (72%).
Average rainfall in December
Holly Hill, SC
- Average rainfall in December: 3.46"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in December
Holly Hill, SC
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is August (21 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in December
Holly Hill, SC
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Holly Hill, SC
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Holly Hill, 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 30min
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 30min).
Average sunshine days in December
Holly Hill, SC
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is August (7.9 days).
Average UV index in December
Holly Hill, 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
Holly Hill, SC
- Average cloud cover in December: 41
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in December
Holly Hill, 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).
