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
During the shift to December, Holly Hill records a mild decrease in average high-temperature, moving 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 nights cool down to an average of 42.8°F (6°C).Humidity
The months with the highest humidity in Holly Hill are May, August, September and December, with an average relative humidity of 77%.Rainfall
In Holly Hill, in December, it is raining for 10.7 days, with typically 3.46" (88mm) of accumulated precipitation. Throughout the year, there are 165.1 rainfall days, and 33.46" (850mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
December has the shortest days of the year in Holly Hill, with an average of 10h and 0min of daylight.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
The month with the least sunshine is December, with an average of 5.5h of sunshine.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 moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What is the average December temperature in Holly Hill?
What is the most humid month in Holly Hill?
What is the average humidity in December in Holly Hill?
How many days does it rain in December in Holly Hill?
When it does not snow in Holly Hill?
Does it snow in Holly Hill in December?
What is the month with the shortest days in Holly Hill?
What is the average length of the day in December in Holly Hill?
What time are sunrise and sunset in December in Holly Hill?
What is the month with the least sunshine in Holly Hill?
How long on average sun shines in December in Holly Hill?
What are the months with the lowest UV index in Holly Hill?
How high is the UV index in December in Holly Hill?
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 3min
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).
Holly Hill, South Carolina, USA
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