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
As December begins, there is a minor decrease in the average high-temperature, softly falling from an enjoyable 61.7°F (16.5°C) in November to a mild 55.6°F (13.1°C). Nighttime temperatures in December average to a wintry 41.7°F (5.4°C) in Sunnyhill.Humidity
In Sunnyhill, South Carolina, the average relative humidity in December is 74%.Rainfall
In Sunnyhill, in December, during 8 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 116.1 rainfall days, and 11.42" (290mm) of precipitation is accumulated.Snowfall
In Sunnyhill, snow does not fall in March through December.Daylight
December has the shortest days of the year in Sunnyhill, South Carolina, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 5:12 pm. On the last day of December, sunrise is at 7:28 am and sunset at 5:23 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.6h of sunshine.UV index
The average daily maximum UV index in December in Sunnyhill is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In December, a regular UV index of 3 translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Sunnyhill?
What is the average humidity in December in Sunnyhill?
How many days does it rain in December in Sunnyhill?
When it does not snow in Sunnyhill?
Does it snow in Sunnyhill in December?
What is the month with the shortest days in Sunnyhill?
How many hours of daylight does Sunnyhill have in December?
When is the sunrise / sunset in December in Sunnyhill?
What are the months with the least sunshine in Sunnyhill?
How long on average sun shines in December in Sunnyhill?
How high is the UV index in December in Sunnyhill?
Average temperature in December
Sunnyhill, SC
- Average high temperature in December: 55.6°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 (52.2°F).
- Average low temperature in December: 41.7°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure in December
Sunnyhill, 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
Sunnyhill, SC
- Average wind speed in December: 7.2mph
The windiest months (with the highest average wind speed) are February and April (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Sunnyhill, SC
- Average humidity in December: 74%
The month with the highest relative humidity is May (75%).
The months with the lowest relative humidity are January, March and November (70%).
Average rainfall in December
Sunnyhill, SC
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.59").
Average rainfall days in December
Sunnyhill, SC
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is November (5.8 days).
Average snowfall in December
Sunnyhill, SC
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Sunnyhill, SC
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
Sunnyhill, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in December
Sunnyhill, SC
- Average sunshine days in December: 21.2 days
The month with the most sunshine days is October (23.9 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in December
Sunnyhill, SC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Sunnyhill, SC
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 28).
Average visibility in December
Sunnyhill, 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).
Sunnyhill, South Carolina, USA
Weather forecast for your location
2. Allow the app to use your location