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 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
With the onset of December, the average high-temperature subtly recedes from November's refreshing 65.8°F (18.8°C) to a moderate 60.4°F (15.8°C). During December, the average low-temperature is a chilly 47.3°F (8.5°C).Humidity
The most humid month is December, with an average relative humidity of 77%.Rainfall
In Sandy, in December, it is raining for 9.5 days, with typically 2.4" (61mm) of accumulated precipitation. In Sandy, during the entire year, the rain falls for 154.4 days and collects up to 23.43" (595mm) of precipitation.Snowfall
January, February and December are months with snowfall. December has the most snowfall days of the year. Snow falls for 0.3 days.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December in Sandy, sunrise is at 7:05 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:24 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.6h of sunshine.UV index
In Sandy, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in December interprets into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What are December temperatures in Sandy?
What is the most humid month in Sandy?
What is the average humidity in December in Sandy?
How much does it rain in Sandy in December?
When does it snow the most in Sandy?
When does it start snowing in Sandy?
What is the month with the shortest days in Sandy?
What is the average length of the day in December in Sandy?
When are sunrise and sunset in December in Sandy?
What is the month with the least sunshine in Sandy?
How many hours of sunshine does Sandy have in December?
What is the UV index intensity in December in Sandy?
Average temperature in December
Sandy, SC
- Average high temperature in December: 60.4°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in December: 47.3°F
The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).
Average pressure in December
Sandy, 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 (29.98"Hg).
Average wind speed in December
Sandy, SC
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Sandy, SC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Sandy, SC
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Sandy, SC
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.9 days).
Average snowfall days in December
Sandy, SC
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is December (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
Sandy, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in December
Sandy, SC
- Average sunshine days in December: 19 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (6.1 days).
Average UV index in December
Sandy, SC
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in December
Sandy, SC
- Average cloud cover in December: 40
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in December
Sandy, 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).
Sandy, South Carolina, USA
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