December weather forecastCainhoy, SC
December
Weather in December
December wraps up the year in Cainhoy, South Carolina by welcoming the full swing of winter. It records the lowest temperatures compared to the previous months and sees the first signs of snowfall at 0.5" (13mm). December also experiences reduced daylight hours and sees a decrease in rainfall. Winds maintain the trends of the preceding months. Despite the cold and damp, the city prepares to ring in the New Year with a cozy winter chill.Temperature
The commencement of December records an average high-temperature of a still refreshing 60.6°F (15.9°C), barely varying from November's 65.7°F (18.7°C). Cainhoy's average low-temperature in December is measured at a cool 50°F (10°C).Humidity
With an average relative humidity of 78%, December is the most humid month.Rainfall
In Cainhoy, during December, the rain falls for 10.5 days and regularly aggregates up to 4.25" (108mm) of precipitation. In Cainhoy, during the entire year, the rain falls for 182.9 days and collects up to 44.69" (1135mm) of precipitation.Snowfall
February and December are months with snowfall. The month with the most snowfall is December, when 0.51" (13mm) of snow is typically aggregated.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 7:04 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:23 pm EST.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 in December translates into these instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cainhoy, SC
- Average high temperature in December: 60.6°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (57.2°F).
- Average low temperature in December: 50°F
The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in December
Cainhoy, SC
- Average pressure in December: 30.12"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
Cainhoy, SC
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in December
Cainhoy, SC
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).
Average rainfall in December
Cainhoy, SC
- Average rainfall in December: 4.25"
The wettest month (with the highest rainfall) is August (8.03").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in December
Cainhoy, SC
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is August (25.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in December
Cainhoy, SC
- Average snowfall in December: 0.5"
The month with the highest snowfall is December (0.5").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Cainhoy, SC
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Cainhoy, 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 42min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Cainhoy, SC
- Average sunshine days in December: 18.2 days
The months with the most sunshine days are January and November (19.3 days).
The month with the least sunshine days is August (3 days).
Average UV index in December
Cainhoy, 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
Cainhoy, SC
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility in December
Cainhoy, 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).
