December weather forecastLancaster Mill, SC
December
Weather in December
December, the first month of the winter in Lancaster Mill, is also a fresh month, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 39.7°F (4.3°C).Temperature
The onset of December brings a small shift in high-temperatures, falling from a moderate 60.4°F (15.8°C) in November to a cool 54.1°F (12.3°C). Lancaster Mill's December nights cool down to an average low-temperature of 39.7°F (4.3°C).Humidity
The months with the highest humidity in Lancaster Mill, South Carolina, are May and December, with an average relative humidity of 75%.Rainfall
In Lancaster Mill, South Carolina, in December, it is raining for 8.5 days, with typically 1.02" (26mm) of accumulated precipitation. In Lancaster Mill, during the entire year, the rain falls for 120.6 days and collects up to 11.97" (304mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
December has the shortest days of the year in Lancaster Mill, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 5:12 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:22 pm EST.
Sunshine
The month with the least sunshine in Lancaster Mill is December, with an average of 5.5h of sunshine.UV index
The average daily maximum UV index in December in Lancaster Mill is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: During December, 3 as the daily maximum UV index converts into the following advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lancaster Mill, SC
- Average high temperature in December: 54.1°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in December: 39.7°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in December
Lancaster Mill, SC
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Lancaster Mill, SC
- Average wind speed in December: 6.9mph
The windiest months (with the highest average wind speed) are February and April (8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Lancaster Mill, SC
- Average humidity in December: 75%
The months with the highest relative humidity are May and December (75%).
The months with the lowest relative humidity are June, July and November (71%).
Average rainfall in December
Lancaster Mill, SC
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days in December
Lancaster Mill, SC
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (5.9 days).
Average snowfall in December
Lancaster Mill, SC
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Lancaster Mill, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Lancaster Mill, SC
- Average daylight in December: 9h and 54min
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 30min
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 30min).
Average sunshine days in December
Lancaster Mill, SC
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in December
Lancaster Mill, 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
Lancaster Mill, SC
- Average cloud cover in December: 41
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Lancaster Mill, 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).
