December weather forecastChesterfield, SC
December
Weather in December
December, the first month of the winter in Chesterfield, is also a fresh month, with an average temperature varying between 54.3°F (12.4°C) and 40.1°F (4.5°C).Temperature
December's onset introduces a mild reduction in the average high-temperature, from an enjoyable 60.8°F (16°C) in November to a fresh 54.3°F (12.4°C). Throughout December, an average low-temperature of 40.1°F (4.5°C) is experienced.Humidity
May, September and December, with an average relative humidity of 75%, are the most humid months.Rainfall
In Chesterfield, in December, it is raining for 10.8 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 149.5 rainfall days, and 28.23" (717mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Chesterfield, in December, during 0.1 snowfall days, 0.16" (4mm) of snow is typically accumulated. In Chesterfield, during the entire year, snow falls for 1.9 days and aggregates up to 1.69" (43mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of December in Chesterfield, sunrise is at 7:09 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:19 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.5h of sunshine.UV index
In Chesterfield, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 3 during December leads to these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Chesterfield, SC
- Average high temperature in December: 54.3°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 (50.5°F).
- Average low temperature in December: 40.1°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in December
Chesterfield, 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
Chesterfield, SC
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Chesterfield, SC
- Average humidity in December: 75%
The months with the highest relative humidity are May, September and December (75%).
The months with the lowest relative humidity are January, July and November (71%).
Average rainfall in December
Chesterfield, SC
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is August (2.91").
The driest months (with the least rainfall) are January and October (1.77").
Average rainfall days in December
Chesterfield, SC
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is October (8.2 days).
Average snowfall in December
Chesterfield, SC
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Chesterfield, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.8 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
Chesterfield, 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: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Chesterfield, SC
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Chesterfield, 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
Chesterfield, SC
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Chesterfield, 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).
