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
The arrival of December suggests a slight decrease in the average high-temperature, moving from a mild 60.4°F (15.8°C) in November to a cool 54.5°F (12.5°C). Throughout the nights in December, Chester experiences an average low-temperature of 39.7°F (4.3°C).Humidity
December is the most humid month, with an average relative humidity of 76%.Rainfall
In Chester, in December, during 10.9 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. In Chester, during the entire year, the rain falls for 157.1 days and collects up to 31.06" (789mm) of precipitation.Snowfall
Months with snowfall are January through March and December. The month with the most snowfall is December, when snow falls for 0.3 days and typically aggregates up to 0.67" (17mm) 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 Chester, sunrise is at 7:14 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:24 pm EST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year in Chester.UV index
In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 3 in December transforms into the following instructions:
Adopt protective measures - It is advised to guard against sun damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month in Chester?
What is the average humidity in December?
How many days does it rain in December?
When does it snow the most?
When does it start to snow?
What is the month with the shortest days in Chester?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Chester, SC
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in December: 39.7°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).
Average pressure in December
Chester, 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 (29.98"Hg).
Average wind speed in December
Chester, SC
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Chester, SC
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in December
Chester, SC
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is August (3.35").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Chester, SC
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is October (8.8 days).
Average snowfall in December
Chester, SC
- Average snowfall in December: 0.67"
The month with the highest snowfall is December (0.67").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Chester, SC
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.9 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
Chester, 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 3min
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
Chester, SC
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in December
Chester, 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
Chester, SC
- Average cloud cover in December: 42
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Chester, 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).
Chester, South Carolina, USA
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