December weather forecastCharleston, MS
December
Weather in December
December, the first month of the winter in Charleston, is also a fresh month, with an average temperature fluctuating between 53.2°F (11.8°C) and 39.7°F (4.3°C).Temperature
In Charleston, the average high-temperature in December gently drops from an enjoyable 61.3°F (16.3°C) in November to a cool 53.2°F (11.8°C). Throughout the nights in December, Charleston experiences an average low-temperature of 39.7°F (4.3°C).Humidity
The months with the highest humidity in Charleston, Mississippi, are February, March and December, with an average relative humidity of 79%.Rainfall
In Charleston, during December, the rain falls for 8.5 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 113.7 rainfall days, and 13.27" (337mm) of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall in Charleston, Mississippi. In Charleston, in December, snow falls for 0.4 days, with typically accumulated 0.08" (2mm) of snow. Throughout the year, in Charleston, there are 2.5 snowfall days, and 0.35" (9mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:48 am and sunset at 4:51 pm. On the last day of December, in Charleston, Mississippi, sunrise is at 7:05 am and sunset at 5:01 pm CST.
Sunshine
In Charleston, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Charleston are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 3 in December leads to these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Charleston, MS
- Average high temperature in December: 53.2°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (50°F).
- Average low temperature in December: 39.7°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in December
Charleston, MS
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Charleston, MS
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Charleston, MS
- Average humidity in December: 79%
The months with the highest relative humidity are February, March and December (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Charleston, MS
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is July (1.57").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in December
Charleston, MS
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (5.3 days).
Average snowfall in December
Charleston, MS
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Charleston, MS
- Average snowfall days in December: 0.4 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 and September (0 days).
Average daylight in December /
Average sunshine in December
Charleston, MS
- 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: 4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Charleston, MS
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in December
Charleston, MS
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Charleston, MS
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in December
Charleston, MS
- 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).
