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
As November transitions into December, Charleston sees a drop in the average high-temperature, transitioning from a refreshing 55.6°F (13.1°C) to a frosty 46.2°F (7.9°C). An average minimum temperature of 34°F (1.1°C) marks the month of December in Charleston.Humidity
In Charleston, the average relative humidity in December is 77%.Rainfall
In Charleston, during December, the rain falls for 10.1 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Charleston, during the entire year, the rain falls for 153 days and collects up to 33.9" (861mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Charleston. In December, it is snowing for 1.5 days. Throughout December, 0.47" (12mm) of snow is accumulated. Throughout the year, there are 11.2 snowfall days, and 4.69" (119mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Charleston.On the first day of the month, sunrise is at 6:52 am and sunset at 4:40 pm. On the last day of December, in Charleston, sunrise is at 7:10 am and sunset at 4:51 pm CST.
Sunshine
In Charleston, the average sunshine in December is 5h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Charleston in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Charleston?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Charleston have in December?
What is the month with the lowest UV index?
How high is the UV index in December in Charleston?
Average temperature in December
Charleston, MO
- Average high temperature in December: 46.2°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in December: 34°F
The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Charleston, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Charleston, MO
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are January, February and March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Charleston, MO
- Average humidity in December: 77%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Charleston, MO
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in December
Charleston, MO
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Charleston, MO
- Average snowfall in December: 0.47"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Charleston, MO
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Charleston, MO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Charleston, MO
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in December
Charleston, MO
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Charleston, MO
- Average cloud cover in December: 46
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in December
Charleston, MO
- 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).
Charleston, Missouri, USA
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