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
A moderate decline in the average high-temperature is seen during December, decreasing from a chilly 48.4°F (9.1°C) in November to a wintry 37.4°F (3°C). In December, Atlanta encounters an average low-temperature of 27.5°F (-2.5°C) during the night.Humidity
The months with the highest humidity are January and December, with an average relative humidity of 83%.Rainfall
In December, the rain falls for 9.3 days. Throughout December, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 164 rainfall days, and 32.72" (831mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Atlanta, during December, snow falls for 7.6 days and regularly aggregates up to 2.64" (67mm) of snow. Throughout the year, there are 37 snowfall days, and 13.43" (341mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:47 am and sunset at 5:18 pm. On the last day of December, sunrise is at 8:06 am and sunset at 5:28 pm EST.
Sunshine
In December, the average sunshine is 4.1h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Atlanta. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. 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
How cold is December?
What are the most humid months in Atlanta?
What is the average humidity in December in Atlanta?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Atlanta?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Atlanta, IN
- Average high temperature in December: 37.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Atlanta, IN
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Atlanta, IN
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Atlanta, IN
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Atlanta, IN
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Atlanta, IN
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Atlanta, IN
- Average snowfall in December: 2.64"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Atlanta, IN
- Average snowfall days in December: 7.6 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Atlanta, IN
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Atlanta, IN
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is May (8.3 days).
Average UV index in December
Atlanta, IN
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Atlanta, IN
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Atlanta, IN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Atlanta, Indiana, USA
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