December weather forecastSmyrna, GA
December
Weather in December
Smyrna experiences a distinct winter chill during December, concluding the year with the lowest average temperatures of 53.6°F (12°C) high and 39°F (3.9°C) low. Snowfall reappears after a long spell of absence, hinting at a white Christmas possibility. Compared to November, December is decidedly colder, further shrunk daylight hours, signaling the peak of winter. Despite the cold, the festive season adds a warming charm to this month. Bundle up as the weather will be colder than any other all year.Temperature
December is characterized by a mild reduction in the average high-temperature, from a refreshing 61°F (16.1°C) in November to a fresh 53.6°F (12°C). December nights experience a consistent temperature drop to a cold 39°F (3.9°C).Humidity
December is the most humid month, with an average relative humidity of 78%.Rainfall
In Smyrna, in December, it is raining for 13.7 days, with typically 3.78" (96mm) of accumulated precipitation. Throughout the year, there are 177.1 rainfall days, and 41.93" (1065mm) of precipitation is accumulated.Snowfall
Months with snowfall in Smyrna are January through March and December. December is the first month it typically snows in Smyrna, Georgia. Throughout December, in the average 0.8 snowfall days, it receives 0.67" (17mm) of snow. Throughout the year, in Smyrna, there are 4.5 snowfall days, and 2.6" (66mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 5:29 pm. On the last day of December, sunrise is at 7:43 am and sunset at 5:39 pm EST.
Sunshine
December has the least sunshine of the year in Smyrna, with an average of 5h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Smyrna. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Smyrna, GA
- Average high temperature in December: 53.6°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 39°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).
Average pressure in December
Smyrna, GA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Smyrna, GA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Smyrna, GA
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is August (68%).
Average rainfall in December
Smyrna, GA
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is August (4.88").
The driest month (with the least rainfall) is October (2.24").
Average rainfall days in December
Smyrna, GA
- Average rainfall days in December: 13.7 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in December
Smyrna, GA
- Average snowfall in December: 0.67"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Smyrna, GA
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is January (1.6 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
Smyrna, GA
- 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Smyrna, GA
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in December
Smyrna, GA
- Average UV index in December: 3
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, February, November and December (UV index 3).
Average cloud cover in December
Smyrna, GA
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Smyrna, GA
- 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).
