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
December's onset introduces a mild reduction in the average high-temperature, from a refreshing 61°F (16.1°C) in November to a cool 53.6°F (12°C). During December, Norcross's temperature falls to a steady low-temperature average of 39.2°F (4°C).Humidity
With an average relative humidity of 77%, December is the most humid month in Norcross.Rainfall
In Norcross, Georgia, in December, during 10.4 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Norcross, Georgia, during the entire year, the rain falls for 154.1 days and collects up to 23.74" (603mm) of precipitation.Snowfall
Months with snowfall in Norcross are January through March, November and December. In December, it is snowing for 0.3 days. Throughout December, 0.08" (2mm) of snow is accumulated. Throughout the year, there are 2.6 snowfall days, and 0.75" (19mm) of snow is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:24 am and sunset at 5:27 pm. On the last day of December, in Norcross, sunrise is at 7:41 am and sunset at 5:38 pm EST.
Sunshine
December has the least sunshine of the year in Norcross, with an average of 5h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Norcross. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 2 in December leads to these guidelines:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What are the temperatures in Norcross in December?
What is the most humid month in Norcross?
What is the average humidity in December in Norcross?
How much does it rain in Norcross in December?
How many days does it snow in December in Norcross?
What is the month with the shortest days in Norcross?
What is the average length of the day in December in Norcross?
What time are sunrise and sunset in December in Norcross?
What is the month with the least sunshine in Norcross?
How many hours of sunshine does Norcross have in December?
What is the month with the lowest UV index in Norcross?
How high is the UV index in December in Norcross?
Average temperature in December
Norcross, GA
- Average high temperature in December: 53.6°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 39.2°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in December
Norcross, 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
Norcross, GA
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Norcross, GA
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (68%).
Average rainfall in December
Norcross, GA
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is August (3.58").
The driest months (with the least rainfall) are January and October (1.34").
Average rainfall days in December
Norcross, GA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in December
Norcross, GA
- Average snowfall in December: 0.08"
The month with the highest snowfall is January (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Norcross, GA
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is January (1.1 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
Norcross, GA
- 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 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
Norcross, GA
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in December
Norcross, GA
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Norcross, GA
- Average cloud cover in December: 46
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Norcross, 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).
Norcross, Georgia, USA
Weather forecast for your location
2. Allow the app to use your location
