December weather forecastRoyston, GA

December

Weather in December

The first month of the winter, December, is still a cool month in Royston, Georgia, with an average temperature varying between 39.4°F (4.1°C) and 54.1°F (12.3°C).

Temperature

Royston in December undergoes a slight reduction in the average high-temperature, shifting from November's comfortable 61.2°F (16.2°C) to a fresh 54.1°F (12.3°C). In December, Royston experiences a temperature dip to an average of 39.4°F (4.1°C) at night.

Humidity

With an average relative humidity of 77%, December is the most humid month in Royston, Georgia.

Rainfall

December is the month with the most rainfall. Rain falls for 12.3 days and accumulates 3.98" (101mm) of precipitation.

Snowfall

Months with snowfall in Royston are January through March and December. The month with the most snowfall is December, when snow falls for 0.5 days and typically aggregates up to 1.38" (35mm) of snow.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:20 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:33 pm EST.

Sunshine

The month with the least sunshine is December, with an average of 5.3h of sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a regular UV index of 2 translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.

Updated: Jul 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Royston, in December, the average high-temperature is 54.1°F (12.3°C), and the average low-temperature is 39.4°F (4.1°C). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is estimated at 91.4°F (33°C).

With an average relative humidity of 77%, December is the most humid month.

In December, the average relative humidity is 77%.

December is the month with the most rainfall. Rain falls for 12.3 days and accumulates 3.98" (101mm) of precipitation.

In Royston, in December, during 12.3 rainfall days, 3.98" (101mm) of precipitation is typically accumulated.

The month with the most snowfall in Royston is December, when snow falls for 0.5 days and typically aggregates up to 1.38" (35mm) of snow.

December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 1.38" (35mm) of snow.

December has the shortest days of the year, with an average of 9h and 54min of daylight.

In December, the average day length is 9h and 55min.

In December, on the first day of the month, sunrise is at 7:20 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:33 pm EST.

The month with the least sunshine in Royston is December, with an average of 5.3h of sunshine.

The average sunshine duration in December is 5.3h.

January and December, with an average maximum UV index of 2, are months with the lowest UV index.

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

61.2°F

54.1°F

50.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.3mph

6.8mph

7.3mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

18.6

16.8

17.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Royston, GA

Average high temperature in December: 54.1°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (50.4°F).

Average low temperature in December: 39.4°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).

Average pressure in December
Royston, GA

Average pressure in December: 30.14"Hg

The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

Average wind speed in December
Royston, GA

Average wind speed in December: 6.3mph

The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
Royston, 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 (70%).

Average rainfall in December
Royston, GA

Average rainfall in December: 3.98"

The wettest month (with the highest rainfall) is December (3.98").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in December
Royston, GA

Average rainfall days in December: 12.3 days

The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is October (9.6 days).

Average snowfall in December
Royston, GA

Average snowfall in December: 1.38"

The month with the highest snowfall is December (1.38").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Royston, GA

Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Royston, 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 18min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in December
Royston, GA

Average sunshine days in December: 16.8 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (9.3 days).

Average UV index in December
Royston, 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
Royston, GA

Average cloud cover in December: 42

The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 27).

Average visibility in December
Royston, 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).