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
In December, the meteorological conditions change slightly, with the average high-temperature moving from a comfortable 61.3°F (16.3°C) in November to a fresh 53.8°F (12.1°C). During December, Grayson records a consistent average nighttime temperature of 39.6°F (4.2°C).Humidity
December is the most humid month, with an average relative humidity of 77%.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 2.36" (60mm) of precipitation is accumulated. Throughout the year, in Grayson, there are 158.9 rainfall days, and 27.32" (694mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 0.5 days. Throughout December, 0.12" (3mm) of snow is accumulated. In Grayson, during the entire year, snow falls for 2.6 days and aggregates up to 1.02" (26mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:37 pm EST.
Sunshine
With an average of 5h of sunshine, December has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 suggests this advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. When the Sun is at its strongest around midday, find shade and limit exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Grayson have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Grayson have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Grayson, GA
- Average high temperature in December: 53.8°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in December: 39.6°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 (34.9°F).
Average pressure in December
Grayson, 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
Grayson, GA
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Grayson, 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
Grayson, GA
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.78").
The driest month (with the least rainfall) is October (1.46").
Average rainfall days in December
Grayson, GA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (18.8 days).
The months with the least rainy days are October and November (9.4 days).
Average snowfall in December
Grayson, GA
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Grayson, GA
- Average snowfall days in December: 0.5 days
The months with the highest number of snowfall days are January and February (0.8 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
Grayson, 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
Grayson, GA
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is October (21.1 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Grayson, GA
- 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
Grayson, GA
- Average cloud cover in December: 46
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Grayson, 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).
Grayson, Georgia, USA
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