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
The onset of December results in a small decrease in the average high-temperature, moderately receding from 65.1°F (18.4°C) in November to a still refreshing 57.6°F (14.2°C). In the month of December, the average low-temperature in Grayson usually rests at a chilly 42.8°F (6°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 82%.Rainfall
In December, in Grayson, the rain falls for 13.4 days. Throughout December, 3.39" (86mm) of precipitation is accumulated. In Grayson, during the entire year, the rain falls for 172.1 days and collects up to 39.45" (1002mm) of precipitation.Snowfall
January through March and December are months with snowfall in Grayson. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 2.4 snowfall days, and 0.91" (23mm) of snow is accumulated.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year in Grayson.On the first day of the month, sunrise is at 6:51 am and sunset at 5:03 pm. On the last day of December, sunrise is at 7:08 am and sunset at 5:14 pm CST.
Sunshine
December has the least sunshine of the year in Grayson, with an average of 4.8h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Grayson, Louisiana. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 3 in December translates into this advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
What is the temperature in December in Grayson?
What is the most humid month in Grayson?
What is the average humidity in December in Grayson?
How many days does it rain in December in Grayson?
When does it start snowing in Grayson?
What is the month with the shortest days in Grayson?
How many hours of daylight does Grayson have in December?
When is the sunrise / sunset in December in Grayson?
What is the month with the least sunshine in Grayson?
How many hours of sunshine does Grayson have in December?
What are the months with the lowest UV index in Grayson?
How high is the UV index in December in Grayson?
Average temperature in December
Grayson, LA
- Average high temperature in December: 57.6°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (54.9°F).
- Average low temperature in December: 42.8°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in December
Grayson, LA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Grayson, LA
- Average wind speed in December: 6.4mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in December
Grayson, LA
- Average humidity in December: 82%
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Grayson, LA
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is November (2.4").
Average rainfall days in December
Grayson, LA
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in December
Grayson, LA
- Average snowfall in December: 0.12"
The months with the highest snowfall are January and February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Grayson, LA
- 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 April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Grayson, LA
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
Grayson, LA
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in December
Grayson, LA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Grayson, LA
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in December
Grayson, LA
- Average visibility in December: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Grayson, Louisiana, USA
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