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
With the commencement of December, Royal Blue records a moderate temperature decline, with the average high easing from November's fresh 54.7°F (12.6°C) to a chilly 46.9°F (8.3°C). Throughout December, Royal Blue witnesses a consistent average low-temperature of 33.4°F (0.8°C).Humidity
February and December, with an average relative humidity of 81%, are the most humid months in Royal Blue.Rainfall
In Royal Blue, during December, the rain falls for 12.6 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, in Royal Blue, there are 167 rainfall days, and 33.62" (854mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Royal Blue, during December, snow falls for 3.1 days and regularly aggregates up to 0.91" (23mm) of snow. In Royal Blue, Tennessee, during the entire year, snow falls for 17.6 days and aggregates up to 6.02" (153mm) of snow.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Royal Blue, Tennessee.On the first day of December in Royal Blue, Tennessee, sunrise is at 7:30 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:32 pm EST.
Sunshine
The average sunshine in December in Royal Blue is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Frequently asked questions
What are the temperatures in Royal Blue in December?
What are the most humid months in Royal Blue?
What is the average humidity in December in Royal Blue?
How many days does it rain in December in Royal Blue?
How many days does it snow in December in Royal Blue?
What is the month with the shortest days in Royal Blue?
What is the average length of the day in December in Royal Blue?
When is the sunrise / sunset in December in Royal Blue?
How long on average sun shines in December in Royal Blue?
When is the lowest UV index in Royal Blue?
What is the UV index intensity in December in Royal Blue?
Average temperature in December
Royal Blue, TN
- Average high temperature in December: 46.9°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (42.3°F).
- Average low temperature in December: 33.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in December
Royal Blue, TN
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Royal Blue, TN
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in December
Royal Blue, TN
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Royal Blue, TN
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is February (3.94").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Royal Blue, TN
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Royal Blue, TN
- Average snowfall in December: 0.91"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Royal Blue, TN
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Royal Blue, TN
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Royal Blue, TN
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in December
Royal Blue, TN
- 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, February and December (UV index 2).
Average cloud cover in December
Royal Blue, TN
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are June and August (Cloud cover 32).
Average visibility in December
Royal Blue, TN
- Average visibility in December: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (5mi).
Royal Blue, Tennessee, USA
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