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 shift from November to December includes a minor decrease in the average high-temperature, lightly dropping from a fresh 53.2°F (11.8°C) to a chilly 45°F (7.2°C). Royal City encounters a steady low-temperature average of 32.4°F (0.2°C) throughout the month of December.Humidity
In December, the average relative humidity is 80%.Rainfall
In December, in Royal City, the rain falls for 10.8 days. Throughout December, 2.8" (71mm) of precipitation is accumulated. In Royal City, Virginia, during the entire year, the rain falls for 169.1 days and collects up to 32.09" (815mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Royal City, Virginia, during December, snow falls for 6.7 days and regularly aggregates up to 4.61" (117mm) of snow. Throughout the year, in Royal City, Virginia, there are 36.4 snowfall days, and 22.36" (568mm) of snow is accumulated.Daylight
December has the shortest days of the year in Royal City, with an average of 9h and 36min of daylight.On the first day of December in Royal City, sunrise is at 7:24 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:21 pm EST.
Sunshine
The average sunshine in December in Royal City is 4.6h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 2 during December leads to these advisories:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What are the temperatures in Royal City in December?
What is the average humidity in December in Royal City?
How much does it rain in Royal City in December?
How many days does it snow in December in Royal City?
What is the month with the shortest days in Royal City?
How many hours of daylight does Royal City have in December?
What time are sunrise and sunset in December in Royal City?
How many hours of sunshine does Royal City have in December?
When is the lowest UV index in Royal City?
What is the UV index reading in December in Royal City?
Average temperature in December
Royal City, VA
- Average high temperature in December: 45°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Royal City, VA
- 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 (29.99"Hg).
Average wind speed in December
Royal City, VA
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in December
Royal City, VA
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in December
Royal City, VA
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is February (3.7").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in December
Royal City, VA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Royal City, VA
- Average snowfall in December: 4.61"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Royal City, VA
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Royal City, VA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Royal City, VA
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Royal City, VA
- 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 City, VA
- Average cloud cover in December: 55
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Royal City, VA
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Royal City, Virginia, USA
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