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
December is characterized by a mild reduction in the average high-temperature, from a moderate 59.9°F (15.5°C) in November to a cool 51.6°F (10.9°C). Royal records an average low-temperature of 36.9°F (2.7°C) throughout the month of December.Humidity
In Royal, the average relative humidity in December is 79%.Rainfall
In Royal, in December, during 10.5 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 148.1 rainfall days, and 33.78" (858mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Royal, in December, snow falls for 0.4 days, with typically accumulated 0.28" (7mm) of snow. In Royal, during the entire year, snow falls for 4.2 days and aggregates up to 1.93" (49mm) 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 7:01 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:13 pm CST.
Sunshine
January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Royal, AR
- Average high temperature in December: 51.6°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in December: 36.9°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in December
Royal, AR
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Royal, AR
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Royal, AR
- Average humidity in December: 79%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Royal, AR
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days in December
Royal, AR
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in December
Royal, AR
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Royal, AR
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (1.7 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
Royal, AR
- 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Royal, AR
- Average sunshine days in December: 19.1 days
The months with the most sunshine days are January and October (19.4 days).
The month with the least sunshine days is August (13.5 days).
Average UV index in December
Royal, AR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Royal, AR
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 30).
Average visibility in December
Royal, AR
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
Royal, Arkansas, USA
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