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 signifies a gentle decline in Roberts Mill's average high-temperature, easing from a cool 51.8°F (11°C) in November to a frosty 43.9°F (6.6°C). During the month of December, an average temperature of 30.2°F (-1°C) is noted during the nights.Humidity
In Roberts Mill, the average relative humidity in December is 80%.Rainfall
In December, the rain falls for 11.9 days. Throughout December, 2.68" (68mm) of precipitation is accumulated. In Roberts Mill, during the entire year, the rain falls for 191 days and collects up to 30.87" (784mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 7.2 days and accumulates 4.8" (122mm) of snow.Daylight
December has the shortest days of the year in Roberts Mill, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:20 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:19 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
January, February, November 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 unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 2 in December transforms into this advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
Is December cold in Roberts Mill?
What is the average humidity in December in Roberts Mill?
How much does it rain in Roberts Mill in December?
What is the snowiest month in Roberts Mill?
How much does it snow in Roberts Mill in December?
What is the month with the shortest days in Roberts Mill?
How many hours of daylight does Roberts Mill have in December?
When is the sunrise / sunset in December in Roberts Mill?
How long on average sun shines in December in Roberts Mill?
What are the months with the lowest UV index in Roberts Mill?
What is the UV index reading in December in Roberts Mill?
Average temperature in December
Roberts Mill, VA
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Roberts Mill, VA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Roberts Mill, VA
- Average wind speed in December: 7.3mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Roberts Mill, VA
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is November (77%).
Average rainfall in December
Roberts Mill, VA
- Average rainfall in December: 2.68"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Roberts Mill, VA
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is July (22 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in December
Roberts Mill, VA
- Average snowfall in December: 4.8"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Roberts Mill, VA
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Roberts Mill, VA
- 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: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Roberts Mill, VA
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (6.7 days).
Average UV index in December
Roberts Mill, VA
- Average UV index in December: 2
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Roberts Mill, VA
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are June, July and August (Cloud cover 40).
Average visibility in December
Roberts Mill, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Roberts Mill, Virginia, USA
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