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 start of December comes with a small reduction in the average high-temperature, subtly receding from a cool 52.7°F (11.5°C) in November to a frosty 44.6°F (7°C). Riner cools down to an average low-temperature of 30.4°F (-0.9°C) throughout the month of December.Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In December, the rain falls for 11 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. Throughout the year, in Riner, there are 161.9 rainfall days, and 21.97" (558mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Riner. In Riner, in December, during 4.5 snowfall days, 2.36" (60mm) of snow is typically accumulated. Throughout the year, there are 29.5 snowfall days, and 11.3" (287mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Riner.On the first day of the month, sunrise is at 7:17 am and sunset at 5:04 pm. On the last day of December, in Riner, Virginia, sunrise is at 7:35 am and sunset at 5:15 pm EST.
Sunshine
In Riner, the average sunshine in December is 5h.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 reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
Is December cold in Riner?
What is the most humid month in Riner?
What is the average humidity in December in Riner?
How much does it rain in Riner in December?
How much does it snow in Riner in December?
What is the month with the shortest days in Riner?
What is the average length of the day in December in Riner?
When is the sunrise / sunset in December in Riner?
How long on average sun shines in December in Riner?
What are the months with the lowest UV index in Riner?
What is the UV index intensity in December in Riner?
Average temperature in December
Riner, VA
- Average high temperature in December: 44.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 30.4°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Riner, 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
Riner, VA
- Average wind speed in December: 7.1mph
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
Riner, VA
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are April, June, July and November (76%).
Average rainfall in December
Riner, VA
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in December
Riner, VA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Riner, VA
- Average snowfall in December: 2.36"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Riner, VA
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riner, 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 42min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Riner, VA
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Riner, VA
- Average UV index in December: 2
The months with the highest UV index are June, July and 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
Riner, VA
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 36).
Average visibility in December
Riner, 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).
Riner, Virginia, USA
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