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
Grundy observes a small decrease in the average high-temperature with the arrival of December, falling from November's fresh 53.2°F (11.8°C) to a chilly 45°F (7.2°C). December sees the temperature falling to a mean low of 32.4°F (0.2°C).Humidity
In December, the average relative humidity is 80%.Rainfall
In Grundy, in December, it is raining for 10.8 days, with typically 2.8" (71mm) of accumulated precipitation. In Grundy, 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 December, in Grundy, it is snowing for 6.7 days. Throughout December, 4.61" (117mm) of snow is accumulated. In Grundy, Virginia, during the entire year, snow falls for 36.4 days and aggregates up to 22.36" (568mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:24 am and sunset at 5:11 pm. On the last day of December, in Grundy, sunrise is at 7:42 am and sunset at 5:21 pm EST.
Sunshine
In Grundy, Virginia, the average sunshine in December 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 value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
What is the average December temperature in Grundy?
What is the average humidity in December in Grundy?
How much does it rain in Grundy in December?
How many days does it snow in December in Grundy?
What is the month with the shortest days in Grundy?
How many hours of daylight does Grundy have in December?
When are sunrise and sunset in December in Grundy?
How many hours of sunshine does Grundy have in December?
What is the month with the lowest UV index in Grundy?
What is the UV index intensity in December in Grundy?
Average temperature in December
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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
Grundy, 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).
Grundy, Virginia, USA
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