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
With the beginning of December, the average high-temperature shows a small decrease, transitioning from a fresh 53.2°F (11.8°C) in November to a chilly 45°F (7.2°C). Grundy experiences a consistent average temperature of 32.4°F (0.2°C) throughout the nights in December.Humidity
The average relative humidity in December is 80%.Rainfall
In December, the rain falls for 10.8 days. Throughout December, 2.8" (71mm) of precipitation is accumulated. Throughout the year, there are 169.1 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Grundy. In Grundy, in December, snow falls for 6.7 days, with typically accumulated 4.61" (117mm) of snow. Throughout the year, there are 36.4 snowfall days, and 22.36" (568mm) of snow is accumulated.Daylight
The month with the shortest days in Grundy 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, sunrise is at 7:42 am and sunset at 5:21 pm EST.
Sunshine
In December, the average sunshine is 4.6h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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 Grundy in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index in Grundy?
How high is the UV index in December?
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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