December weather forecastBlue Grass, VA
December
Weather in December
The first month of the winter, December, is still a cold month in Blue Grass, Virginia, with temperature in the range of an average low of 25.7°F (-3.5°C) and an average high of 37.6°F (3.1°C).Temperature
With the arrival of December, Blue Grass notices a mild change in the average high-temperature, sliding from November's frosty 45.7°F (7.6°C) to a wintry 37.6°F (3.1°C). In the month of December, Blue Grass records a consistent average low-temperature of 25.7°F (-3.5°C).Humidity
In December, the average relative humidity in Blue Grass is 85%.Rainfall
In Blue Grass, in December, during 8.5 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Blue Grass, during the entire year, the rain falls for 153.4 days and collects up to 23.23" (590mm) of precipitation.Snowfall
Months with snowfall in Blue Grass are January through May, October through December. In December, it is snowing for 14.8 days. Throughout December, 5.63" (143mm) of snow is accumulated. Throughout the year, there are 80.8 snowfall days, and 36.5" (927mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:35 am and sunset at 5:07 pm EST.
Sunshine
In December, the average sunshine is 3.8h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: An average UV index of 1 in December transforms into this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Enhance your sun protection with tightly woven, yet airy clothing. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Blue Grass, VA
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Blue Grass, VA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Blue Grass, VA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Blue Grass, VA
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is June (80%).
Average rainfall in December
Blue Grass, VA
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is November (1.3").
Average rainfall days in December
Blue Grass, VA
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Blue Grass, VA
- Average snowfall in December: 5.63"
The month with the highest snowfall is January (7.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Blue Grass, VA
- Average snowfall days in December: 14.8 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Blue Grass, VA
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 3h and 48min
The month with the most sunshine is June (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Blue Grass, VA
- Average sunshine days in December: 10.2 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (7.7 days).
Average UV index in December
Blue Grass, VA
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Blue Grass, VA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are June, July and August (Cloud cover 47).
Average visibility in December
Blue Grass, VA
- Average visibility in December: 4mi
The months with the highest visibility are April and November (5mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (4mi).
