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
Transitioning from November to December involves a subtle drop in average high-temperatures, descending from a cool 52.5°F (11.4°C) to a frosty 44.2°F (6.8°C). Glamorgan's temperature lowers to a mean of 32°F (0°C) during the nights in December.Humidity
In December, the average relative humidity is 81%.Rainfall
In Glamorgan, in December, it is raining for 10.8 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, there are 179.6 rainfall days, and 38.7" (983mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Glamorgan. In Glamorgan, in December, snow falls for 8.7 days, with typically accumulated 6.42" (163mm) of snow. Throughout the year, in Glamorgan, Virginia, there are 45 snowfall days, and 29.09" (739mm) of snow is accumulated.Daylight
December has the shortest days of the year in Glamorgan, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:43 am and sunset at 5:23 pm EST.
Sunshine
In Glamorgan, the average sunshine in December is 4.3h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Glamorgan, Virginia. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Enhance your sun protection with tightly woven, yet airy clothing. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Glamorgan?
What is the average humidity in December in Glamorgan?
How much does it rain in Glamorgan in December?
How much does it snow in Glamorgan in December?
What is the month with the shortest days in Glamorgan?
What is the average length of the day in December in Glamorgan?
When is the sunrise / sunset in December in Glamorgan?
How long on average sun shines in December in Glamorgan?
When is the lowest UV index in Glamorgan?
What is the UV index intensity in December in Glamorgan?
Average temperature in December
Glamorgan, VA
- Average high temperature in December: 44.2°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 (39.4°F).
- Average low temperature in December: 32°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in December
Glamorgan, VA
- Average pressure in December: 30.15"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
Glamorgan, VA
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Glamorgan, VA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and November (77%).
Average rainfall in December
Glamorgan, VA
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is July (3.94").
The driest months (with the least rainfall) are September and November (2.52").
Average rainfall days in December
Glamorgan, VA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in December
Glamorgan, VA
- Average snowfall in December: 6.42"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glamorgan, VA
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glamorgan, 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: 4h and 2min
The months with the most sunshine are June and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Glamorgan, VA
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (9 days).
Average UV index in December
Glamorgan, VA
- Average UV index in December: 2
The months with the highest UV index are June 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
Glamorgan, VA
- Average cloud cover in December: 59
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in December
Glamorgan, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Glamorgan, Virginia, USA
Weather forecast for your location
2. Allow the app to use your location