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 arrival of December, Cullen experiences a modest decline in average high-temperatures, transitioning from a mild 56.3°F (13.5°C) in November to a chilly 49.1°F (9.5°C). Cullen experiences a mean temperature of 34.7°F (1.5°C) during December nights.Humidity
The most humid month in Cullen is December, with an average relative humidity of 78%.Rainfall
In December, the rain falls for 10.5 days. Throughout December, 2.64" (67mm) of precipitation is accumulated. In Cullen, Virginia, during the entire year, the rain falls for 156.1 days and collects up to 30" (762mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Cullen, in December, during 1.3 snowfall days, 1.77" (45mm) of snow is typically accumulated. Throughout the year, in Cullen, there are 10.8 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:10 am and sunset at 4:57 pm. On the last day of December, in Cullen, sunrise is at 7:28 am and sunset at 5:07 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.4h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Cullen, Virginia. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 suggests this advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Cullen?
What is the most humid month in Cullen?
What is the average humidity in December in Cullen?
How many days does it rain in December in Cullen?
How many days does it snow in December in Cullen?
What is the month with the shortest days in Cullen?
What is the average length of the day in December in Cullen?
What time are sunrise and sunset in December in Cullen?
What is the month with the least sunshine in Cullen?
How many hours of sunshine does Cullen have in December?
When is the lowest UV index in Cullen?
How high is the UV index in December in Cullen?
Average temperature in December
Cullen, VA
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (44.6°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
Cullen, 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 (29.96"Hg).
Average wind speed in December
Cullen, VA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Cullen, VA
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Cullen, VA
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Cullen, VA
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (9 days).
Average snowfall in December
Cullen, VA
- Average snowfall in December: 1.77"
The month with the highest snowfall is March (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Cullen, VA
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cullen, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Cullen, VA
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Cullen, 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
Cullen, VA
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Cullen, VA
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, June, July, August, October and November (6mi).
The months with the lowest visibility are January, May, September and December (5mi).
Cullen, Virginia, USA
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