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
The commencement of December indicates a gentle shift in the average high-temperature, receding from November's moderate 57.6°F (14.2°C) to a fresh 50.5°F (10.3°C). Jamestown's average low-temperature during December nights is observed to be a cold 37.6°F (3.1°C).Humidity
The most humid month is December, with an average relative humidity of 78%.Rainfall
The months with the least rainfall are October and December Rain falls for 10.9 days and accumulates 1.38" (35mm) of rain.Snowfall
Months with snowfall are January through March, November and December. In Jamestown, in December, snow falls for 0.9 days, with typically accumulated 0.28" (7mm) of snow. Throughout the year, there are 8.3 snowfall days, and 2.52" (64mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:49 pm. On the last day of December, in Jamestown, sunrise is at 7:20 am and sunset at 5:00 pm EST.
Sunshine
The average sunshine in December is 5.5h.UV index
The months with the lowest UV index in Jamestown, Virginia, are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 during December translates into the following directions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
What are the temperatures in Jamestown in December?
What is the most humid month in Jamestown?
What is the average humidity in December in Jamestown?
What is the driest month in Jamestown?
How much does it rain in Jamestown in December?
How many days does it snow in December in Jamestown?
What is the month with the shortest days in Jamestown?
How many hours of daylight does Jamestown have in December?
When are sunrise and sunset in December in Jamestown?
How many hours of sunshine does Jamestown have in December?
When is the lowest UV index in Jamestown?
What is the UV index intensity in December in Jamestown?
Average temperature in December
Jamestown, VA
- Average high temperature in December: 50.5°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in December: 37.6°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in December
Jamestown, VA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Jamestown, VA
- Average wind speed in December: 6.9mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Jamestown, 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 (73%).
Average rainfall in December
Jamestown, VA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is August (2.36").
The driest months (with the least rainfall) are October and December (1.38").
Average rainfall days in December
Jamestown, VA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is August (16.3 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Jamestown, VA
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Jamestown, VA
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Jamestown, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in December
Jamestown, VA
- Average sunshine days in December: 18.2 days
The months with the most sunshine days are October and November (19.7 days).
The month with the least sunshine days is August (12.2 days).
Average UV index in December
Jamestown, VA
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Jamestown, 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 28).
Average visibility in December
Jamestown, VA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Jamestown, Virginia, USA
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