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
During the shift to December, Herald records a mild decrease in average high-temperature, moving from a cool 52.5°F (11.4°C) in November to a chilly 44.2°F (6.8°C). In Herald, the average low-temperature during the month of December is an icy 32°F (0°C).Humidity
The average relative humidity in December is 81%.Rainfall
In December, the rain falls for 10.8 days. Throughout December, 3.11" (79mm) of precipitation is accumulated. 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 December, it is snowing for 8.7 days. Throughout December, 6.42" (163mm) of snow is accumulated. Throughout the year, there are 45 snowfall days, and 29.09" (739mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 7:24 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:42 am and sunset at 5:23 pm EST.
Sunshine
In December, the average sunshine in Herald is 4.3h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Herald have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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
Herald, 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).
Herald, Virginia, USA
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