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
Arrival of December comes with a reduction in the average high-temperature, falling from an icy 38.5°F (3.6°C) in November to a freezing cold 27°F (-2.8°C). In Derby Line, the nighttime temperature averages to a still subzero cold 16.9°F (-8.4°C) during December.Humidity
In Derby Line, the average relative humidity in December is 88%.Rainfall
In Derby Line, during December, the rain falls for 9.7 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, there are 166.1 rainfall days, and 33.07" (840mm) of precipitation is accumulated.Snowfall
Months with snowfall in Derby Line are January through May, October through December. In Derby Line, in December, during 22.4 snowfall days, 10.51" (267mm) of snow is typically accumulated. In Derby Line, during the entire year, snow falls for 115.7 days and aggregates up to 66.57" (1691mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:08 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:16 pm EST.
Sunshine
The average sunshine in December is 2.7h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 1 in December leads to these guidelines:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days 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 in Derby Line?
How many hours of sunshine does Derby Line have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Derby Line, VT
- Average high temperature in December: 27°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in December: 16.9°F
The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in December
Derby Line, VT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Derby Line, VT
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Derby Line, VT
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Derby Line, VT
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (2.28").
Average rainfall days in December
Derby Line, VT
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is June (20.1 days).
The month with the least rainy days is January (5.1 days).
Average snowfall in December
Derby Line, VT
- Average snowfall in December: 10.51"
The month with the highest snowfall is February (14.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Derby Line, VT
- Average snowfall days in December: 22.4 days
The month with the highest number of snowfall days is January (24 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Derby Line, VT
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 2h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 2h and 0min).
Average sunshine days in December
Derby Line, VT
- Average sunshine days in December: 5.6 days
The month with the most sunshine days is September (15 days).
The month with the least sunshine days is February (4.3 days).
Average UV index in December
Derby Line, VT
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Derby Line, VT
- Average cloud cover in December: 74
The month with the most cloud cover is February (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Derby Line, VT
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Derby Line, Vermont, USA
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