December weather forecast
Killington, VT

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Weather in December

December crowns Killington with a picturesque winter scene as the snowfall intensifies from November. The monthly average high and low temperatures drop to 29.8°F (-1.2°C) and 20.1°F (-6.6°C) respectively, signaling the return of a hard winter. As daylight recedes to the minimum for the year, so does the city's visibility under a blanket of snow. The atmospheric pressure remains relatively unchanged from the previous month, supporting a stable winter weather pattern. Much like January, December's weather curtails outdoor activity but prompts cozy indoor gatherings instead amidst the heart of winter.

Temperature

Killington's December weather features a mild decline in high-temperatures, reducing from a cold 40.8°F (4.9°C) in November to a freezing cold 29.8°F (-1.2°C). Killington records an average low-temperature of 20.1°F (-6.6°C) throughout the month of December.

Humidity

In December, the average relative humidity in Killington is 84%.

Rainfall

In December, the rain falls for 9 days. Throughout December, 2.4" (61mm) of precipitation is accumulated. In Killington, during the entire year, the rain falls for 156.1 days and collects up to 29.09" (739mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Killington, in December, snow falls for 17.7 days, with typically accumulated 8.23" (209mm) of snow. Throughout the year, in Killington, there are 93.2 snowfall days, and 58.35" (1482mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Killington, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:15 pm. On the last day of December, in Killington, Vermont, sunrise is at 7:24 am and sunset at 4:24 pm EST.

Sunshine

The average sunshine in December in Killington is 3.6h.

UV index

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 maximum daily UV index of 1 during December morphs into the following directions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Frequently asked questions

How cold is December in Killington?

In Killington, 29.8°F (-1.2°C) is the average high-temperature and 20.1°F (-6.6°C) is the average low-temperature during December.

What is the average humidity in December in Killington?

In December, the average relative humidity in Killington, Vermont, is 84%.

How many days does it rain in December in Killington?

In Killington, in December, it is raining for 9 days, with typically 2.4" (61mm) of accumulated precipitation.

How much does it snow in Killington in December?

In Killington, during December, snow falls for 17.7 days and regularly aggregates up to 8.23" (209mm) of snow.

What is the month with the shortest days in Killington?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

What is the average length of the day in December in Killington?

In Killington, the average day length in December is 8h and 59min.

What time are sunrise and sunset in December in Killington?

On the first day of December in Killington, Vermont, sunrise is at 7:05 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:24 pm EST.

How long on average sun shines in December in Killington?

In December, the average sunshine duration in Killington, Vermont, is 3.6h.

What is the month with the lowest UV index in Killington?

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Killington.

How high is the UV index in December in Killington?

In Killington, Vermont, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
40.8°F 4.9°C
29.8°F -1.2°C
24.3°F -4.3°C
Average low temperature
28.9°F -1.7°C
20.1°F -6.6°C
12.2°F -11°C
Average pressure
30.08" 764mmHg
30.05" 763mmHg
30.02" 763mmHg
Average wind speed
6.8mph 10.9km/h
7mph 11.3km/h
7.3mph 11.7km/h
Average max. wind speed
7.5mph 12.1km/h
7.5mph 12.1km/h
8mph 12.9km/h
Average wind speed gusts
10.7mph 17.2km/h
10.7mph 17.2km/h
11.4mph 18.3km/h
Average humidity
79%
84%
87%
Average rainfall
2.32" 59mm
2.4" 61mm
2.17" 55mm
Average rainfall days
10.3
9
8.3
Average snowfall
8.35" 212mm
8.23" 209mm
11.34" 288mm
Average snowfall days
9
17.7
19.3
Average daylight
9h 4min
9h 0min
9h 2min
Average sunshine
4h 4min
3h 4min
3h 2min
Average sunshine days
13.5
10.6
10
Average UV index
2
1
2
Average cloud cover
52%
64%
66%
Average visibility
5mi 8km
5mi 8km
4mi 6.4km

Average temperature in December
Killington, VT

Average temperature in December - Killington, VT
  • Average high temperature in December: 29.8°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in December: 20.1°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

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Average pressure in December
Killington, VT

Average pressure in December - Killington, VT
  • Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Killington, VT

Average wind speed in December - Killington, VT
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in December
Killington, VT

Average humidity in December - Killington, VT
  • Average humidity in December: 84%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (76%).

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Average rainfall in December
Killington, VT

Average rainfall in December - Killington, VT
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is October (2.99").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in December
Killington, VT

Average rainfall days in December - Killington, VT
  • Average rainfall days in December: 9 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in December
Killington, VT

Average snowfall in December - Killington, VT
  • Average snowfall in December: 8.23"

The month with the highest snowfall is February (12.99").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Killington, VT

Average snowfall days in December - Killington, VT
  • Average snowfall days in December: 17.7 days

The month with the highest number of snowfall days is February (19.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Killington, VT

Average daylight in December / Average sunshine in December - Killington, VT
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 3h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).

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Average sunshine days in December
Killington, VT

Average sunshine days in December - Killington, VT
  • Average sunshine days in December: 10.6 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in December
Killington, VT

Average UV index in December - Killington, VT
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in December
Killington, VT

Average cloud cover in December - Killington, VT
  • Average cloud cover in December: 64

The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in December
Killington, VT

Average visibility in December - Killington, VT
  • Average visibility in December: 5mi

The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).

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Killington, Vermont, USA

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