December weather forecast
Underhill, VT

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Weather in December

The first month of the winter, December, is still a freezing cold month in Underhill, Vermont, with an average temperature varying between 20.1°F (-6.6°C) and 30.2°F (-1°C).

Temperature

With December's arrival, Underhill sees a decrease in average high-temperatures, moving from an icy 41.5°F (5.3°C) in November to a subzero cold 30.2°F (-1°C). During December, Underhill witnesses a consistent average low-temperature of 20.1°F (-6.6°C).

Humidity

The average relative humidity in December is 84%.

Rainfall

In Underhill, in December, it is raining for 10.7 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, there are 161.7 rainfall days, and 29.33" (745mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Underhill are January through May, October through December. In Underhill, Vermont, during December, snow falls for 18.1 days and regularly aggregates up to 7.83" (199mm) of snow. In Underhill, Vermont, during the entire year, snow falls for 94.7 days and aggregates up to 50.91" (1293mm) of snow.

Daylight

December has the shortest days of the year in Underhill, Vermont, with an average of 8h and 54min of daylight.
On the first day of December, sunrise is at 7:08 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:21 pm EST.

Sunshine

In December, the average sunshine is 3.2h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Underhill, Vermont. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 1 during December leads to these instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Underhill in December?

The average high-temperature and low-temperature during December are 30.2°F (-1°C) and 20.1°F (-6.6°C) respectively.

What is the average humidity in December in Underhill?

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

How many days does it rain in December in Underhill?

In Underhill, Vermont, in December, during 10.7 rainfall days, 2.28" (58mm) of precipitation is typically accumulated.

How many days does it snow in December in Underhill?

In Underhill, Vermont, during December, snow falls for 18.1 days and regularly aggregates up to 7.83" (199mm) of snow.

What is the month with the shortest days in Underhill?

December has the shortest days of the year, with an average of 8h and 54min of daylight.

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

In Underhill, Vermont, the average day length in December is 8h and 54min.

When is the sunrise / sunset in December in Underhill?

On the first day of December, sunrise is at 7:08 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:21 pm EST.

How long on average sun shines in December in Underhill?

The average sunshine duration in December in Underhill, Vermont, is 3.2h.

When is the lowest UV index in Underhill?

The months with the lowest UV index in Underhill, Vermont, are January and December, with an average maximum UV index of 1.

What is the UV index intensity in December in Underhill?

In Underhill, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Underhill, VT

Average temperature in December - Underhill, VT
  • Average high temperature in December: 30.2°F

The warmest month (with the highest average high temperature) is July (78.4°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 (57.2°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure in December
Underhill, VT

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

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Underhill, VT

Average wind speed in December - Underhill, VT
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Underhill, VT

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

The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (76%).

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Average rainfall in December
Underhill, VT

Average rainfall in December - Underhill, VT
  • Average rainfall in December: 2.28"

The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in December
Underhill, VT

Average rainfall days in December - Underhill, VT
  • Average rainfall days in December: 10.7 days

The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (6.2 days).

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Average snowfall in December
Underhill, VT

Average snowfall in December - Underhill, VT
  • Average snowfall in December: 7.83"

The month with the highest snowfall is February (11.73").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Underhill, VT

Average snowfall days in December - Underhill, VT
  • Average snowfall days in December: 18.1 days

The month with the highest number of snowfall days is January (20.7 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
Underhill, VT

Average daylight in December / Average sunshine in December - Underhill, VT
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).

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Average sunshine days in December
Underhill, VT

Average sunshine days in December - Underhill, VT
  • Average sunshine days in December: 8.3 days

The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is February (6.8 days).

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Average UV index in December
Underhill, VT

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

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

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Average cloud cover in December
Underhill, VT

Average cloud cover in December - Underhill, VT
  • Average cloud cover in December: 68

The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 35).

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Average visibility in December
Underhill, VT

Average visibility in December - Underhill, 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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Underhill, Vermont, USA

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