December weather forecast
Wilmington, VT

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Weather in December

December announces the arrival of winter in full swing in Wilmington, Vermont. A substantial amount of snowfall blankets the city, with approximately 5.91" (150mm) of snow covering the ground. The dropping temperature and icy breezes solidify the winter atmosphere. Daylight becomes scarce as the shortest day of the year occurs in this month. With high pressure and consistent cloud cover, the final month of the year is a stunning, wintry spectacle.

Temperature

The average high-temperature drops in December, from November's icy 41.9°F (5.5°C) to a subzero cold 31.3°F (-0.4°C). Throughout December, Wilmington witnesses a consistent average low-temperature of 21.2°F (-6°C).

Humidity

The average relative humidity in December is 85%.

Rainfall

In Wilmington, in December, during 9.2 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Wilmington, during the entire year, the rain falls for 143.7 days and collects up to 25.75" (654mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 10.6 days. Throughout December, 5.91" (150mm) of snow is accumulated. In Wilmington, during the entire year, snow falls for 60.7 days and aggregates up to 37.68" (957mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:03 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:27 pm EST.

Sunshine

In Wilmington, the average sunshine in December is 4h.

UV index

February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 1 during December translates into these guidelines:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Jun 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in Wilmington, records 31.3°F (-0.4°C), while the low-temperature is 21.2°F (-6°C).

What is the average humidity in December?

The average relative humidity in December is 85%.

How many days does it rain in December?

In Wilmington, Vermont, in December, it is raining for 9.2 days, with typically 2.4" (61mm) of accumulated precipitation.

How much does it snow in December?

In Wilmington, in December, during 10.6 snowfall days, 5.91" (150mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

What is the average length of the day in December?

In Wilmington, the average day length in December is 9h and 5min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:27 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4h.

What is the month with the lowest UV index?

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

What is the UV index intensity in December?

In Wilmington, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe 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
Wilmington, VT

Average temperature in December - Wilmington, VT
  • Average high temperature in December: 31.3°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (25.7°F).

  • Average low temperature in December: 21.2°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

Average pressure in December
Wilmington, VT

Average pressure in December - Wilmington, 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 (29.92"Hg).

Average wind speed in December
Wilmington, VT

Average wind speed in December - Wilmington, VT
  • Average wind speed in December: 8.2mph

The windiest months (with the highest average wind speed) are January and February (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Wilmington, VT

Average humidity in December - Wilmington, VT
  • Average humidity in December: 85%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December
Wilmington, VT

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

The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is March (1.65").

Average rainfall days in December
Wilmington, VT

Average rainfall days in December - Wilmington, VT
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (5.6 days).

Average snowfall in December
Wilmington, VT

Average snowfall in December - Wilmington, VT
  • Average snowfall in December: 5.91"

The month with the highest snowfall is February (9.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Wilmington, VT

Average snowfall days in December - Wilmington, VT
  • Average snowfall days in December: 10.6 days

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Wilmington, VT
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

Average sunshine days in December
Wilmington, VT

Average sunshine days in December - Wilmington, VT
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are June and July (11.7 days).

Average UV index in December
Wilmington, VT

Average UV index in December - Wilmington, 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).

Average cloud cover in December
Wilmington, VT

Average cloud cover in December - Wilmington, VT
  • Average cloud cover in December: 58

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 39).

Average visibility in December
Wilmington, VT

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

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

Wilmington, Vermont, USA

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