December weather forecast
Vilas, SD

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Weather in December

The first month of the winter, December, is also a subzero cold month in Vilas, South Dakota, with an average temperature ranging between min 14.2°F (-9.9°C) and max 25.7°F (-3.5°C).

Temperature

In December, the average high-temperature decreases considerably from a wintry 41.9°F (5.5°C) in November to a freezing cold 25.7°F (-3.5°C). Vilas records an average temperature drop to a still subzero cold 14.2°F (-9.9°C) in December.

Humidity

In December, the average relative humidity in Vilas is 86%.

Rainfall

In Vilas, in December, it is raining for 3.3 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, in Vilas, there are 111.2 rainfall days, and 21.14" (537mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Vilas, in December, snow falls for 10.3 days, with typically accumulated 4.21" (107mm) of snow. Throughout the year, there are 49.4 snowfall days, and 20.04" (509mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:45 am and sunset at 4:53 pm. On the last day of December, sunrise is at 8:05 am and sunset at 5:02 pm CST.

Sunshine

In December, the average sunshine in Vilas is 4.1h.

UV index

January 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 low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 1 suggests this advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

How cold is it in Vilas in December?

An average high-temperature, in December, in Vilas, is 25.7°F (-3.5°C) and the average low-temperature is 14.2°F (-9.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 84.2°F (29°C).

What is the average humidity in December in Vilas?

In December, the average relative humidity is 86%.

How many days does it rain in December in Vilas?

In Vilas, South Dakota, during December, the rain falls for 3.3 days and regularly aggregates up to 1.02" (26mm) of precipitation.

How many days does it snow in December in Vilas?

In December, it is snowing for 10.3 days. Throughout December, 4.21" (107mm) of snow is accumulated.

What is the month with the shortest days in Vilas?

December has the shortest days of the year in Vilas, with an average of 9h and 0min of daylight.

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

In December, the average day length in Vilas, South Dakota, is 8h and 58min.

When are sunrise and sunset in December in Vilas?

On the first day of December, sunrise is at 7:45 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 5:02 pm CST.

How long on average sun shines in December in Vilas?

In December, the average sunshine duration in Vilas, South Dakota, is 4.1h.

What are the months with the lowest UV index in Vilas?

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

How high is the UV index in December in Vilas?

In December, the average daily maximum UV index in Vilas is 1. A UV Index value of 2, and less, symbolizes a low health risk 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
Vilas, SD

Average temperature in December - Vilas, SD
  • Average high temperature in December: 25.7°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in December: 14.2°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

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Average pressure in December
Vilas, SD

Average pressure in December - Vilas, SD
  • Average pressure in December: 30.13"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
Vilas, SD

Average wind speed in December - Vilas, SD
  • Average wind speed in December: 10.6mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).

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Average humidity in December
Vilas, SD

Average humidity in December - Vilas, SD
  • Average humidity in December: 86%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in December
Vilas, SD

Average rainfall in December - Vilas, SD
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is November (0.59").

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Average rainfall days in December
Vilas, SD

Average rainfall days in December - Vilas, SD
  • Average rainfall days in December: 3.3 days

The month with the highest number of rainy days is June (18.7 days).
The month with the least rainy days is January (1.6 days).

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Average snowfall in December
Vilas, SD

Average snowfall in December - Vilas, SD
  • Average snowfall in December: 4.21"

The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Vilas, SD

Average snowfall days in December - Vilas, SD
  • Average snowfall days in December: 10.3 days

The month with the highest number of snowfall days is January (11.3 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
Vilas, SD

Average daylight in December / Average sunshine in December - Vilas, SD
  • 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: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in December
Vilas, SD

Average sunshine days in December - Vilas, SD
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is November (22.4 days).
The month with the least sunshine days is June (9.5 days).

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Average UV index in December
Vilas, SD

Average UV index in December - Vilas, SD
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in December
Vilas, SD

Average cloud cover in December - Vilas, SD
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Vilas, SD

Average visibility in December - Vilas, SD
  • Average visibility in December: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Vilas, South Dakota, USA

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