December weather forecast
Box Elder, SD

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Weather in December

December brings the full swing of the winter season to Box Elder, characterized by diminished sunshine hours and a significant drop in temperature. The city gets ready to embrace the holiday spirit against a backdrop of snow-laden streets and roofs, creating a classical winter scene. With maximum temperatures only reaching 32.5°F (0.3°C), the weather predominately stays in the frosty domain. Evenings glow with festive lights, adding sparkle to the winter nights. Concluding the year, Box Elder looks forth to another cycle of changing seasons, each offering its distinct attractiveness and charm.

Temperature

In Box Elder, the month of December registers the lowest temperatures, averaging 32.5°F (0.3°C) at the peak and 18.7°F (-7.4°C) at the lowest.

Humidity

In Box Elder, the average relative humidity in December is 74%.

Rainfall

In Box Elder, during December, the rain falls for 4.8 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Box Elder, South Dakota, during the entire year, the rain falls for 118.8 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In December, it is snowing for 8.1 days. Throughout December, 2.64" (67mm) of snow is accumulated. In Box Elder, during the entire year, snow falls for 50.4 days and aggregates up to 24.41" (620mm) of snow.

Daylight

December has the shortest days of the year in Box Elder, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:15 pm. On the last day of December, in Box Elder, sunrise is at 7:27 am and sunset at 4:24 pm MST.

Sunshine

In Box Elder, the average sunshine in December is 6h.

UV index

The months with the lowest UV index in Box Elder, South Dakota, are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 in December translates into these instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What month is the coldest in Box Elder?

In Box Elder, December is the coldest month, with temperatures averaging a high of 32.5°F (0.3°C) and a low of 18.7°F (-7.4°C).

How cold is it in Box Elder in December?

The high-temperature, in December, in Box Elder, records 32.5°F (0.3°C), while the low-temperature is 18.7°F (-7.4°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 84.2°F (29°C).

What is the average humidity in December in Box Elder?

The average relative humidity in December is 74%.

How many days does it rain in December in Box Elder?

In December, the rain falls for 4.8 days. Throughout December, 0.63" (16mm) of precipitation is accumulated.

How much does it snow in Box Elder in December?

In Box Elder, in December, during 8.1 snowfall days, 2.64" (67mm) of snow is typically accumulated.

What is the month with the shortest days in Box Elder?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Box Elder.

How many hours of daylight does Box Elder have in December?

In December, the average day length in Box Elder, South Dakota, is 8h and 56min.

When is the sunrise / sunset in December in Box Elder?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:15 pm. On the last day of the month, in Box Elder, sunrise is at 7:27 am and sunset at 4:24 pm MST.

How many hours of sunshine does Box Elder have in December?

The average sunshine duration in December is 6h.

When is the lowest UV index in Box Elder?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Box Elder.

What is the UV index intensity in December in Box Elder?

In December, the average daily maximum UV index in Box Elder is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
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
Box Elder, SD

Average temperature in December - Box Elder, SD
  • Average high temperature in December: 32.5°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).

  • Average low temperature in December: 18.7°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

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Average pressure in December
Box Elder, SD

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Box Elder, SD

Average wind speed in December - Box Elder, SD
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).

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Average humidity in December
Box Elder, SD

Average humidity in December - Box Elder, SD
  • Average humidity in December: 74%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).

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Average rainfall in December
Box Elder, SD

Average rainfall in December - Box Elder, SD
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in December
Box Elder, SD

Average rainfall days in December - Box Elder, SD
  • Average rainfall days in December: 4.8 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).

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Average snowfall in December
Box Elder, SD

Average snowfall in December - Box Elder, SD
  • Average snowfall in December: 2.64"

The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Box Elder, SD

Average snowfall days in December - Box Elder, SD
  • Average snowfall days in December: 8.1 days

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Box Elder, SD

Average daylight in December / Average sunshine in December - Box Elder, SD
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 6h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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Average sunshine days in December
Box Elder, SD

Average sunshine days in December - Box Elder, SD
  • Average sunshine days in December: 19.6 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).

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Average UV index in December
Box Elder, SD

Average UV index in December - Box Elder, SD
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Box Elder, SD

Average cloud cover in December - Box Elder, SD
  • Average cloud cover in December: 36

The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in December
Box Elder, SD

Average visibility in December - Box Elder, SD
  • Average visibility in December: 6mi

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

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Box Elder, South Dakota, USA

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