December weather forecast and climate
Pierre, SD

The Capitol Dome building in Pierre, South Dakota, set in a beautiful tree park
The Capitol Dome building in Pierre, South Dakota, set in a beautiful tree park

Weather in December

December, the first month of the winter, in Pierre, is also a subzero cold month, with average temperature varying between 16.3°F (-8.7°C) and 28.2°F (-2.1°C).

Temperature

In December, the average high-temperature declines considerably, from a chilly 44.2°F (6.8°C) in November, to a subzero cold 28.2°F (-2.1°C). The average low-temperature, in December, is 16.3°F (-8.7°C).

Humidity

The average relative humidity in Pierre is 82%.

Rainfall

In Pierre, during 2.9 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, in Pierre, there are 98.5 rainfall days, and 13.7" (348mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Pierre. In Pierre, during 8.2 snowfall days, 2.48" (63mm) of snow is typically accumulated. Throughout the year, there are 41.4 snowfall days, and 13.07" (332mm) of snow is accumulated.

Daylight

With an average of 8.9h of daylight, December has the shortest days of the year in Pierre.

Sunshine

In Pierre, South Dakota, the average sunshine in December is 4.9h.

UV index

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Pierre. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 1 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Pierre?

In December, in Pierre, the average high-temperature is 28.2°F (-2.1°C), and the average low-temperature is 16.3°F (-8.7°C).

What is the average humidity in December in Pierre?

In Pierre, the average relative humidity in December is 82%.

How many days does it rain in December in Pierre?

In Pierre, during December, the rain falls for 2.9 days and regularly aggregates up to 0.67" (17mm) of precipitation.

How much does it snow in Pierre in December?

In Pierre, in December, snow falls for 8.2 days, with typically accumulated 2.48" (63mm) of snow.

What is the month with the shortest days in Pierre?

With an average of 8.9h of daylight, December has the shortest days of the year.

How many hours of daylight does Pierre have in December?

In December, the average length of the day in Pierre, South Dakota, is 8.9h.

How many hours of sunshine does Pierre have in December?

In December, the average sunshine in Pierre is 4.9h.

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

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

What is the UV index intensity in December in Pierre?

In Pierre, South Dakota, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in December
Pierre, SD

Average temperature in December - Pierre, SD
  • Average high temperature in December: 28.2°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in December: 16.3°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in December
Pierre, SD

Average pressure in December - Pierre, SD
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.84").

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Average wind speed in December
Pierre, SD

Average wind speed in December - Pierre, SD
  • Average wind speed in December: 10mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are February and August (9.9mph).

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Average humidity in December
Pierre, SD

Average humidity in December - Pierre, SD
  • Average humidity in December: 82%

The month with the highest relative humidity is January (85%).
Months with the lowest relative humidity are August and September (52%).

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Average rainfall in December
Pierre, SD

Average rainfall in December - Pierre, SD
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in December
Pierre, SD

Average rainfall days in December - Pierre, SD
  • Average rainfall days in December: 2.9 days

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is February (2.4 days).

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Average snowfall in December
Pierre, SD

Average snowfall in December - Pierre, SD
  • Average snowfall in December: 2.48"

The month with the highest snowfall is February (3.66").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Pierre, SD

Average snowfall days in December - Pierre, SD
  • Average snowfall days in December: 8.2 days

The month with the highest number of snowfall days is February (10 days).
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
Pierre, SD

Average daylight in December / Average sunshine in December - Pierre, SD
  • Average daylight in December: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in December: 4.9h

The month with the most sunshine is July (Average sunshine: 11.5h).
The month with the least sunshine is January (Average sunshine: 4.6h).

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Average sunshine days in December
Pierre, SD

Average sunshine days in December - Pierre, SD
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in December
Pierre, SD

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

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in December
Pierre, SD

Average cloud cover in December - Pierre, SD
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 50).
Months with the least cloud cover are July and August (Cloud cover 19).

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Average visibility in December
Pierre, SD

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

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

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