December weather forecast
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 still a freezing cold month, with an average temperature ranging between max 28.2°F (-2.1°C) and min 16.3°F (-8.7°C).

Temperature

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

Humidity

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

Rainfall

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

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 8h and 55min of daylight.
On the first day of the month, sunrise is at 7:57 am and sunset at 5:03 pm. On the last day of December, sunrise is at 8:17 am and sunset at 5:11 pm CST.

Sunshine

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. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Pierre?

In Pierre, in December, the average high-temperature is 28.2°F (-2.1°C), and the average low-temperature is 16.3°F (-8.7°C). in August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 87.8°F (31°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, South Dakota, in December, during 2.9 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How many days does it snow in December in Pierre?

In Pierre, in December, during 8.2 snowfall days, 2.48" (63mm) of snow is typically accumulated.

What is the month with the shortest days in Pierre?

December has the shortest days of the year in Pierre, with an average of 8h and 55min of daylight.

How many hours of daylight does Pierre have in December?

In Pierre, the average day length in December is 8h and 55min.

What time are sunrise and sunset in December in Pierre?

In December, on the first day of the month, sunrise is at 7:57 am and sunset at 5:03 pm. On the last day of the month, in Pierre, South Dakota, sunrise is at 8:17 am and sunset at 5:11 pm CST.

How many hours of sunshine does Pierre have in December?

The average sunshine duration in December in Pierre is 4.9h.

What is the month with the lowest UV index in Pierre?

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

How high is the UV index in December in Pierre?

The average daily maximum UV index in December in Pierre is 1. A UV Index estimate of 2, and below, represents a low health threat from exposure to the Sun's 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
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"Hg

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

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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%).
The 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").
The 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).
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
Pierre, SD

Average daylight in December / Average sunshine in December - Pierre, SD
  • Average daylight in December: 8h and 55min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

  • Average sunshine in December: 4h and 54min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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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).
The 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).
The 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

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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