December weather forecast
Clark, SD

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Weather in December

December, the first month of the winter in Clark, is still a freezing cold month, with temperature in the range of an average low of 12.4°F (-10.9°C) and an average high of 23.7°F (-4.6°C).

Temperature

The shift from November to December sees a distinct decrease in the average high-temperature, dropping from a cold 40.1°F (4.5°C) to a freezing cold 23.7°F (-4.6°C). An average nighttime temperature of 12.4°F (-10.9°C) is witnessed throughout December.

Humidity

The average relative humidity in December in Clark, South Dakota, is 87%.

Rainfall

In Clark, in December, it is raining for 3.5 days, with typically 0.75" (19mm) of accumulated precipitation. In Clark, during the entire year, the rain falls for 112.3 days and collects up to 18.78" (477mm) of precipitation.

Snowfall

Months with snowfall in Clark are January through May, October through December. The months with the most snowfall are January and December, with an average 3.74" (95mm) of accumulated snow.

Daylight

The month with the shortest days in Clark is December, with an average of 8h and 54min of daylight.
On the first day of December in Clark, sunrise is at 7:49 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 4:59 pm CST.

Sunshine

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

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Clark. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.
Note: In December, the maximum UV index of 1 translates into these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

How cold is December in Clark?

The average high-temperature, in December, in Clark, is 23.7°F (-4.6°C), while the average low-temperature is 12.4°F (-10.9°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is appraised at 84.2°F (29°C).

What is the average humidity in December in Clark?

The average relative humidity in December is 87%.

How many days does it rain in December in Clark?

In Clark, in December, it is raining for 3.5 days, with typically 0.75" (19mm) of accumulated precipitation.

When does it snow the most in Clark?

The months with the most snowfall in Clark are January and December, with an average 3.74" (95mm) of accumulated snow.

How many days does it snow in December in Clark?

In Clark, South Dakota, in December, during 13 snowfall days, 3.74" (95mm) of snow is typically accumulated.

What is the month with the shortest days in Clark?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Clark, South Dakota.

How many hours of daylight does Clark have in December?

In December, the average day length in Clark is 8h and 51min.

When are sunrise and sunset in December in Clark?

In December, on the first day of the month, sunrise is at 7:49 am and sunset at 4:51 pm. On the last day of the month, in Clark, South Dakota, sunrise is at 8:08 am and sunset at 4:59 pm CST.

How long on average sun shines in December in Clark?

The average sunshine duration in December in Clark is 4h.

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

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

How high is the UV index in December in Clark?

In Clark, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk 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
Clark, SD

Average temperature in December - Clark, SD
  • Average high temperature in December: 23.7°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).

  • Average low temperature in December: 12.4°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).

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Average pressure in December
Clark, SD

Average pressure in December - Clark, 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
Clark, SD

Average wind speed in December - Clark, SD
  • Average wind speed in December: 11mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

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Average humidity in December
Clark, SD

Average humidity in December - Clark, SD
  • Average humidity in December: 87%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).

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Average rainfall in December
Clark, SD

Average rainfall in December - Clark, SD
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").

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Average rainfall days in December
Clark, SD

Average rainfall days in December - Clark, SD
  • Average rainfall days in December: 3.5 days

The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).

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Average snowfall in December
Clark, SD

Average snowfall in December - Clark, SD
  • Average snowfall in December: 3.74"

The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Clark, SD

Average snowfall days in December - Clark, SD
  • Average snowfall days in December: 13 days

The month with the highest number of snowfall days is January (14.4 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
Clark, SD

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in December
Clark, SD

Average sunshine days in December - Clark, SD
  • Average sunshine days in December: 16.3 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in December
Clark, SD

Average UV index in December - Clark, 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
Clark, SD

Average cloud cover in December - Clark, SD
  • Average cloud cover in December: 59

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Clark, SD

Average visibility in December - Clark, 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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Clark, South Dakota, USA

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