December weather forecast
Lantry, SD

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Weather in December

The first month of the winter, December, is also a subzero cold month in Lantry, South Dakota, with temperature in the range of an average high of 28.2°F (-2.1°C) and an average low of 16.2°F (-8.8°C).

Temperature

As December arrives, a noticeable drop in the average high-temperature is witnessed, moving from a chilly 43.3°F (6.3°C) in November to a freezing cold 28.2°F (-2.1°C). Lantry cools down to an average low-temperature of 16.2°F (-8.8°C) throughout the month of December.

Humidity

The average relative humidity in December is 80%.

Rainfall

In Lantry, South Dakota, in December, during 4 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Lantry, during the entire year, the rain falls for 99.7 days and collects up to 16.06" (408mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Lantry, during December, snow falls for 10.4 days and regularly aggregates up to 3.31" (84mm) of snow. Throughout the year, in Lantry, South Dakota, there are 58.3 snowfall days, and 22.95" (583mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 48min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 4:05 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:14 pm MST.

Sunshine

The average sunshine in December in Lantry, South Dakota, is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Frequently asked questions

How cold is it in Lantry in December?

In Lantry, in December, the average high-temperature is 28.2°F (-2.1°C), and the average low-temperature is 16.2°F (-8.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 86°F (30°C).

What is the average humidity in December in Lantry?

In December, the average relative humidity in Lantry, South Dakota, is 80%.

How many days does it rain in December in Lantry?

In Lantry, in December, it is raining for 4 days, with typically 0.83" (21mm) of accumulated precipitation.

How many days does it snow in December in Lantry?

In December, in Lantry, South Dakota, it is snowing for 10.4 days. Throughout December, 3.31" (84mm) of snow is accumulated.

What is the month with the shortest days in Lantry?

With an average of 8h and 48min of daylight, December has the shortest days of the year.

How many hours of daylight does Lantry have in December?

In December, the average day length in Lantry, South Dakota, is 8h and 50min.

When is the sunrise / sunset in December in Lantry?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:14 pm MST.

How many hours of sunshine does Lantry have in December?

In December, the average sunshine duration in Lantry, South Dakota, is 5.1h.

When is the lowest UV index in Lantry?

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

What is the UV index reading in December in Lantry?

The average daily maximum UV index in December in Lantry is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe 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
Lantry, SD

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

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in December: 16.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure in December
Lantry, SD

Average pressure in December - Lantry, SD
  • Average pressure in December: 30.14"Hg

The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Lantry, SD

Average wind speed in December - Lantry, SD
  • Average wind speed in December: 10.9mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).

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Average humidity in December
Lantry, SD

Average humidity in December - Lantry, SD
  • Average humidity in December: 80%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).

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Average rainfall in December
Lantry, SD

Average rainfall in December - Lantry, SD
  • Average rainfall in December: 0.83"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in December
Lantry, SD

Average rainfall days in December - Lantry, SD
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).

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Average snowfall in December
Lantry, SD

Average snowfall in December - Lantry, SD
  • Average snowfall in December: 3.31"

The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Lantry, SD

Average snowfall days in December - Lantry, SD
  • Average snowfall days in December: 10.4 days

The month with the highest number of snowfall days is January (12.3 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
Lantry, SD

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

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 5h and 1min

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 48min).

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Average sunshine days in December
Lantry, SD

Average sunshine days in December - Lantry, SD
  • Average sunshine days in December: 17.3 days

The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).

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Average UV index in December
Lantry, SD

Average UV index in December - Lantry, SD
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
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
Lantry, SD

Average cloud cover in December - Lantry, SD
  • Average cloud cover in December: 47

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
Lantry, SD

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

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