December weather forecast
McLaughlin, SD

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Weather in December

December, the first month of the winter in McLaughlin, is still a freezing cold month, with temperature in the range of an average high of 25.7°F (-3.5°C) and an average low of 14.4°F (-9.8°C).

Temperature

The shift from November to December brings a noticeable decrease in the average high-temperature, dropping from an icy 41.5°F (5.3°C) to a subzero cold 25.7°F (-3.5°C). During the nights in December, McLaughlin experiences a consistent average temperature of 14.4°F (-9.8°C).

Humidity

The average relative humidity in December is 83%.

Rainfall

In McLaughlin, in December, it is raining for 2.7 days, with typically 0.67" (17mm) of accumulated precipitation. In McLaughlin, during the entire year, the rain falls for 89.4 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in McLaughlin. In McLaughlin, in December, during 9.5 snowfall days, 3.39" (86mm) of snow is typically accumulated. In McLaughlin, during the entire year, snow falls for 49.4 days and aggregates up to 19.09" (485mm) of snow.

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year.
On the first day of December in McLaughlin, sunrise is at 7:04 am and sunset at 4:00 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:08 pm MST.

Sunshine

In December, the average sunshine in McLaughlin is 4.5h.

UV index

The months with the lowest UV index in McLaughlin, South Dakota, are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In December, the UV index of 1 transforms 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. Around midday, solar radiation is most harmful; hence, exposure should be limited. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in McLaughlin in December?

McLaughlin in December has an average high-temperature of 25.7°F (-3.5°C) and an average low-temperature of 14.4°F (-9.8°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is computed to be 86°F (30°C).

What is the average humidity in December in McLaughlin?

In McLaughlin, the average relative humidity in December is 83%.

How much does it rain in McLaughlin in December?

In McLaughlin, South Dakota, during December, the rain falls for 2.7 days and regularly aggregates up to 0.67" (17mm) of precipitation.

How much does it snow in McLaughlin in December?

In McLaughlin, South Dakota, in December, during 9.5 snowfall days, 3.39" (86mm) of snow is typically accumulated.

What is the month with the shortest days in McLaughlin?

The month with the shortest days in McLaughlin, South Dakota, is December, with an average of 8h and 42min of daylight.

How many hours of daylight does McLaughlin have in December?

In December, the average day length in McLaughlin is 8h and 44min.

What time are sunrise and sunset in December in McLaughlin?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:00 pm. On the last day of the month, in McLaughlin, South Dakota, sunrise is at 7:24 am and sunset at 4:08 pm MST.

How long on average sun shines in December in McLaughlin?

In McLaughlin, South Dakota, the average sunshine duration in December is 4.5h.

When is the lowest UV index in McLaughlin?

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

What is the UV index reading in December in McLaughlin?

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

Average temperature in December - McLaughlin, SD
  • Average high temperature in December: 25.7°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in December: 14.4°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).

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Average pressure in December
McLaughlin, SD

Average pressure in December - McLaughlin, 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 (29.84"Hg).

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Average wind speed in December
McLaughlin, SD

Average wind speed in December - McLaughlin, SD
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).

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Average humidity in December
McLaughlin, SD

Average humidity in December - McLaughlin, SD
  • Average humidity in December: 83%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).

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Average rainfall in December
McLaughlin, SD

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

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in December
McLaughlin, SD

Average rainfall days in December - McLaughlin, SD
  • Average rainfall days in December: 2.7 days

The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).

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Average snowfall in December
McLaughlin, SD

Average snowfall in December - McLaughlin, SD
  • Average snowfall in December: 3.39"

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
McLaughlin, SD

Average snowfall days in December - McLaughlin, SD
  • Average snowfall days in December: 9.5 days

The month with the highest number of snowfall days is January (11.8 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
McLaughlin, SD

Average daylight in December / Average sunshine in December - McLaughlin, SD
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in December
McLaughlin, SD

Average sunshine days in December - McLaughlin, SD
  • Average sunshine days in December: 20.1 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).

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Average UV index in December
McLaughlin, SD

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

The months with the highest UV index are June, July and August (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
McLaughlin, SD

Average cloud cover in December - McLaughlin, SD
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).

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Average visibility in December
McLaughlin, SD

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

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