December weather forecast
Martin, SD

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Weather in December

December, the first month of the winter in Martin, is still a cold month, with an average temperature varying between 18.9°F (-7.3°C) and 32°F (0°C).

Temperature

December is the coldest month of the year, registering average temperatures as high as 32°F (0°C) and as low as 18.9°F (-7.3°C).

Humidity

In December, the average relative humidity is 75%.

Rainfall

In Martin, during December, the rain falls for 2.8 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Martin, during the entire year, the rain falls for 108 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In December, it is snowing for 7.5 days. Throughout December, 2.87" (73mm) of snow is accumulated. Throughout the year, in Martin, there are 47.3 snowfall days, and 19.76" (502mm) of snow is accumulated.

Daylight

The month with the shortest days in Martin is December, with an average of 9h and 6min of daylight.
On the first day of December in Martin, sunrise is at 6:59 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:21 pm MST.

Sunshine

The average sunshine in December is 5.8h.

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 minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What part of the year is the coldest in Martin?

In Martin, December is known for its average lowest temperatures, reaching a high of 32°F (0°C) and a low of 18.9°F (-7.3°C).

How cold is it in Martin in December?

In December, the average high-temperature and low-temperature are 32°F (0°C) and 18.9°F (-7.3°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 86°F (30°C).

What is the average humidity in December in Martin?

The average relative humidity in December in Martin is 75%.

How much does it rain in Martin in December?

In Martin, in December, it is raining for 2.8 days, with typically 0.71" (18mm) of accumulated precipitation.

How much does it snow in Martin in December?

In Martin, during December, snow falls for 7.5 days and regularly aggregates up to 2.87" (73mm) of snow.

What is the month with the shortest days in Martin?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

What is the average length of the day in December in Martin?

In December, the average day length in Martin, South Dakota, is 9h and 3min.

When is the sunrise / sunset in December in Martin?

On the first day of December in Martin, South Dakota, sunrise is at 6:59 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:21 pm MST.

How long on average sun shines in December in Martin?

The average sunshine duration in December is 5.8h.

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

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

What is the UV index intensity in December in Martin?

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

Average temperature in December - Martin, SD
  • Average high temperature in December: 32°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is December (32°F).

  • Average low temperature in December: 18.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in December
Martin, SD

Average pressure in December - Martin, SD
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Martin, SD

Average wind speed in December - Martin, SD
  • Average wind speed in December: 11.4mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).

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Average humidity in December
Martin, SD

Average humidity in December - Martin, SD
  • Average humidity in December: 75%

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are August and September (51%).

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Average rainfall in December
Martin, SD

Average rainfall in December - Martin, SD
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in December
Martin, SD

Average rainfall days in December - Martin, SD
  • Average rainfall days in December: 2.8 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is December (2.8 days).

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Average snowfall in December
Martin, SD

Average snowfall in December - Martin, SD
  • Average snowfall in December: 2.87"

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Martin, SD

Average snowfall days in December - Martin, SD
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is February (10.3 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
Martin, SD

Average daylight in December / Average sunshine in December - Martin, SD
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

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Average sunshine days in December
Martin, SD

Average sunshine days in December - Martin, SD
  • Average sunshine days in December: 21 days

The month with the most sunshine days is December (21 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in December
Martin, SD

Average UV index in December - Martin, 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
Martin, SD

Average cloud cover in December - Martin, SD
  • Average cloud cover in December: 37

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in December
Martin, SD

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

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