December weather forecast
Wagner, SD

Weather in December

December, the first month of the winter in Wagner, is also a subzero cold month, with temperature in the range of an average low of 18.3°F (-7.6°C) and an average high of 30.4°F (-0.9°C).

Temperature

In December, the average high-temperature significantly decreases from a chilly 46.4°F (8°C) in November to a subzero cold 30.4°F (-0.9°C). The average low-temperature, in Wagner, is 18.3°F (-7.6°C).

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Wagner, during 3.1 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Wagner, during the entire year, the rain falls for 104.1 days and collects up to 14.29" (363mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In December, in Wagner, it is snowing for 6.5 days. Throughout December, 1.22" (31mm) of snow is accumulated. In Wagner, during the entire year, snow falls for 32.8 days and aggregates up to 8.35" (212mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 4min of daylight.
On the first day of December, sunrise is at 7:45 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 8:04 am and sunset at 5:07 pm CST.

Sunshine

The average sunshine in December is 4.9h.

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 reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Wagner?

The average relative humidity in December in Wagner, South Dakota, is 81%.

How much does it rain in Wagner in December?

In Wagner, South Dakota, in December, during 3.1 rainfall days, 0.59" (15mm) of precipitation is typically accumulated.

How many days does it snow in December in Wagner?

In Wagner, South Dakota, during December, snow falls for 6.5 days and regularly aggregates up to 1.22" (31mm) of snow.

What is the month with the shortest days in Wagner?

December has the shortest days of the year, with an average of 9h and 4min of daylight.

How many hours of daylight does Wagner have in December?

In December, the average day length in Wagner is 9h and 4min.

What time are sunrise and sunset in December in Wagner?

In December, on the first day of the month, sunrise is at 7:45 am and sunset at 4:59 pm. On the last day of the month, in Wagner, sunrise is at 8:04 am and sunset at 5:07 pm CST.

How long on average sun shines in December in Wagner?

The average sunshine duration in December in Wagner, South Dakota, is 4.9h.

When is the lowest UV index in Wagner?

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

What is the UV index intensity in December in Wagner?

In December, the average daily maximum UV index in Wagner is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Wagner, SD

Average temperature in December - Wagner, SD
  • Average high temperature in December: 30.4°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in December: 18.3°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure in December
Wagner, SD

Average pressure in December - Wagner, SD
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
Wagner, SD

Average wind speed in December - Wagner, SD
  • Average wind speed in December: 10.3mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

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Average humidity in December
Wagner, SD

Average humidity in December - Wagner, SD
  • Average humidity in December: 81%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).

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Average rainfall in December
Wagner, SD

Average rainfall in December - Wagner, SD
  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").

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Average rainfall days in December
Wagner, SD

Average rainfall days in December - Wagner, SD
  • Average rainfall days in December: 3.1 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall in December
Wagner, SD

Average snowfall in December - Wagner, SD
  • Average snowfall in December: 1.22"

The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Wagner, SD

Average snowfall days in December - Wagner, SD
  • Average snowfall days in December: 6.5 days

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Wagner, SD

Average daylight in December / Average sunshine in December - Wagner, SD
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 19min).
The month with the shortest days is December (Average daylight: 9h and 4min).

  • Average sunshine in December: 4h and 54min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in December
Wagner, SD

Average sunshine days in December - Wagner, SD
  • Average sunshine days in December: 22.5 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index in December
Wagner, SD

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

The months with the highest UV index are June, July and August (UV index 6).
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
Wagner, SD

Average cloud cover in December - Wagner, SD
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).

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Average visibility in December
Wagner, SD

Average visibility in December - Wagner, 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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