December weather forecast
New Effington, SD

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Weather in December

December, the first month of the winter in New Effington, is still a freezing cold month, with an average temperature fluctuating between 12.6°F (-10.8°C) and 23.5°F (-4.7°C).

Temperature

December marks a distinct drop in the average high-temperature, descending from November's cold 39.6°F (4.2°C) to a freezing cold 23.5°F (-4.7°C). New Effington's nights in December experience an average temperature drop to a frigid cold 12.6°F (-10.8°C).

Humidity

In New Effington, the average relative humidity in December is 86%.

Rainfall

In New Effington, during December, the rain falls for 3.4 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 107.9 rainfall days, and 20.63" (524mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 11.5 days and accumulates 4.29" (109mm) of snow.

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year in New Effington.
On the first day of the month, sunrise is at 7:49 am and sunset at 4:44 pm. On the last day of December, in New Effington, sunrise is at 8:08 am and sunset at 4:53 pm CST.

Sunshine

In December, the average sunshine in New Effington is 4h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 1 in December translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is it in New Effington in December?

The average high-temperature and low-temperature in New Effington during December are 23.5°F (-4.7°C) and 12.6°F (-10.8°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in July is appraised at 86°F (30°C).

What is the average humidity in December in New Effington?

In December, the average relative humidity in New Effington, South Dakota, is 86%.

How much does it rain in New Effington in December?

In New Effington, during December, the rain falls for 3.4 days and regularly aggregates up to 0.94" (24mm) of precipitation.

What is the snowiest month in New Effington?

December is the month with the most snowfall. Snow falls for 11.5 days and accumulates 4.29" (109mm) of snow.

How many days does it snow in December in New Effington?

In New Effington, South Dakota, during December, snow falls for 11.5 days and regularly aggregates up to 4.29" (109mm) of snow.

What is the month with the shortest days in New Effington?

December has the shortest days of the year, with an average of 8h and 42min of daylight.

How many hours of daylight does New Effington have in December?

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

When are sunrise and sunset in December in New Effington?

In December, on the first day of the month, sunrise is at 7:49 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 4:53 pm CST.

How long on average sun shines in December in New Effington?

The average sunshine duration in December in New Effington, South Dakota, is 4h.

When is the lowest UV index in New Effington?

The month with the lowest UV index in New Effington, South Dakota, is December, with an average maximum UV index of 1.

What is the UV index reading in December in New Effington?

In December, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a low health threat 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
New Effington, SD

Average temperature in December - New Effington, SD
  • Average high temperature in December: 23.5°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (19°F).

  • Average low temperature in December: 12.6°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

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Average pressure in December
New Effington, SD

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

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in December
New Effington, SD

Average wind speed in December - New Effington, SD
  • Average wind speed in December: 10.7mph

The windiest months (with the highest average wind speed) are April and October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).

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Average humidity in December
New Effington, SD

Average humidity in December - New Effington, SD
  • Average humidity in December: 86%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is September (65%).

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Average rainfall in December
New Effington, SD

Average rainfall in December - New Effington, SD
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in December
New Effington, SD

Average rainfall days in December - New Effington, SD
  • Average rainfall days in December: 3.4 days

The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (1.6 days).

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Average snowfall in December
New Effington, SD

Average snowfall in December - New Effington, SD
  • Average snowfall in December: 4.29"

The month with the highest snowfall is December (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
New Effington, SD

Average snowfall days in December - New Effington, SD
  • Average snowfall days in December: 11.5 days

The month with the highest number of snowfall days is December (11.5 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
New Effington, SD

Average daylight in December / Average sunshine in December - New Effington, 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 0min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in December
New Effington, SD

Average sunshine days in December - New Effington, SD
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in December
New Effington, SD

Average UV index in December - New Effington, SD
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
New Effington, SD

Average cloud cover in December - New Effington, SD
  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 25).

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Average visibility in December
New Effington, SD

Average visibility in December - New Effington, 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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New Effington, South Dakota, USA

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