December weather forecast
Rudolph, SD

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Weather in December

December, the first month of the winter in Rudolph, is still a freezing cold month, with an average temperature fluctuating between 25°F (-3.9°C) and 12.7°F (-10.7°C).

Temperature

As November gives way to December, the average high-temperature displays a considerable decrease, falling from an icy 41.7°F (5.4°C) to a freezing cold 25°F (-3.9°C). During December, the nighttime temperature averages of 12.7°F (-10.7°C).

Humidity

The average relative humidity in December in Rudolph is 85%.

Rainfall

In December, in Rudolph, South Dakota, the rain falls for 3.1 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. Throughout the year, in Rudolph, South Dakota, there are 97.2 rainfall days, and 18.35" (466mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Rudolph. In December, it is snowing for 11.4 days. Throughout December, 3.43" (87mm) of snow is accumulated. In Rudolph, during the entire year, snow falls for 54.8 days and aggregates up to 19.13" (486mm) of snow.

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 7:54 am and sunset at 4:52 pm. On the last day of December, sunrise is at 8:13 am and sunset at 5:01 pm CST.

Sunshine

The average sunshine in December is 4.3h.

UV index

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 2 in December translates into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

How cold is it in Rudolph in December?

An average high-temperature, in December, in Rudolph, is 25°F (-3.9°C) and the average low-temperature is 12.7°F (-10.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in December in Rudolph?

In Rudolph, the average relative humidity in December is 85%.

How many days does it rain in December in Rudolph?

In Rudolph, during December, the rain falls for 3.1 days and regularly aggregates up to 0.87" (22mm) of precipitation.

How much does it snow in Rudolph in December?

In Rudolph, during December, snow falls for 11.4 days and regularly aggregates up to 3.43" (87mm) of snow.

What is the month with the shortest days in Rudolph?

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

How many hours of daylight does Rudolph have in December?

In Rudolph, South Dakota, the average day length in December is 8h and 48min.

What time are sunrise and sunset in December in Rudolph?

In December, on the first day of the month, sunrise is at 7:54 am and sunset at 4:52 pm. On the last day of the month, in Rudolph, South Dakota, sunrise is at 8:13 am and sunset at 5:01 pm CST.

How many hours of sunshine does Rudolph have in December?

In December, the average sunshine duration in Rudolph is 4.3h.

What is the UV index reading in December in Rudolph?

The average daily maximum UV index in December in Rudolph, South Dakota, is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to 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
Rudolph, SD

Average temperature in December - Rudolph, SD
  • Average high temperature in December: 25°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in December: 12.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

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Average pressure in December
Rudolph, SD

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

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
Rudolph, SD

Average wind speed in December - Rudolph, SD
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

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Average humidity in December
Rudolph, SD

Average humidity in December - Rudolph, SD
  • Average humidity in December: 85%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).

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Average rainfall in December
Rudolph, SD

Average rainfall in December - Rudolph, SD
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in December
Rudolph, SD

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

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).

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Average snowfall in December
Rudolph, SD

Average snowfall in December - Rudolph, SD
  • Average snowfall in December: 3.43"

The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Rudolph, SD

Average snowfall days in December - Rudolph, SD
  • Average snowfall days in December: 11.4 days

The month with the highest number of snowfall days is January (13 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
Rudolph, SD

Average daylight in December / Average sunshine in December - Rudolph, 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: 4h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in December
Rudolph, SD

Average sunshine days in December - Rudolph, SD
  • Average sunshine days in December: 18.9 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).

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Average UV index in December
Rudolph, SD

Average UV index in December - Rudolph, 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 and November (UV index 1).

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Average cloud cover in December
Rudolph, SD

Average cloud cover in December - Rudolph, SD
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).

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Average visibility in December
Rudolph, SD

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

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