December weather forecast
Richmond Heights, SD

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Weather in December

The first month of the winter, December, is still a freezing cold month in Richmond Heights, South Dakota, with an average temperature ranging between max 25°F (-3.9°C) and min 12.7°F (-10.7°C).

Temperature

Richmond Heights in December showcases a distinct temperature shift, moving from an average high of a wintry 41.7°F (5.4°C) in November to a subzero cold 25°F (-3.9°C). During the nights in December, Richmond Heights experiences a consistent average temperature of 12.7°F (-10.7°C).

Humidity

In December, the average relative humidity is 85%.

Rainfall

In Richmond Heights, in December, it is raining for 3.1 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 97.2 rainfall days, and 18.35" (466mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Richmond Heights, during December, snow falls for 11.4 days and regularly aggregates up to 3.43" (87mm) of snow. Throughout the year, there are 54.8 snowfall days, and 19.13" (486mm) of snow is accumulated.

Daylight

With an average of 8h and 48min of daylight, December has the shortest days of the year.
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 8:14 am and sunset at 5:01 pm CST.

Sunshine

The average sunshine in December in Richmond Heights is 4.3h.

UV index

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in Richmond Heights, is 25°F (-3.9°C), while the low-temperature averages to 12.7°F (-10.7°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Richmond Heights, in December, during 3.1 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

How much does it snow in Richmond Heights in December?

In Richmond Heights, in December, snow falls for 11.4 days, with typically accumulated 3.43" (87mm) of snow.

What is the month with the shortest days in Richmond Heights?

The month with the shortest days is December, with an average of 8h and 48min of daylight.

What is the average length of the day in December?

The average day length in December is 8h and 47min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:54 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 8:14 am and sunset at 5:01 pm CST.

How many hours of sunshine does Richmond Heights have in December?

In December, the average sunshine duration is 4.3h.

What is the UV index intensity in December?

In Richmond Heights, the average daily maximum UV index in December 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
Richmond Heights, SD

Average temperature in December - Richmond Heights, 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).

Average pressure in December
Richmond Heights, SD

Average pressure in December - Richmond Heights, 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).

Average wind speed in December
Richmond Heights, SD

Average wind speed in December - Richmond Heights, 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).

Average humidity in December
Richmond Heights, SD

Average humidity in December - Richmond Heights, 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%).

Average rainfall in December
Richmond Heights, SD

Average rainfall in December - Richmond Heights, 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").

Average rainfall days in December
Richmond Heights, SD

Average rainfall days in December - Richmond Heights, 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).

Average snowfall in December
Richmond Heights, SD

Average snowfall in December - Richmond Heights, 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").

Average snowfall days in December
Richmond Heights, SD

Average snowfall days in December - Richmond Heights, 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).

Average daylight in December /
Average sunshine in December
Richmond Heights, SD

Average daylight in December / Average sunshine in December - Richmond Heights, 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).

Average sunshine days in December
Richmond Heights, SD

Average sunshine days in December - Richmond Heights, 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).

Average UV index in December
Richmond Heights, SD

Average UV index in December - Richmond Heights, 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).

Average cloud cover in December
Richmond Heights, SD

Average cloud cover in December - Richmond Heights, 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).

Average visibility in December
Richmond Heights, SD

Average visibility in December - Richmond Heights, 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).

Richmond Heights, South Dakota, USA

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