December weather forecast
Platte, SD

Weather in December

December, the first month of the winter in Platte, is still a freezing 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 Platte, the average high-temperature in December significantly decreases from a frosty 46.4°F (8°C) in November to a freezing cold 30.4°F (-0.9°C). In December, the average low-temperature is 18.3°F (-7.6°C).

Humidity

In Platte, the average relative humidity in December is 81%.

Rainfall

In Platte, it is raining for 3.1 days, with typically 0.59" (15mm) of accumulated precipitation. In Platte, 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 Platte, it is snowing for 6.5 days. Throughout December, 1.22" (31mm) of snow is accumulated. Throughout the year, there are 32.8 snowfall days, and 8.35" (212mm) of snow is accumulated.

Daylight

With an average of 9h and 2min of daylight, December has the shortest days of the year in Platte.
On the first day of the month, sunrise is at 7:48 am and sunset at 5:00 pm. On the last day of December, sunrise is at 8:07 am and sunset at 5:09 pm CST.

Sunshine

The average sunshine in December is 4.9h.

UV index

The months with the lowest UV index in Platte are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Platte?

In Platte, South Dakota, in December, the average high-temperature is 30.4°F (-0.9°C), and the average low-temperature is 18.3°F (-7.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is appraised at 91.4°F (33°C).

What is the average humidity in December in Platte?

In Platte, South Dakota, the average relative humidity in December is 81%.

How many days does it rain in December in Platte?

In December, the rain falls for 3.1 days. Throughout December, 0.59" (15mm) of precipitation is accumulated.

How many days does it snow in December in Platte?

In December, in Platte, South Dakota, it is snowing for 6.5 days. Throughout December, 1.22" (31mm) of snow is accumulated.

What is the month with the shortest days in Platte?

With an average of 9h and 2min of daylight, December has the shortest days of the year.

How many hours of daylight does Platte have in December?

The average day length in December in Platte, South Dakota, is 9h and 2min.

When is the sunrise / sunset in December in Platte?

On the first day of December, sunrise is at 7:48 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 5:09 pm CST.

How many hours of sunshine does Platte have in December?

In December, the average sunshine duration in Platte is 4.9h.

When is the lowest UV index in Platte?

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 Platte?

The average daily maximum UV index in December is 2. A UV Index reading 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
Platte, SD

Average temperature in December - Platte, 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
Platte, SD

Average pressure in December - Platte, 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
Platte, SD

Average wind speed in December - Platte, 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
Platte, SD

Average humidity in December - Platte, 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
Platte, SD

Average rainfall in December - Platte, 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
Platte, SD

Average rainfall days in December - Platte, 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
Platte, SD

Average snowfall in December - Platte, 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
Platte, SD

Average snowfall days in December - Platte, 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
Platte, SD

Average daylight in December / Average sunshine in December - Platte, SD
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 21min).
The month with the shortest days is December (Average daylight: 9h and 2min).

  • 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
Platte, SD

Average sunshine days in December - Platte, 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
Platte, SD

Average UV index in December - Platte, 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
Platte, SD

Average cloud cover in December - Platte, 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
Platte, SD

Average visibility in December - Platte, 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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