December weather forecast
Walker, SD

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Weather in December

December, the first month of the winter in Walker, is also a subzero cold month, with an average temperature ranging between min 14.4°F (-9.8°C) and max 25.7°F (-3.5°C).

Temperature

Walker's weather experiences a significant temperature drop with the arrival of December, falling from an icy 41.5°F (5.3°C) in November to a subzero cold 25.7°F (-3.5°C). Walker experiences a mean temperature of 14.4°F (-9.8°C) during December nights.

Humidity

In Walker, the average relative humidity in December is 83%.

Rainfall

In Walker, during December, the rain falls for 2.7 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Walker, during the entire year, the rain falls for 89.4 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

Months with snowfall in Walker are January through May, October through December. In December, it is snowing for 9.5 days. Throughout December, 3.39" (86mm) of snow is accumulated. Throughout the year, there are 49.4 snowfall days, and 19.09" (485mm) of snow is accumulated.

Daylight

The month with the shortest days in Walker is December, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 4:01 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:09 pm MST.

Sunshine

In December, the average sunshine is 4.5h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In Walker, 25.7°F (-3.5°C) is the average high-temperature and 14.4°F (-9.8°C) is the average low-temperature during December. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December in Walker is 83%.

How much does it rain in December?

In Walker, in December, during 2.7 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How much does it snow in December?

In Walker, in December, during 9.5 snowfall days, 3.39" (86mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 42min of daylight.

How many hours of daylight does Walker have in December?

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

When is the sunrise / sunset in December in Walker?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:01 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:09 pm MST.

How many hours of sunshine does Walker have in December?

The average sunshine duration in December is 4.5h.

When is the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index reading in December in Walker?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Walker, SD

Average temperature in December - Walker, SD
  • Average high temperature in December: 25.7°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in December: 14.4°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).

Average pressure in December
Walker, SD

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

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in December
Walker, SD

Average wind speed in December - Walker, SD
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).

Average humidity in December
Walker, SD

Average humidity in December - Walker, SD
  • Average humidity in December: 83%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).

Average rainfall in December
Walker, SD

Average rainfall in December - Walker, SD
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in December
Walker, SD

Average rainfall days in December - Walker, SD
  • Average rainfall days in December: 2.7 days

The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).

Average snowfall in December
Walker, SD

Average snowfall in December - Walker, SD
  • Average snowfall in December: 3.39"

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Walker, SD

Average snowfall days in December - Walker, SD
  • Average snowfall days in December: 9.5 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Walker, 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 3min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Walker, SD

Average sunshine days in December - Walker, SD
  • Average sunshine days in December: 20.1 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).

Average UV index in December
Walker, SD

Average UV index in December - Walker, SD
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Walker, SD

Average cloud cover in December - Walker, SD
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).

Average visibility in December
Walker, SD

Average visibility in December - Walker, 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).

Walker, South Dakota, USA

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