December Weather forecast - Winter forecast

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

The warm setting sun has its rays spread over the scenic landscape in the colorful town of Deadwood, South Dakota

Weather in December

December, the first month of the winter in Deadwood, is also a subzero cold month, with an average temperature ranging between max 29.7°F (-1.3°C) and min 16.7°F (-8.5°C).

Temperature

The coldest month is December, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 16.7°F (-8.5°C).

Humidity

The average relative humidity in December is 77%.

Rainfall

In Deadwood, during December, the rain falls for 4.2 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Deadwood, during the entire year, the rain falls for 96.1 days and collects up to 14.02" (356mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Deadwood, South Dakota. In December, in Deadwood, it is snowing for 10.1 days. Throughout December, 3.78" (96mm) of snow is accumulated. In Deadwood, during the entire year, snow falls for 66.6 days and aggregates up to 34.53" (877mm) of snow.

Daylight

With an average of 8h and 55min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:10 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:25 pm MST.

Sunshine

In December, the average sunshine in Deadwood is 6h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Deadwood. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 coldest month in Deadwood?

With an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 16.7°F (-8.5°C), December is the coldest month in Deadwood.

What is the temperature in December in Deadwood?

In December, in Deadwood, South Dakota, the average high-temperature is 29.7°F (-1.3°C), and the average low-temperature is 16.7°F (-8.5°C). in July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 82.4°F (28°C).

What is the average humidity in December in Deadwood?

In Deadwood, South Dakota, the average relative humidity in December is 77%.

How much does it rain in Deadwood in December?

In Deadwood, South Dakota, during December, the rain falls for 4.2 days and regularly aggregates up to 0.67" (17mm) of precipitation.

How many days does it snow in December in Deadwood?

In Deadwood, in December, during 10.1 snowfall days, 3.78" (96mm) of snow is typically accumulated.

What is the month with the shortest days in Deadwood?

With an average of 8h and 55min of daylight, December has the shortest days of the year in Deadwood, South Dakota.

What is the average length of the day in December in Deadwood?

In December, the average day length in Deadwood is 8h and 55min.

When are sunrise and sunset in December in Deadwood?

On the first day of December in Deadwood, sunrise is at 7:10 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:25 pm MST.

How long on average sun shines in December in Deadwood?

In December, the average sunshine duration is 6h.

What are the months with the lowest UV index in Deadwood?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December in Deadwood?

In Deadwood, South Dakota, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

41.9°F 5.5°C

29.7°F -1.3°C

30.6°F -0.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.2mph 16.4km/h

10.6mph 17.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

20.5

19.5

17.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Deadwood, SD

Average high temperature in December: 29.7°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (29.7°F).

Average low temperature in December: 16.7°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (15.4°F).

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Average pressure in December
Deadwood, SD

Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Deadwood, SD

Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).

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Average humidity in December
Deadwood, SD

Average humidity in December: 77%

The months with the highest relative humidity are January and February (79%).
The months with the lowest relative humidity are August and September (51%).

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Average rainfall in December
Deadwood, SD

Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in December
Deadwood, SD

Average rainfall days in December: 4.2 days

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is November (2.7 days).

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Average snowfall in December
Deadwood, SD

Average snowfall in December: 3.78"

The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").

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Average snowfall days in December
Deadwood, SD

Average snowfall days in December: 10.1 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in December: 8h and 55min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 55min).

Average sunshine in December: 6h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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Average sunshine days in December
Deadwood, SD

Average sunshine days in December: 19.5 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index in December
Deadwood, SD

Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in December
Deadwood, SD

Average cloud cover in December: 37

The months with the most cloud cover are February and April (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in December
Deadwood, 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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December weather forecast
Deadwood, SD

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