December weather forecast
Las Vegas, NV

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A night aerial view of the Las Vegas strip in Nevada, USA
A night aerial view of the Las Vegas strip in Nevada, USA

Weather in December

December in Las Vegas heralds the onset of winter with the return of cooler temperatures. Mimicking weather conditions similar to January, December sees the mercury drop again. This month offers a unique blend of holiday spirit alongside the lively Las Vegas charm. Las Vegas in winter is a dazzling sight with holiday decorations adorning the cityscape. The longer nights are perfect for admiring the beautifully lit landscapes and the twinkling holiday lights.

Temperature

The month of December, characterized by an average high of 50°F (10°C) and a low of 37.9°F (3.3°C), is recognized as the coldest.

Humidity

In December, the average relative humidity in Las Vegas is 46%.

Rainfall

In Las Vegas, during December, the rain falls for 5.1 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Las Vegas, during the entire year, the rain falls for 57.5 days and collects up to 6.02" (153mm) of precipitation.

Snowfall

January, February and December are months with snowfall in Las Vegas, Nevada. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Las Vegas, there are 0.7 snowfall days, and 0.24" (6mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 6:33 am and sunset at 4:26 pm. On the last day of December, in Las Vegas, sunrise is at 6:51 am and sunset at 4:36 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 7.1h of sunshine.

UV index

With an average maximum UV index of 2, December is the month with the lowest UV index in Las Vegas. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 2 during December leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What month is the coldest in Las Vegas?

December is the coldest month of the year in Las Vegas, registering average temperatures as high as 50°F (10°C) and as low as 37.9°F (3.3°C).

What is the average December temperature in Las Vegas?

In Las Vegas, 50°F (10°C) is the average high-temperature and 37.9°F (3.3°C) is the average low-temperature during December.

What is the average humidity in December in Las Vegas?

In December, the average relative humidity in Las Vegas is 46%.

How much does it rain in Las Vegas in December?

In December, the rain falls for 5.1 days. Throughout December, 0.67" (17mm) of precipitation is accumulated.

When does it start to snow in Las Vegas?

December is the first month it typically snows in Las Vegas. Throughout December, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days in Las Vegas?

With an average of 9h and 42min of daylight, December has the shortest days of the year in Las Vegas, Nevada.

What is the average length of the day in December in Las Vegas?

In Las Vegas, the average day length in December is 9h and 45min.

When is the sunrise / sunset in December in Las Vegas?

On the first day of December in Las Vegas, Nevada, sunrise is at 6:33 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:36 pm PST.

What is the month with the least sunshine in Las Vegas?

December has the least sunshine of the year in Las Vegas, with an average of 7.1h of sunshine.

How many hours of sunshine does Las Vegas have in December?

In December, the average sunshine duration in Las Vegas is 7.1h.

When is the lowest UV index in Las Vegas?

The month with the lowest UV index is December, with an average maximum UV index of 2.

How high is the UV index in December in Las Vegas?

In December, the average daily maximum UV index in Las Vegas, Nevada, is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Las Vegas, NV

Average temperature in December - Las Vegas, NV
  • Average high temperature in December: 50°F

The warmest month (with the highest average high temperature) is July (97.3°F).
The month with the lowest average high temperature is December (50°F).

  • Average low temperature in December: 37.9°F

The month with the highest average low temperature is July (77.7°F).
The coldest month (with the lowest average low temperature) is December (37.9°F).

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Average pressure in December
Las Vegas, NV

Average pressure in December - Las Vegas, NV
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.76"Hg).

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Average wind speed in December
Las Vegas, NV

Average wind speed in December - Las Vegas, NV
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).

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Average humidity in December
Las Vegas, NV

Average humidity in December - Las Vegas, NV
  • Average humidity in December: 46%

The month with the highest relative humidity is January (48%).
The month with the lowest relative humidity is June (15%).

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Average rainfall in December
Las Vegas, NV

Average rainfall in December - Las Vegas, NV
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Las Vegas, NV

Average rainfall days in December - Las Vegas, NV
  • Average rainfall days in December: 5.1 days

The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is June (1.4 days).

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Average snowfall in December
Las Vegas, NV

Average snowfall in December - Las Vegas, NV
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Las Vegas, NV

Average snowfall days in December - Las Vegas, NV
  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in December /
Average sunshine in December
Las Vegas, NV

Average daylight in December / Average sunshine in December - Las Vegas, NV
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 7h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).

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Average sunshine days in December
Las Vegas, NV

Average sunshine days in December - Las Vegas, NV
  • Average sunshine days in December: 24 days

The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is July (18.1 days).

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Average UV index in December
Las Vegas, NV

Average UV index in December - Las Vegas, NV
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 8).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in December
Las Vegas, NV

Average cloud cover in December - Las Vegas, NV
  • Average cloud cover in December: 20

The month with the most cloud cover is December (Cloud cover 20).
The months with the least cloud cover are June and August (Cloud cover 6).

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Average visibility in December
Las Vegas, NV

Average visibility in December - Las Vegas, NV
  • 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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Las Vegas, Nevada, USA

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