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 coldest period in Las Vegas tends to be December, when average temperatures fluctuate between a high of 50°F and a low of 37.9°F.

Humidity

The average relative humidity in December is 46%.

Rainfall

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

Snowfall

Months with snowfall in Las Vegas are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.04" of snow. In Las Vegas, during the entire year, snow falls for 0.7 days and aggregates up to 0.24" of snow.

Daylight

The month with the shortest days in Las Vegas is December, with an average of 9h and 42min of daylight.
On the first day of December in Las Vegas, 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 4:35 pm PST.

Sunshine

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

UV index

December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
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. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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FAQ

What time of the year is the coldest in Las Vegas?

In Las Vegas, the lowest temperatures are generally noted in December, averaging a high of 50°F and a low of 37.9°F.

What are the temperatures in Las Vegas in December?

Las Vegas in December has an average high-temperature of 50°F and an average low-temperature of 37.9°F.

What is the average humidity in December in Las Vegas?

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

How much does it rain in Las Vegas in December?

In Las Vegas, in December, it is raining for 5.1 days, with typically 0.67" of accumulated precipitation.

When does it start to snow in Las Vegas?

December is the first month it typically snows in Las Vegas, Nevada. Throughout December, in the average 0.2 snowfall days, it receives 0.04" 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.

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

The average day length in December in Las Vegas, Nevada, is 9h and 45min.

When are sunrise and sunset in December in Las Vegas?

In December, on the first day of the month, sunrise is at 6:33 am and sunset at 4:26 pm. On the last day of the month, in Las Vegas, Nevada, sunrise is at 6:51 am and sunset at 4:35 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 long on average sun shines in December in Las Vegas?

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

When is the lowest UV index in Las Vegas?

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

What is the UV index reading in December in Las Vegas?

In December, the average daily maximum UV index in Las Vegas is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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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