December weather forecast
Las Vegas, NM

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Weather in December

December completes the seasonal cycle, bringing Las Vegas, New Mexico firmly into winter’s hold. The average high drops to 42.1°F (5.6°C), in stark contrast with November's 52.5°F (11.4°C). Snowfall increases up to 4.8" (122mm), offering a wintry landscape. Despite the cold, the holiday spirit and festive decorations make December a charming month in Las Vegas.

Temperature

With an average high-temperature of 42.1°F (5.6°C) and an average low-temperature of 23.9°F (-4.5°C), December is the coldest month in Las Vegas.

Humidity

The months with the highest humidity in Las Vegas are January and December, with an average relative humidity of 61%.

Rainfall

In Las Vegas, in December, during 4.3 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Las Vegas, during the entire year, the rain falls for 76.1 days and collects up to 9.17" (233mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 7.9 days. Throughout December, 4.8" (122mm) of snow is accumulated. Throughout the year, there are 34.6 snowfall days, and 21.57" (548mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 6:52 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:10 am and sunset at 4:58 pm MST.

Sunshine

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

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in Las Vegas?

In Las Vegas, December is the coldest month, with temperatures averaging a high of 42.1°F (5.6°C) and a low of 23.9°F (-4.5°C).

How cold is it in Las Vegas in December?

In Las Vegas, 42.1°F (5.6°C) is the average high-temperature and 23.9°F (-4.5°C) is the average low-temperature during December. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 82.4°F (28°C).

What are the most humid months in Las Vegas?

The months with the highest humidity in Las Vegas, New Mexico, are January and December, with an average relative humidity of 61%.

What is the average humidity in December in Las Vegas?

In December, the average relative humidity in Las Vegas, New Mexico, is 61%.

How many days does it rain in December in Las Vegas?

In Las Vegas, in December, during 4.3 rainfall days, 0.63" (16mm) of precipitation is typically accumulated.

How much does it snow in Las Vegas in December?

In December, in Las Vegas, it is snowing for 7.9 days. Throughout December, 4.8" (122mm) of snow is accumulated.

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

December has the shortest days of the year, with an average of 9h and 48min of daylight.

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

In Las Vegas, the average day length in December is 9h and 48min.

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

On the first day of December, sunrise is at 6:52 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:58 pm MST.

How long on average sun shines in December in Las Vegas?

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

When is the lowest UV index in Las Vegas?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Las Vegas, New Mexico.

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

In December, the average daily maximum UV index in Las Vegas, New Mexico, is 2. A UV Index reading of 2, and below, represents a low health risk 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
Las Vegas, NM

Average temperature in December - Las Vegas, NM
  • Average high temperature in December: 42.1°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (42.1°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).

Average pressure in December
Las Vegas, NM

Average pressure in December - Las Vegas, NM
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is April (29.87"Hg).

Average wind speed in December
Las Vegas, NM

Average wind speed in December - Las Vegas, NM
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).

Average humidity in December
Las Vegas, NM

Average humidity in December - Las Vegas, NM
  • Average humidity in December: 61%

The months with the highest relative humidity are January and December (61%).
The months with the lowest relative humidity are April and June (37%).

Average rainfall in December
Las Vegas, NM

Average rainfall in December - Las Vegas, NM
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is November (0.47").

Average rainfall days in December
Las Vegas, NM

Average rainfall days in December - Las Vegas, NM
  • Average rainfall days in December: 4.3 days

The month with the highest number of rainy days is July (11.5 days).
The month with the least rainy days is November (2.6 days).

Average snowfall in December
Las Vegas, NM

Average snowfall in December - Las Vegas, NM
  • Average snowfall in December: 4.8"

The month with the highest snowfall is January (5.04").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Las Vegas, NM

Average snowfall days in December - Las Vegas, NM
  • Average snowfall days in December: 7.9 days

The month with the highest number of snowfall days is December (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Las Vegas, NM
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 7h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The months with the least sunshine are January and February (Average sunshine: 7h and 0min).

Average sunshine days in December
Las Vegas, NM

Average sunshine days in December - Las Vegas, NM
  • Average sunshine days in December: 21.8 days

The month with the most sunshine days is November (24.6 days).
The month with the least sunshine days is July (17.3 days).

Average UV index in December
Las Vegas, NM

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

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

Average cloud cover in December
Las Vegas, NM

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

The months with the most cloud cover are February, July and December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 13).

Average visibility in December
Las Vegas, NM

Average visibility in December - Las Vegas, NM
  • 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).

Las Vegas, New Mexico, USA

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