Las Vegas
Nevada, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Las Vegas, NV

The first month of the winter, December, is also a fresh month in Las Vegas, Nevada, with average temperature fluctuating between 50°F (10°C) and 37.9°F (3.3°C).

Temperature

The coldest month is December, with an average high-temperature of 50°F (10°C) and an average low-temperature of 37.9°F (3.3°C).

Humidity

The average relative humidity is 46%.

Rainfall

In Las Vegas, Nevada, in December, during 5.1 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, in Las Vegas, Nevada, there are 57.5 rainfall days, and 6.02" (153mm) of precipitation is accumulated.

Snowfall

January, February and December are months with snowfall. 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. 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 in Las Vegas, with an average of 9.7h of daylight.

Sunshine

The month with the least sunshine in Las Vegas, Nevada, is December, with an average of 7.1h of sunshine.

UV index

The month with the lowest UV index in Las Vegas is December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 2 transform into the following instructions:
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 Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Las Vegas?

December is the coldest month in Las Vegas, Nevada, with an average high-temperature of 50°F (10°C) and an average low-temperature of 37.9°F (3.3°C).

What is the temperature in December in Las Vegas?

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

What is the average humidity in December in Las Vegas?

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" (17mm) of accumulated precipitation.

When does it start to snow in Las Vegas?

December is the first month it typically snows. 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?

December has the shortest days of the year in Las Vegas, Nevada, with an average of 9.7h of daylight.

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

The average length of the day in December in Las Vegas is 9.7h.

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

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

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

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

What is the month with 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 intensity in December in Las Vegas?

In Las Vegas, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.
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).

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%).

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").

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).

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

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

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).
Months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in December / Average sunshine in December - Las Vegas, NV
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 7.1h

The month with the most sunshine is August (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7.1h).

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

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).