December weather forecastLas Vegas, NV
December
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
Las Vegas reaches its lowest average temperatures in December, measuring 50°F (10°C) at the peak and 37.9°F (3.3°C) at the lowest.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
Months with snowfall are January, February and December. 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. In Las Vegas, during the entire year, snow falls for 0.7 days and aggregates up to 0.24" (6mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of December, 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.
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. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December translates into the following guidance:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 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).
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).
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").
The 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).
The 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: 9h and 42min
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 6min
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).
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).
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).
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).
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).
