January 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 January

Las Vegas greets the New Year with cool temperatures mostly hovering from 38.5°F (3.6°C) to 51.8°F (11°C). A continuation from late December, expect cool but not freezing temperatures. The coldest month of the year in Las Vegas, January often sees a mix of sunny and cloudy days. It is not uncommon to have a dusting of snow, however, it is rare. Therefore, layering up when venturing outdoors is a smart choice.

Temperature

Las Vegas observes an average high-temperature of a still cool 51.8°F (11°C) in January, barely different from 50°F (10°C) in December. The average temperature during January nights is registered at a wintry 38.5°F (3.6°C).

Humidity

January is the most humid month, with an average relative humidity of 48%.

Rainfall

In Las Vegas, in January, it is raining for 4.5 days, with typically 0.55" (14mm) of accumulated precipitation. In Las Vegas, Nevada, 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, during January, snow falls for 0.2 days and regularly aggregates up to 0.04" (1mm) of snow. Throughout the year, there are 0.7 snowfall days, and 0.24" (6mm) of snow is accumulated.

Daylight

In January, the average length of the day is 10h and 2min.
On the first day of the month, sunrise is at 6:51 am and sunset at 4:36 pm. On the last day of January, sunrise is at 6:42 am and sunset at 5:05 pm PST.

Sunshine

The average sunshine in January in Las Vegas is 7.2h.

UV index

In Las Vegas, the average daily maximum UV index in January is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 3 in January leads to these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in January?

January temperatures vary between a high-temperature of 51.8°F (11°C) and a low-temperature of 38.5°F (3.6°C).

What is the most humid month?

January is the most humid month in Las Vegas, with an average relative humidity of 48%.

What is the average humidity in January?

In January, the average relative humidity is 48%.

How much does it rain in January?

In Las Vegas, in January, it is raining for 4.5 days, with typically 0.55" (14mm) of accumulated precipitation.

How much does it snow in January?

In Las Vegas, during January, snow falls for 0.2 days and regularly aggregates up to 0.04" (1mm) of snow.

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

In January, the average day length is 10h and 2min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 6:51 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 5:05 pm PST.

How long on average sun shines in January?

In January, the average sunshine duration is 7.2h.

How high is the UV index in January?

The average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health 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 January
Las Vegas, NV

Average temperature in January - Las Vegas, NV
  • Average high temperature in January: 51.8°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 January: 38.5°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 January
Las Vegas, NV

Average pressure in January - Las Vegas, NV
  • Average pressure in January: 30.14"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 January
Las Vegas, NV

Average wind speed in January - Las Vegas, NV
  • Average wind speed in January: 5.5mph

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 January
Las Vegas, NV

Average humidity in January - Las Vegas, NV
  • Average humidity in January: 48%

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

Average rainfall in January
Las Vegas, NV

Average rainfall in January - Las Vegas, NV
  • Average rainfall in January: 0.55"

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 January
Las Vegas, NV

Average rainfall days in January - Las Vegas, NV
  • Average rainfall days in January: 4.5 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 January
Las Vegas, NV

Average snowfall in January - Las Vegas, NV
  • Average snowfall in January: 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 January
Las Vegas, NV

Average snowfall days in January - Las Vegas, NV
  • Average snowfall days in January: 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 January /
Average sunshine in January
Las Vegas, NV

Average daylight in January / Average sunshine in January - Las Vegas, NV
  • Average daylight in January: 10h and 0min

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 January: 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).

Average sunshine days in January
Las Vegas, NV

Average sunshine days in January - Las Vegas, NV
  • Average sunshine days in January: 24.8 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 January
Las Vegas, NV

Average UV index in January - Las Vegas, NV
  • Average UV index in January: 3

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 January
Las Vegas, NV

Average cloud cover in January - Las Vegas, NV
  • Average cloud cover in January: 18

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 January
Las Vegas, NV

Average visibility in January - Las Vegas, NV
  • Average visibility in January: 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, Nevada, USA

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