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January Weather in Las Vegas, United States

Last updated: June 24, 2025

In January, the average temperature in Las Vegas, United States hovers around 0°C (32°F), with a chilly minimum dipping to -20°C (-3°F) and a pleasant maximum reaching 17°C (62°F). During this month, expect 26 mm (1.0 in) of precipitation spread over 4 days, contributing to an average humidity level of 78%. Stay prepared for a mix of cold air and occasional rain!

January Temperature in Las Vegas

In January in Las Vegas, the average temperature is 0°C (32°F). Maximums can reach 17°C (62°F), while minimums can drop as low as -20°C (-3°F). Be sure to pack layers to adapt to the wide temperature range while exploring the area.

January Weather in Las Vegas: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Las Vegas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Vegas, January typically has an average temperature of 0°C (32°F), with highs reaching up to 17°C (62°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec323543505968716864514335
Data source: Temperature data for Las Vegas generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Las Vegas

In Las Vegas in January, the precipitation amount is 26 mm (1.0 in) over the course of 4 days.

January Precipitation Trends in Las Vegas

The chart displays monthly precipitation patterns in Las Vegas, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Las Vegas, January typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec262033354141648039551918
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Las Vegas

In Las Vegas in January, humidity is 78%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that lingers in the air, making travel uncomfortable as it clings to your skin and seeps into your bones, creating an atmosphere that's both damp and frosty.

January Average Humidity in Las Vegas

This chart illustrates the average monthly humidity levels in Las Vegas, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Las Vegas is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%66%60%57%55%57%65%72%78%81%79%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Las Vegas

In Las Vegas in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Las Vegas.

Maximum UV Index Levels in Las Vegas for January

The chart shows the monthly maximum UV Index (UVI) for Las Vegas in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Las Vegas typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213131211854
Data source: Las Vegas January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Las Vegas Compares to Other Months

Weather in Las Vegas varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Las Vegas, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Las Vegas, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)26 mm (1.0 inches)78%moderate
February Weather1°C (35°F)20 mm (0.8 inches)79%high
March Weather6°C (43°F)33 mm (1.3 inches)66%very high
April Weather10°C (50°F)35 mm (1.4 inches)60%extreme
May Weather15°C (59°F)41 mm (1.6 inches)57%extreme
June Weather20°C (69°F)41 mm (1.6 inches)55%extreme
July Weather21°C (71°F)64 mm (2.5 inches)56%extreme
August Weather20°C (69°F)80 mm (3.1 inches)65%extreme
September Weather18°C (64°F)39 mm (1.6 inches)72%extreme
October Weather11°C (51°F)55 mm (2.2 inches)78%very high
November Weather6°C (43°F)19 mm (0.8 inches)81%moderate
December Weather2°C (35°F)18 mm (0.7 inches)79%moderate

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