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May Weather in Las Vegas, United States

Last updated: June 24, 2025

In May, the average temperature in Las Vegas, United States is a mild 15°C (59°F). Temperatures can vary widely, dipping to a chilly -3°C (26°F) at night and soaring to a warm 30°C (87°F) during the day. Expect some drizzle, with an average precipitation of 41 mm (1.6 in) over about 7 days. The atmosphere is comfortably humid, with an average humidity of 57%.

May Temperature in Las Vegas

In May in Las Vegas, the average temperature is 15°C (59°F). Maximum temperatures can reach 30°C (87°F) and minimum temperatures can be as low as -3°C (26°F). This variation makes it essential to pack layers for your trip, ensuring you're prepared for both warm days and cooler nights.

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

The chart illustrates May 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, May typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (87°F) and lows dropping to around -3°C (26°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.

May Precipitation in Las Vegas

In Las Vegas in May, the precipitation amount is 41 mm (1.6 in) spread over a duration of 7 days.

May Precipitation Trends in Las Vegas

The chart displays monthly precipitation patterns in Las Vegas, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Las Vegas, May typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec262033354141648039551918
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Las Vegas

In Las Vegas in May, humidity is 57%. With an average temperature of 15°C (59°F), this humidity feels like a refreshing embrace, making it comfortable for traveling while adding a light dampness that keeps the air feeling vibrant and alive.

May Average Humidity in Las Vegas

This chart illustrates the average monthly humidity levels in Las Vegas, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Las Vegas is approximately 57%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Las Vegas

In Las Vegas in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Las Vegas.

Maximum UV Index Levels in Las Vegas for May

The chart shows the monthly maximum UV Index (UVI) for Las Vegas in May, 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 May, the maximum UV index in Las Vegas typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213131211854
Data source: Las Vegas May 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 May 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 May’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 May’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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