Las Vegas Weather in July

July is the hottest month of the year for Las Vegas, Nevada. Most days the temperature rises well over 100 degrees Fahrenheit (38 °C).

This page gives detailed information on the typical July weather for Las Vegas.

You can jump directly to data and descriptions for:

The numbers here are historical averages based on climate data gathered at the McCarran International Airport, located near the south end of the Las Vegas Strip.

Temperature Weather iconTemperature

104 °F July average high 40 °C
  81 °F July average low 27 °C

In most years, Las Vegas averages a daily maximum temperature for July that's between 102 and 107 degrees Fahrenheit (39 to 42 degrees Celsius). The minimum temperature usually falls between 78 and 84 °F (26 to 29 °C).

July is Las Vegas' hottest month overall, with temperatures peaking on the 19th. That date has a daily high averaging 104.7 °F (40.4 °C) and low of 81.5 °F (27.5 °C).

25 days 100 °F max. or more (38 °C)
1 day 70 °F min. or less (21 °C)

Nearly every day in July heats up to over 90 °F (32 °C) in Las Vegas and most nights stay well above 70 °F (21 °C). July normally never gets weather any cooler than 60 °F (16 °C).

Rainy Weather iconRain

0.4 in total precipitation 10 mm
3 days of rain

Half the time, Las Vegas receives 0.1 to 0.5 inches (1 to 13 mm) of rainfall in July. One in four years has drier weather, while another one in four is wetter.

Sunny Weather iconSun

88 % sunshine
20 days clear skies

The sun's rays reach the ground in Las Vegas during 88 percent of daylight hours on average in July, for a total of 391 hours in the month. Typically on 20 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in July at Las Vegas lasts for 14 hours and 19 minutes a day on average. The longest day of the month is the 1st with 14 hours and 35 minutes of daylight. By the end of the month, the days have shortened to 13:59 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

21 % July average humidity

The relative humidity in Las Vegas during July usually peaks at 29 percent in the morning then drops to 15 percent around mid afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 25 29 26 19 16 15 17 22

Windy Weather iconWind

9.9 mph July wind speed average 15.9 kph

July is a little windier than most other months in Las Vegas.

Stormy Weather iconStorms

1 day rainfall of 0.1 inches (2.5 mm) or more
4 days with thunderstorms in July

About once a decade, Las Vegas receives over an inch (25 mm) of rain in one day during July.


These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals.

Las Vegas Weather
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