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Summer Weather in Las Vegas Nevada, United States

Daily high temperatures increase by 4°F, from 95°F to 99°F, rarely falling below 84°F or exceeding 111°F. The highest daily average high temperature is 105°F on July 14.

Daily low temperatures increase by 6°F, from 70°F to 76°F, rarely falling below 61°F or exceeding 87°F. The highest daily average low temperature is 80°F on July 21.

For reference, on July 12, the hottest day of the year, temperatures in Las Vegas typically range from 80°F to 105°F, while on December 25, the coldest day of the year, they range from 38°F to 56°F.

Average High and Low Temperature in the Summer in Las Vegas

Average High and Low Temperature in the Summer in Las VegasJunJulAug50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°F110°F110°F115°F115°FSpringFallJul 12105°FJul 12105°F80°F80°FJun 195°FJun 195°F70°F70°FAug 3199°FAug 3199°F76°F76°FAug 1104°FAug 1104°F80°F80°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average summer temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in the Summer in Las Vegas

Average Hourly Temperature in the Summer in Las VegasJunJulAug12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSpringFallNowNowcoolcomfortablecomfortablewarmwarmhothotswelteringcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Béchar, Algeria (6,060 miles away) and Subaykhān, Syria (7,295 miles) are the far-away foreign places with temperatures most similar to Las Vegas (view comparison).

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The summer in Las Vegas experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 20% to 14%. The lowest chance of overcast or mostly cloudy conditions is 12% on June 20.

The clearest day of the summer is June 20, with clear, mostly clear, or partly cloudy conditions 88% of the time.

For reference, on February 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 39%, while on June 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 88%.

Cloud Cover Categories in the Summer in Las Vegas

Cloud Cover Categories in the Summer in Las VegasJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFallFeb 2361%Feb 2361%Jun 180%Jun 180%Aug 3186%Aug 3186%Jul 186%Jul 186%Aug 182%Aug 182%NowNowclearmostly clearovercastpartly cloudymostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Las Vegas, the chance of a wet day over the course of the summer is increasing, starting the season at 2% and ending it at 8%.

For reference, the year's highest daily chance of a wet day is 13% on February 22, and its lowest chance is 1% on June 15.

Probability of Precipitation in the Summer in Las Vegas

Probability of Precipitation in the Summer in Las VegasJunJulAug0%0%1%1%2%2%3%3%4%4%5%5%6%6%7%7%8%8%9%9%10%10%11%11%SpringFallJul 2710%Jul 2710%Jun 121%Jun 121%Aug 318%Aug 318%Jul 14%Jul 14%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the summer in Las Vegas is gradually increasing, starting the season at 0.1 inches, when it rarely exceeds 0.3 inches or falls below -0.0 inches, and ending the season at 0.4 inches, when it rarely exceeds 1.1 inches.

The highest average 31-day accumulation is 0.5 inches on August 14. The lowest average 31-day accumulation is 0.1 inches on June 6.

Average Monthly Rainfall in the Summer in Las Vegas

Average Monthly Rainfall in the Summer in Las VegasJunJulAug0.0 in0.0 in0.2 in0.2 in0.4 in0.4 in0.6 in0.6 in0.8 in0.8 in1.0 in1.0 in1.2 in1.2 inSpringFallAug 140.5 inAug 140.5 inJun 60.1 inJun 60.1 inAug 310.4 inAug 310.4 inJul 10.2 inJul 10.2 inAug 10.5 inAug 10.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of the summer in Las Vegas, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 32 minutes, implying an average daily decrease of 1 minute, 0 seconds, and weekly decrease of 7 minutes, 2 seconds.

The shortest day of the summer is August 31, with 12 hours, 57 minutes of daylight and the longest day is June 20, with 14 hours, 37 minutes of daylight.

Hours of Daylight and Twilight in the Summer in Las Vegas

Hours of Daylight and Twilight in the Summer in Las VegasJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSpringFallJun 2014 hr, 37 minJun 2014 hr, 37 minnightnightdaydayAug 3112 hr, 57 minAug 3112 hr, 57 minAug 113 hr, 57 minAug 113 hr, 57 minNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the summer in Las Vegas is 5:22 AM on June 13 and the latest sunrise is 49 minutes later at 6:11 AM on August 31.

The latest sunset is 8:01 PM on June 28 and the earliest sunset is 53 minutes earlier at 7:08 PM on August 31.

Daylight saving time is observed in Las Vegas during 2024, but it neither starts nor ends during the summer, so the entire season is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:23 AM and sets 14 hours, 37 minutes later, at 8:01 PM, while on December 21, the shortest day of the year, it rises at 6:48 AM and sets 9 hours, 42 minutes later, at 4:29 PM.

Sunrise & Sunset with Twilight in the Summer in Las Vegas

Sunrise & Sunset with Twilight in the Summer in Las VegasJunJulAug2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSpringFall5:22 AM5:22 AMJun 137:58 PMJun 137:58 PM6:11 AM6:11 AMAug 317:08 PMAug 317:08 PM5:27 AM5:27 AMJul 18:01 PMJul 18:01 PM5:48 AM5:48 AMAug 17:45 PMAug 17:45 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the summer. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in the Summer in Las Vegas

Solar Elevation and Azimuth in the Summer in Las VegasJunJulAug12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSpringFall0010202030304050506060700010102030304040506070NowNow
northeastsouthwest
Solar elevation and azimuth in the the summer of 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for the summer of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in the Summer in Las Vegas

Moon Rise, Set & Phases in the Summer in Las VegasJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSpringFallMay 78:23 PMMay 78:23 PMMay 236:54 AMMay 236:54 AMJun 65:38 AMJun 65:38 AMJun 216:09 PMJun 216:09 PMJul 53:58 PMJul 53:58 PMJul 213:18 AMJul 213:18 AMAug 44:14 AMAug 44:14 AMAug 1911:26 AMAug 1911:26 AMSep 26:56 PMSep 26:56 PMSep 177:35 PMSep 177:35 PM5:10 AM5:10 AM7:32 PM7:32 PM7:21 PM7:21 PM5:13 AM5:13 AM5:07 AM5:07 AM8:45 PM8:45 PM8:21 PM8:21 PM5:38 AM5:38 AM8:26 PM8:26 PM7:57 PM7:57 PM5:38 AM5:38 AM8:17 PM8:17 PM7:12 PM7:12 PM5:44 AM5:44 AM7:11 PM7:11 PM6:42 PM6:42 PM7:02 AM7:02 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Las Vegas is gradually increasing during the summer, rising from 0% to 3% over the course of the season.

The highest chance of a muggy day during the summer is 4% on August 5.

For reference, on August 5, the muggiest day of the year, there are muggy conditions 4% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Summer in Las Vegas

Humidity Comfort Levels in the Summer in Las VegasJunJulAug0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SpringFallAug 54%Aug 54%Jun 10%Jun 10%Aug 313%Aug 313%Jul 11%Jul 11%humidhumiddrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Las Vegas is decreasing during the summer, decreasing from 8.9 miles per hour to 7.1 miles per hour over the course of the season.

For reference, on April 25, the windiest day of the year, the daily average wind speed is 9.2 miles per hour, while on August 27, the calmest day of the year, the daily average wind speed is 7.0 miles per hour.

The lowest daily average wind speed during the summer is 7.0 miles per hour on August 27.

Average Wind Speed in the Summer in Las Vegas

Average Wind Speed in the Summer in Las VegasJunJulAug0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphSpringFallAug 277.0 mphAug 277.0 mphJun 18.9 mphJun 18.9 mphJul 18.5 mphJul 18.5 mphAug 17.4 mphAug 17.4 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Las Vegas during the summer is predominantly out of the west from June 1 to June 15 and the south from June 15 to August 31.

Wind Direction in the Summer in Las Vegas

Wind Direction in the Summer in Las VegasWSNJunJulAug0%100%20%80%40%60%60%40%80%20%100%0%SpringFallNowNowwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Las Vegas typically lasts for 10 months (319 days), from around January 24 to around December 7, rarely starting after February 20, or ending before November 18.

The summer in Las Vegas is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in the Summer in Las Vegas

Time Spent in Various Temperature Bands and the Growing Season in the Summer in Las Vegasgrowing seasongrowing seasonJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFall100%Jul 17100%Jul 17NowNowcoolcomfortablewarmhotsweltering
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Las Vegas are very rapidly increasing during the summer, increasing by 3,046°F, from 1,897°F to 4,943°F, over the course of the season.

Growing Degree Days in the Summer in Las Vegas

Growing Degree Days in the Summer in Las VegasJunJulAug2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°F4,500°F4,500°F5,000°F5,000°FSpringFallJun 11,897°FJun 11,897°FAug 314,943°FAug 314,943°FJul 12,860°FJul 12,860°FAug 13,928°FAug 13,928°FNowNow
The average growing degree days accumulated over the course of the summer, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Las Vegas is rapidly decreasing during the summer, falling by 1.7 kWh, from 8.5 kWh to 6.8 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the summer is 8.7 kWh on June 17.

Average Daily Incident Shortwave Solar Energy in the Summer in Las Vegas

Average Daily Incident Shortwave Solar Energy in the Summer in Las VegasJunJulAug0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhSpringFallJun 178.7 kWhJun 178.7 kWhJun 18.5 kWhJun 18.5 kWhAug 316.8 kWhAug 316.8 kWhAug 17.6 kWhAug 17.6 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Las Vegas are 36.175 deg latitude, -115.137 deg longitude, and 1,998 ft elevation.

The topography within 2 miles of Las Vegas contains only modest variations in elevation, with a maximum elevation change of 272 feet and an average elevation above sea level of 1,954 feet. Within 10 miles contains only modest variations in elevation (2,415 feet). Within 50 miles contains large variations in elevation (11,234 feet).

The area within 2 miles of Las Vegas is covered by artificial surfaces (53%) and shrubs (47%), within 10 miles by shrubs (59%) and artificial surfaces (32%), and within 50 miles by shrubs (91%).

This report illustrates the typical weather in Las Vegas, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Las Vegas.

For each station, the records are corrected for the elevation difference between that station and Las Vegas according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Las Vegas is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Las Vegas and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Las Vegas and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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