Your July weather guide
HotWeather in Las Vegas in July
July is a good fit for Las Vegas only if you are comfortable planning your holiday around intense heat. Average daytime highs reach 39°C, nights stay around 26°C, and there are about 11 hours of sunshine daily. The dry weather makes rain a minor concern, but it does not make long spells outdoors comfortable. For a UK traveller, this is a month for short outdoor stretches and regular breaks somewhere cool, rather than leisurely daytime wandering.
Long-term climate averages for Las Vegas, not a forecast · 1991-2020
Las Vegas, month by month
Your snapshot
At a glance
The useful details for Las Vegas.
- Average daytime high
- 38.9°C
- 9 in 10 days stay below 42°C
- Average night-time low
- 26.3°C
- coldest 10% of nights: 23°C or lower
- Compared with London
- +17.1°C
- London averages 21.8°C in July
- Sunshine per day (est.)
- 11.0h
- 77% of 14.2 h of daylight
- Rainy days (1 mm+)
- 2
- 7 mm over the month
- Humidity
- 20%
- Days over 25°C
- 100%
- 99% over 30°C
- Record high 1991-2020
- 45.7°C
- 2017-07-07
- Record low 1991-2020
- 17.4°C
- 1997-07-01
- Flight from London
- ≈ 11 h 18 min
- 8424 km, long-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How July compares
July is the 1st warmest month of the year in Las Vegas and ranks 3rd of 134 destinations we compare for July - see where else is hot in July. Within United States it is 1st of 6 (United States in July). Against London's average high of 21.8°C in July, Las Vegas is 17.1°C warmer by day and 12.8°C warmer at night.
Daytime and night-time in July
The typical July day in Las Vegas peaks at 38.9°C, but that is an average: the warmest 10% of days reach 42.4°C or more. About 100% of days top 25°C and almost every pass 30°C. Nights average 26.3°C; one night in ten drops to 22.9°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest July day here reached 45.7°C (2017-07-07) and the coldest night 17.4°C (1997-07-01).
Rain in July
Dry (3 rainy days or fewer): about 2 days with 1 mm or more, 7 mm in total. Year to year it varies a lot - the wettest July was 2017 with 36 mm, the driest 1993 with 0 mm. Humidity averages 20%.
Sunshine and daylight
Around 11.0 hours of sunshine a day (estimated from cloud cover), 14.2 hours of daylight: the sun rises about 05:35 and sets about 19:58 local time in mid-July. Average cloud cover is 23%.
Is July a good time to visit Las Vegas?
It is a reasonable choice: hot days - though the heat can be intense at midday. The best months for Las Vegas on our scoring are May, October, April; months averaging 25°C or more: Apr, May, Jun, Jul, Aug, Sep, Oct.
The heat sets the pace
July is Las Vegas's warmest month, so treat the heat as the main consideration rather than a bonus. The warmest 10% of days reach 42.4°C or more, making prolonged outdoor plans a poor fit for this time of year. Put walking towards the cooler ends of the day and leave room for indoor breaks around midday. Pack loose, lightweight clothing, a hat and sunglasses, and keep drinking water regularly. Evenings are better suited to being outside, but an average night low of 26.3°C means you should not expect a refreshing chill after sunset. This month suits travellers happy to adapt their pace, not those who want to spend the whole day outdoors.
Plenty of sun, little rain
Rain is unlikely to be the deciding factor: July averages about 2 rainy days, leaving heat and sun exposure as the bigger practical concerns. Around 11 hours of sunshine within 14.2 hours of daylight gives you a long window for outdoor plans, but not all of it will feel comfortable. Humidity averages 20%, so the air is dry rather than muggy; that is no reason to ease up on water or sun protection. Keep outdoor plans flexible enough to retreat into the shade or indoors when needed. If that sounds too restrictive for a holiday, May, October and April are better overall choices here than July.
A little perspective
Las Vegas through the year
July is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|
| January | 13.8°C | 3.7°C | 5.8 | 22 | 4 | 0% |
| February | 16.1°C | 5.2°C | 6.2 | 29 | 5 | 1% |
| March | 20.6°C | 8.7°C | 7.3 | 16 | 3 | 21% |
| Aprilbest | 25.1°C | 12.2°C | 8.8 | 7 | 2 | 53% |
| Maybest | 30.3°C | 17.0°C | 10.0 | 5 | 1 | 85% |
| June | 36.1°C | 22.3°C | 12.1 | 2 | 0 | 98% |
| JulySelected | 38.9°C | 26.3°C | 11.0 | 7 | 2 | 100% |
| August | 37.9°C | 25.6°C | 10.7 | 9 | 2 | 100% |
| September | 33.6°C | 21.2°C | 10.3 | 7 | 1 | 98% |
| Octoberbest | 26.2°C | 14.6°C | 8.6 | 8 | 2 | 64% |
| November | 18.5°C | 8.1°C | 7.1 | 10 | 2 | 9% |
| December | 12.9°C | 3.5°C | 5.8 | 20 | 3 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in July
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
United Arab Emirates · 40°C by day · sea 33°C
Abu Dhabi
Egypt · 38°C by day · sea 28°C
Sharm El Sheikh
Morocco · 36°C by day
Marrakech
United Arab Emirates · 42°C by day · sea 33°C
Dubai
Spain · 35°C by day
Seville
A little more detail
Las Vegas in July FAQs
Plain answers, grounded in the averages.
Is Las Vegas hot in July?
Las Vegas is hot in July: the average daytime high is 38.9°C and nights average 26.3°C. About 100% of July days reach 25°C or more.
How much does it rain in Las Vegas in July?
Las Vegas sees about 2 rainy days (1 mm or more) and 7 mm of rain in a typical July. The wettest July between 1991 and 2020 was 2017 (36 mm) and the driest was 1993 (0 mm).
How sunny is Las Vegas in July?
Las Vegas gets around 11.0 hours of sunshine a day in July out of 14.2 hours of daylight (estimated from average cloud cover).
How does Las Vegas compare with the UK in July?
Las Vegas is on average 17.1°C warmer than London by day in July (38.9°C against 21.8°C).
What is the hottest July on record in Las Vegas?
Between 1991 and 2020 the hottest July day in Las Vegas reached 45.7°C on 2017-07-07, and the coldest night dropped to 17.4°C on 1997-07-01.
How much hotter is Las Vegas than London in July?
Las Vegas has an average daytime high of 38.9°C, compared with 21.8°C in London - a difference of 17.1°C. That is a substantial jump from a typical UK summer day, so plan for heat to limit your daytime walking.
Will I need warm clothes in the evening?
Warm outdoor layers are unlikely to be a priority, with average night lows of 26.3°C. Lightweight evening clothing makes more sense. A light layer may still be useful for cool indoor spaces, but outside you should expect warmth rather than crisp evenings.
Is July a good choice if I dislike very hot weather?
No - July is the warmest month in Las Vegas, and 99% of days reach 30°C. If very hot weather makes you uncomfortable, consider May, October or April instead: they are the better-rated months overall for a visit.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid), 1991-2020
Averages computed from daily values at Las Vegas. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C